Polyurethane elastomers containing allophanate-modified isocynates

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing a polyurethane elastomer, involving reaction of a reaction mixture via reaction injection moulding, where the reaction mixture contains: (A) a polyisocyanate component, (B) an isocyanate-reactive component, in the presence of (C) a catalyst composition and, if needed, (D) one or more ultraviolet stabilisers and, if needed, (E) one or more pigments, wherein the relative amount of (A) and (B) is such that the isocyanate index ranges from approximately 100 to approximately 120. Component (A) contains: (I) allophanate-modified polyisocyanate having content of NCO groups ranging from approximately 15 to approximately 35 wt %, and containing a reaction product: (1) (cyclo)aliphatic polyisocyanate having content of NCO groups ranging from approximately 25 to approximately 60 wt %, with (2) organic alcohol selected from a group comprising aliphatic alcohols containing 1-36 carbon atoms, cycloaliphatic alcohols containing 5-24 carbon atoms, and aromatic alcohols containing approximately 7-12 carbon atoms, in which the alcohol group is not bonded directly to the aromatic carbon atom; or (II) a prepolymer of allophanate-modified polyisocyanate, where the prepolymer has content of NCO groups from approximately 10 to approximately 35 wt %, and contains a reaction product: (1) allophanate-modified polyisocyanate having content of NCO groups from approximately 15 to approximately 35 wt %, which is a reaction product: (a) (cyclo)aliphatic polyisocyanate having content of NCO groups from approximately 25 to approximately 60 wt %, and (b) organic alcohol selected from a group comprising aliphatic alcohols containing 1-36 carbon atoms, cycloaliphatic alcohols containing 5-24 carbon atoms, and aromatic alcohols containing approximately 7-12 carbon atoms, in which the alcohol group is not bonded directly to the aromatic carbon atom; with (2) an isocyanate-reactive component having functionality from approximately 2 to approximately 6 and molecular weight from approximately 60 to approximately 4000. Component (B) contains: (1) from approximately 70 to approximately 90 wt % per 100 wt % (B) one or more polyetherpolyols with low saturation, having functionality from approximately 2 to approximately 8, molecular weight from approximately 2000 to approximately 8000 and containing a maximum of 0.01 meq/g unsaturation, (2) from approximately 10 to approximately 30 wt % per 100 wt % (B) one or more organic compounds having molecular weight from approximately 60 to approximately 150, having hydroxyl functionality of approximately 2 and not containing primary, secondary and/or tertiary amine groups, and (3) from approximately 0 to approximately 5 wt % per 100 wt % (B) one or more organic compounds having molecular weight from approximately 200 to approximately 500, having functionality from 3 to 4 and containing amine-initiated polyetherpolyol. The catalyst composition (C) contains: (1) one or more catalyst of formula: , where: m is a whole number from 3 to 8, and n is a whole number from 3 to 8, and (2) at least one tin-based catalyst. The invention also describes the polyurethane elastomer itself, containing the reaction product of the above-mentioned components.

EFFECT: improved hardening and simple catalysis without the need for a lead-based catalyst, as well as obtaining elastomers with better flexural modulus and better weather resistance.

18 cl, 2 ex, 2 tbl

 

Prior art inventions

The present invention relates to polyurethane elastomers which exhibit improved resistance to weathering, and the way they are received.

The production of polyurethane molded products using reactive injection molding (i.e., RIM) are well known and are described, for example, in U.S. patent 4,218,543. The process of reactive injection molding method includes filling out the form through which highly reactive liquid components are injected into shape within a very short time using high-performance metering device high pressure after they have been mixed in the so-called "positively controlled mixing heads".

In the production of polyurethane molded products by a process of reactive injection molding the reaction mixture usually contains component a, based on polyisocyanates, and-component, based on organic compounds containing isocyanate-reactive hydrogen atoms, and suitable extensions circuits, catalysts, paratory and other additives. The polyisocyanates which are suitable for industrial process reactive injection molding, are aromatic isocyanates, such as, for example, on phenylmethane-4,4'-diisocyanate (i.e. MDI). Although various patents widely open cycloaliphatic isocyanates in the long list of isocyanates, which are described as suitable for use in reactive injection molding, few patents contain any working examples that use cycloaliphatic isocyanate.

U.S. patent 4,772,639 describes a method for the production of polyurethane molded products by the reaction of organic polyisocyanates with organic compounds containing isocyanate-reactive hydrogen atoms, in the presence of catalysts and auxiliary agents in a closed form. Isocyanate component is based on (A1) mixtures of (i) 1-isocyanate-3,3,5-trimethyl-5-isocyanatomethyl (IPDI) and (ii) polyisocyanates, which contain groups obtained by trimerization part of the isocyanate groups of 1,6-diisocyanatohexane, or (A2) (i) of IPDI and (iii) polyisocyanates, which contain groups obtained by trimerization part of the isocyanate groups of a mixture of 1,6-diisocyanatohexane and IPDI. These reaction mixtures are widely disclosed as suitable for the technology of reactive injection molding.

U.S. patent 4,642,320 discloses a method of obtaining a molded polymer, providing a response within a closed form of the reaction mixture containing (a) a substance containing active hydrogen, containing the E. simple polyester with a primary or secondary amine terminal groups, having an average equivalent weight of at least 500, (b) at least one chain extension and (C) (cyclo)aliphatic polyisocyanate, polyisocyanate or their mixture, where the NCX index is from about 0.6 to 1.5. This method requires that the component (a) had at least 25% and preferably 50% of the active hydrogen atoms present in the form of amine hydrogens. All these examples illustrate the system, based on HDI (hexamethylenediisocyanate) prepolymer with a simple polyester with amine terminal groups and diethyltoluenediamine, high molding temperatures and long times demolding.

U.S. patent 4,764,543 discloses aliphatic system reactive injection molding, which use very fast reacting aliphatic polyamine. This patent is limited in General systems polyurea-based chain extenders, which are cycloaliphatic diamines, and polyesters are polyesters with amine terminal groups, with alifaticheskii related polyisocyanate.

System reactive injection molding is also disclosed in U.S. patent 4,269,945. These systems are based on compositions containing a polyisocyanate, a hydroxyl-containing polyol and a specific chain extension. Specific chain extension contains (1) at measures is one component, selected from the group consisting of (a) hydroxyl-containing substances, which essentially does not contain hydrogen atoms of aliphatic amine, and (b) aromatic aminecontaining substances containing at least two hydrogen atoms of the aromatic amine and essentially no hydrogen atoms of aliphatic amine; and (2) at least one compound containing an aliphatic amine having at least one primary amine group and an average functionality of hydrogen aliphatic amine from 2 to 16. And aromatic polyisocyanates, and (cyclo)aliphatic polyisocyanates are described as suitable for this method. All the working examples in this patent the use of aromatic isocyanates, which may be polymeric in nature.

U.S. patent 5,260,346 also discloses the reaction system to obtain elastomers through a process of reactive injection molding. These systems require allophanate-modified MDI, polyol containing hydroxyl groups, and aromatic polyamine, in which at least one of the ortho positions to the amine group substituted lower alkyl Deputy.

U.S. patent 5,502,147 describes systems reactive injection molding based on (cyclo)aliphatic isocyanates. These are (cyclo)aliphatic isocyanates have a viscosity less than 20,000 MPa·s PR is 25°C, NCO functionality of from 2.3 to 4.0 and modified, which groups, biuret groups, urethane groups, allophanate groups, carbodiimide groups, oxadiazine-trinovum groups, uretdione groups and mixtures thereof. In component contains high molecular weight polyol and low molecular weight chain extension, in which the ratio of OH:NH is from 1:1 to 25:1.

U.S. patent 5,502,150 discloses a method of reactive injection molding, which uses a prepolymer of hexamethylenediisocyanate having a functionality of less than 2.3, the NCO content of from 5 to 25% and a monomer content less than 2 wt.%. This prepolymer is reacted with the high molecular weight isocyanate-reactive compound, extender chain, selected from diols and aminoalcohols, and cross-linking compound based on hydroxyl containing not more than one hydrogen atom aliphatic amine.

Permanent polyurethanes also are disclosed in U.S. Patents 5,656,677 and 6,242,555. The polyurethanes according to the U.S. patent 5,656,677 contain the reaction product of (cyclo)aliphatic isocyanate with a compound containing isocyanate-reactive hydrogen atoms in the presence of chain extension and/or cross-linking agent and a specific catalyst system. The catalytic system contains 1) at least one organic compound of lead, 2) at least one organicscontaining bismuth and/or 3) at least one organic compound of tin. Permanent elastomers according to the U.S. patent 6,242,555 contain the reaction product (a) isophorondiisocyanate trimer/ monomer mixture having an NCO group content of from 24.5 to 34%, with B) isocyanate-reactive component in the presence of C) at least one catalyst selected from organic compounds of lead (II)organic compounds of bismuth (III) and organic compounds of tin (IV).

The method of obtaining the window gaskets from compositions of the polyurethane/ urea disclosed in U.S. patent 5,770,674. These compositions include the reaction product of (cyclo)aliphatic MDI, having an NCO functionality of from 2.0 to 4.0, with isocyanate-reactive component containing a relatively high molecular weight organic compound containing hydroxyl groups, amine groups or mixtures thereof, and low molecular weight by chain extension selected from diols, primary amines, secondary amines, aminoalcohols and mixtures thereof with a final composition having a density of stitching about 0.3 mol/kg

The advantages of the present invention include improved curing and simplified catalysis without the need for catalyst based on lead. In addition, the elastomers of the present invention demonstrate improved modulus of elasticity in bending. Also believe that these elastomers exhibit improved resistance to atmospheric hcpa is setiu.

Summary of invention

This invention relates to polyurethane elastomers and to the way they are received.

These polyurethane elastomers contain the reaction product of:

(A) A polyisocyanate component containing (I) allophanate-modified polyisocyanate having an NCO group content of from about 15 to about 35 wt.%, preferably from about 15 to about 25 wt.%, and containing the reaction product of:

(1) (cyclo)aliphatic polyisocyanate component having a content of NCO groups of from about 25 to about 60%, preferably from about 30 to about 50%, and

(2) organic alcohol selected from the group consisting of aliphatic alcohols containing from about 1 to about 36 carbon atoms, cycloaliphatic alcohols containing from about 5 to about 24 carbon atoms, and aromatic alcohols containing from about 7 to about 12 carbon atoms, in which the alcohol group is not attached directly to an aromatic carbon atom;

with

(B) isocyanate-reactive component containing:

(1) from about 70 to about 90 wt.% per 100 wt.% (C) one or more simple polyether polyols with low unsaturation, having a functionality of from about 2 to about 8 (preferably from 2 to 3), the molecular weight from about 2000 to about 8000, preferably from 4000 to 6000 and containing a maximum of 0.01, prefer the Ino a maximum of about to 0.007 mEq./g unsaturation;

(2) from about 10 to 30 wt.% per 100 wt.% (C) one or more organic compounds having a molecular weight of from about 62 to about 150, having a hydroxyl functionality of about 2 and does not contain primary, secondary and/or tertiary amine groups,

and

(3) from about 0 to about 5 wt.% (preferably up to 3%) per 100 wt.% (C) one or more organic compounds having a molecular weight of from about 200 to about 500, having a functionality of from 3 to 4 and containing amine-initiated simple polyetherpolyols;

in the presence of:

(C) one or more catalysts corresponding to the formula:

where

m is an integer from 3 to 8, preferably from 3 to 4;

and

n is an integer from 3 to 8, preferably from 3 to 5;

and if necessary

(D) one or more stabilizers,

and/or

(E) one or more pigments.

The relative amounts of components (a) and (b) are such that the isocyanate index of the obtained elastomer is in the range from about 100 to about 120, preferably from 105 to 110.

In an alternative embodiment of the present invention, allophanate-modified polyisocyanates can also react with the isocyanate-reactive component having a functionality of from about 2 to about 6 and the mole is warnow weight from about 60 to about 4000, with the formation of the prepolymer. The resulting prepolymers typically have a content of NCO groups of from about 10 to about 30 wt.%. These prepolymers allophanate modified (cyclo)aliphatic polyisocyanates can also be used as component (A) according to the present invention.

The method of obtaining these polyurethane elastomers involves the reaction of the reaction mixture by way of a reactive injection molding. This reaction mixture described above.

Detailed description of the invention

Suitable polyisocyanates for the present invention contain (I) at least one allophanate-modified (cyclo)aliphatic polyisocyanate. It is also possible that the polyisocyanates of the present invention contain a prepolymer these allophanate modified (cyclo)aliphatic polyisocyanates.

Suitable allophanate-modified polyisocyanates suitable for the present for the present invention typically have a content of NCO groups of from about 15 to about 35 wt.% and preferably from about 15 to about 25 wt.%. These allophanate-modified polyisocyanates contain the reaction product (1) (cyclo)aliphatic MDI, which has a content of NCO groups of from about 25 to about 60 wt.%, and (2) organic alcohol selected from the group consisting of aliphatic alcohols, cyclo is alifaticheskih alcohols and aromatic alcohols.

Suitable (cyclo)aliphatic polyisocyanates used as (1) upon receipt of allophanate-modified polyisocyanates (A)(1) of the present invention include, for example, 1,4-tetramethyldisilane, 1,6-hexamethylenediisocyanate, 2,2,4-trimethyl-1,6-hexamethylenediisocyanate, 1,12-dodecyltrimethoxysilane, cyclohexane-1,3 - and -1,4-diisocyanate, 1-isocyanato-2-isocyanatobenzene, 1-isocyanato-3-isocyanatomethyl-3,5,5-trimethylcyclohexane (i.e. isophorondiisocyanate or IPDI), bis-(4-isocyanatophenyl)methane, 2,4'-dicyclohexylmethane, 1,3 - and 1,4-bis-(isocyanatomethyl)cyclohexane, bis-(4-isocyanato-3-methylcyclo-hexyl)methane, α,α',α'-tetramethyl-1,3 - and/or -1,4-xylylenediisocyanate, 1-isocyanato-1-methyl-4(3)-isocyanatomethyl, dicyclohexylmethane-4,4'-diisocyanate, 2,4 - and/or 6-hexahydrotriazine and mixtures thereof. Preferably, the isocyanate contained 1,6-hexamethylenediisocyanate, dicyclohexylmethane-4,4'-diisocynate 1-isocyanate-3-isocyanatomethyl-3,5,5-trimethylcyclohexane.

Suitable organic alcohols include aliphatic alcohols, cycloaliphatic alcohols and aromatic alcohols in which the alcohol group is not bonded directly to the aromatic carbon atom. Aliphatic alcohols suitable for use as component (2) upon receipt of allophanate modified and is of iyanatul, include those alcohols which contain from 1 to about 36 carbon atoms and preferably from 1 to 8 carbon atoms. Suitable cycloaliphatic alcohols include alcohols which contain from about 5 to about 24 carbon atoms, and preferably from 6 to 10 carbon atoms. Suitable aromatic alcohols include alcohols that contain from about 7 to about 12 carbon atoms and preferably from 8 to 10 carbon atoms. In aromatic alcohols suitable for the present invention, the alcohol group is not attached directly to the aromatic carbon atom.

Some examples of suitable organic alcohols include, for example, aliphatic alcohols such as methanol, ethanol, propanol, isopropanol, n-butanol, Isobutanol, n-pentanol, 1-methylbutylamine alcohol, cetyl alcohol, 2-methoxyethanol, 2-bromoethanol etc.; cycloaliphatic alcohols such as cyclohexanol, Cyclopentanol, cycloheptanol, hydroxymethylcellulose etc.; and aromatic alcohols in which the alcohol group is not attached directly to an aromatic carbon atom, such as, for example, benzyl alcohol, 2-Phenoxyethanol, cinnamic alcohol, p-bromobenzoyl alcohol etc.

Allophanate-modified polyisocyanates of hexamethylenediisocyanate (HDI) typically have an NCO content of from 15 to 45% and preferably from 20 to 30 wt.%. Allof the at-modified polyisocyanates dicyclohexylcarbodiimide (rMDI) typically have an NCO content of from 15 to 35% and preferably from 20 to 30 wt.%. Allophanate-modified polyisocyanates of isophorondiisocyanate (IPDI) typically have an NCO content of from 15 to 35% and preferably from 20 to 30 wt.%.

Allophanate-modified polyisocyanates (cyclo)aliphatic, polyiso-tiantou, which are suitable for the present invention was prepared as follows. (Cyclo)aliphatic polyisocyanate is reacted with a suitable organic alcohol in the presence of allophanate catalyst at a temperature of from about 60 to about 120°C with the formation of allophanate-modified MDI. Suitable allophanate catalysts include, for example, zinc acetylacetonate, 2-ethylhexanoate zinc, cobalt naphthenate, pinoresinol lead, etc. Typically, these catalysts are neutralized or otherwise block against adversely affecting the subsequent reaction by adding a catalytic inhibitor (nuts). Suitable catalytic inhibitors include acidic substances, such as, for example, anhydrous hydrochloric acid, sulfuric acid, acid bis(2-ethylhexyl)phosphate, benzoyl chloride, acid Lewis etc. Inhibitor is usually added in a ratio of about 2 equivalents of acid inhibitor per mole allophanate catalyst.

In an alternative embodiment of the present invention, the prepolymers of these allophanate-modificirowan the x polyisocyanates, described above are also suitable for use as the polyisocyanate component. These prepolymers typically have a content of NCO groups of from about 10 to about 35%, preferably from about 12 to about 25 wt.%. The prepolymers typically have a functionality of at least 2. These prepolymers are also typically have a functionality of not more than 6. Obtaining the prepolymer allophanate-modified polyisocyanates of the present invention involves the reaction of these allophanate-modifitsirovannyh (cyclo)aliphatic polyisocyanates, as described above, with a suitable isocyanate-reactive compound, such as, for example, a simple polyetherpolyols, complex polyetherpolyols or a low molecular weight polyol, including diols and trioli. Isocyanate-reactive compounds suitable for the present invention typically have a molecular weight from about 60 to about 4000 and have a hydroxyl functionality of from about 2 to about 6.

In accordance with the present invention suitable isocyanate-reactive compounds for forming the prepolymers allophanate-modified polyisocyanates typically have a molecular weight of at least about 60, preferably at least about 75, more preferably at least about 100 and more preferably at least about 130. These isocyanate-reactive compounds typically the have molecular weight less than or equal to about 4000, preferably less than or equal to 1000, more preferably less than or equal to 400 and more preferably less than or equal to 200. Suitable here isocyanate-reactive compounds may have a molecular weight in the range between any combination of these upper and lower values, including, for example, from about 60 to about 4000, preferably from about 75 to about 1000, more preferably from about 100 to about 400 and most preferably from about 130 to about 200.

In accordance with the present invention suitable isocyanate-reactive compounds for forming the prepolymers allophanate-modified poly-isocyanates generally have a hydroxyl functionality of at least about 2, and typically less than or equal to 6, preferably less than or equal to 4 and more preferably less than or equal to 3. Suitable here isocyanate-reactive compounds may have a hydroxyl functionality in the range between any combination of these upper and lower values, including, for example, from about 2 to about 6, preferably from about 2 to about 4 and more preferably from about 2 to about 3.

Examples of suitable isocyanate-reactive compounds include simple poly-apically, complex polyether polyols, low molecular weight polyols, including diols, trioli etc. it is Obvious that the above pre the eeee molecular weight and functionality applicable to each of these groups of compounds. All these compounds known in polyurethane chemistry.

Suitable simple polyether polyols can be obtained by reaction of corresponding compounds which contain reactive hydrogen atoms with acceleratedly, such as, for example, ethylene oxide, propylene oxide, butylenes, styrene oxide, tetrahydrofuran, epichlorohydrin, and mixtures thereof. Suitable starting compound containing reactive hydrogen atoms include compounds such as, for example, ethylene glycol, propylene glycol, butyleneglycol, hexanediol, octanediol, neopentylglycol, cyclohexanedimethanol, 2-methyl-1,3-propandiol, 2,2,4-trimethyl-1,3-pentanediol, triethylene glycol, tetraethylene glycol, polyethylene glycol, dipropyleneglycol, polypropyleneglycol, dibutylamino, poliatilenglikol, glycerin, trimethylolpropane, pentaerythritol, water, methanol, ethanol, 1,2,6-hexanetriol, 1,2,4-butanetriol, trimethylacetyl, mannitol, sorbitol, methylglucoside, sucrose, phenol, resorcinol, hydroquinone, 1,1,1- or 1,1,2-Tris-(hydroxyphenyl)-ethane, etc.

Suitable complex polyether polyols such as the reaction products of polyhydric alcohols, preferably diatomic alcohols (optionally in the presence of trivalent alcohols with polyvalent, preferably divalent acids. Instead of using polycarboxylic acids in the free SOS is in nformation, you can also use the corresponding polycarboxylic anhydrides of the acids or the corresponding esters of polycarboxylic acids with lower alcohols or mixtures thereof to obtain polyesters. Polycarboxylic acids may be aliphatic, cycloaliphatic, aromatic and/or heterocyclic and may be unsaturated or saturated or substituted, e.g. by halogen atoms. Polycarboxylic acids and polyols used to obtain polyesters, known and described, for example, in U.S. patents 4,098,731 and 3,726,952 included here by reference in its entirety.

Suitable simple polythioether, Polyacetals, polycarbonates and other polyhydroxylated compounds are also disclosed in the above U.S. patents. Ultimately, representatives of many different compounds that can be used in accordance with the present invention, can be detected, for example, in High Polymers, volume XVI, "Polyurethanes, Chemistry and Technology" by Saunders-Frisch, Interscience Publishers, New York, London, volume I, 1962, pages 32 to 42 and 44-54, and volume II, 1964, p.5-6 and 198-199, and in Kunststoff-Handbuch, volume VII, Vieweg-Hochtlen, Carl Hanser Verlag, Munich, 1966, p.45-71.

Suitable low molecular weight polyols to obtain prepolymers include, for example, diols, triola, thetruly and their low molecular weight products alkoxysilane. They include 2-methyl-1,3-propandiol, ethylene glycol, 1,2 - and 1,3-propand the ol, 1,3-and 1,4 - and 2,3-butanediol, 1,6-hexanediol, 1,10-decanediol, diethylene glycol, triethylene glycol, tetraethylene glycol, dipropyleneglycol, tripropyleneglycol, glycerin, trimethylolpropane, neopentylglycol, cyclohexanedimethanol, 2,2,4-trimethylpentane-1,3-diol, pentaerythritol, etc. Products alkoxysilane these same compounds can also be used to obtain prepolymers. In accordance with the present invention, the preferred isocyanate-reactive compounds to form prepolymers are trimethylolpropane and tripropyleneglycol.

A preferred group of suitable here isocyanates include prepolymers of allophanate modified (cyclo)aliphatic polyisocyanates. These polyiso-cyanate get first education allophanate-modified (CEC-lo)aliphatic MDI as described above, and then the reaction allophanate-modified MDI with a suitable isocyanate-reactive compound with the formation of the prepolymer. This reaction is well known in polyurethane chemistry and can be carried out, for example, by heating the reactants to a temperature of from about 40 to about 150°C., preferably from about 50 to about 100°C, giving the desired prepolymer. It is obvious that you are using excessive amounts of allophanate-modified MDI with respect to Isola the at-jet connection.

Preferred allophanate-modified polyisocyanates in accordance with the present invention include selected from the group consisting of hexamethylenediisocyanate, isophoronediisocyanate and dicyclohexylthiourea. The resulting prepolymers allophanate-modified hexamethylenediisocyanate have a content of NCO groups of from about 12 to about 35, preferably from about 15 to about 25, and a functionality from about 2 to about 6 and preferably from about 2 to about 3. The resulting prepolymers allophanate-modified isophorondiisocyanate have a content of NCO groups of from about 10 to about 35, preferably from about 15 to about 25, and a functionality from about 2 to about 6 and preferably from about 2 to about 3. The resulting prepolymers allophanate-modified dicyclohexylthiourea have a content of NCO groups of from about 10 to about 35, preferably from about 15 to about 25, and a functionality from about 2 to about 6 and preferably from about 2 to about 3.

In accordance with the present invention remains of isocyanates, which may in fact lead to the production of some of the above isocyanates, is not suitable here for the isocyanate component. These residues are undesirable byproducts of the production process isocyanate component.

Suitable connections, IP is alzhemier as component (B)(1) in accordance with this invention include, for example, a simple polyether polyols with low unsaturation. Such simple polyether polyols with low unsaturation are known and described, for example, in U.S. patents 5,106,874, 5,576,382, 5,648,447, 5,670,601, 5,677,413, 5,728,745, 5,849,944 and 5,965,778, the description of which is included here by reference. Typically, these polyols have a molecular weight of at least about 2,000 and preferably at least about 4000. These polyols also typically have a molecular weight less than or equal to about 8000 and preferably less than or equal to about 6000. Simple polyether polyols with low unsaturation may have a molecular weight within any combination of these upper and lower limits, including, for example, from 2000 to 8000, preferably from 4000 to 6000.

Such simple polyether polyols also typically have a maximum unsaturation of not more than 0.01, and preferably not more to 0.007 mEq./was Such a simple polyether polyols with low unsaturation must be applied and must be received with the specified low level of unsaturation. This is usually done by the use of catalysts of the type DMC. Measured unsaturation should be not more than 0.01 mEq./g, preferably not more than 0,007 mEq./g for the component (B)(1). Unsaturation such simple polyether polyols is usually measured using the method of testing according to ASTM D-2849-69.

Thus, to the polyols, used as component (B)(1) in accordance with this invention, had a total unsaturation of less than 0.01 mEq./g, preferably less than to 0.007 mEq./year, they should be essentially monodisperse polyoxypropyleneamine the polyols which are preferably produced by polymerization of propylene oxide to the initiator molecule with appropriate functionality in the presence of a catalyst based on double metallocyanide complex, which can be obtained, as described in U.S. patent 5,470,813, the description of which is included here by reference. Suitable examples of the preparation of the catalyst and obtain a polyol presented in U.S. patent 5,470,813 and the included examples.

Suitable polyoxyalkylene polymers include poly(oxypropylene/oxyethylene) polyols with low unsaturation (low monoline), obtained with the use of double metallocyanide catalyst. Poly(oxypropylene/oxyethylene) polyols with low unsaturation described here are oxyalkylene suitable hydrogen-containing compound initiator with propylene oxide and ethylene oxide in the presence of double metallocyanide catalyst. Preferably use such catalysts based on double metallocyanide complex described in U.S. patents 5,158,922 and 5,470,813, a description to which x is included here by reference. Particularly preferred polyols include statistical poly(oxypropylene/oxyethylene) polyols with low unsaturation, which are described, for example, in U.S. patent 5,605,939, the description of which is included here by reference. The amount of ethylene oxide in a mixture of ethylene oxide/propylene oxide may be increased during the latter stages of polymerization to increase the content of primary hydroxyl in the polyol. Alternative polyol with a low unsaturation can be blocked with ethylene oxide using DMC catalysts. Of course, you must comply with the above within the content of ethylene oxide in the resulting simple polyether polyols.

If oxyalkylene carried out in the presence of double metallocyanide catalysts, it is preferable to avoid initiator molecules containing strongly basic groups such as primary and secondary amines. In addition, when using catalysts based on double metallocyanide complex, it is often desirable to oxyalkylated oligomer, which contains previously oxyalkylene "Monomeric" molecule of initiator. It was found, especially for neighboring hydroxyl groups that DMC oxyalkylene first passes slowly and may be preceded significant "introductory period", during which oxyalkylene almost no detected the application of the oligomer of polyoxyalkylene having a hydroxyl number greater than about 600, reduces this effect. Polyoxyalkylene oligomeric initiators can be obtained by oxyalkylation "Monomeric" initiator in the presence of conventional alkaline catalysts such as sodium hydroxide or potassium, or other DMC catalysts. Usually it is necessary to neutralize and/or remove such alkaline catalysts before adding and initiation of the DMC catalyst.

Simple polyether polyols used as component (B)(1) in accordance with this invention, is preferably produced by polymerization of propylene oxide or mixtures of propylene oxide and another alkalinized having not more than 2 carbon atoms, for example 1,2-butilenica, 2,3-butilenica, oxetane or tetrahydrofuran, in the molecule of the initiator with a suitable functionality, in the presence of a catalytically effective quantity of a suitable catalyst based on double metallocyanide complex, preferably a catalyst based on a complex hexacyanocobaltate-zinc/TBA. Also suitable for other methods of synthesis, which give low unsaturation of less than 0.01 mEq./g, preferably to 0.007 mEq./g or less. The term "polyoxypropylene polyol" and similar terms refer to the polyol, in which the main part of oxia Milanovich groups are oxypropylene group.

If the most minor amount of ethylene oxide or if another alkylenes, such as butylenes will copolymerized with propylene oxide statistics (hetero) method, two accelerated can simply be added simultaneously to the reactor under pressure. Unexpectedly, this process cannot, at present, be used to obtain the locked polyoxyethylene polyoxypropylene Homo - or random copolymers, but rather, ethylene oxide, which is desirable when the lock should be polymerized in the presence of alternative catalyst, preferably a hydroxide of an alkali metal.

The number of statistically copolymerizing of ethylene oxide must be the most insignificant, i.e. from 0 to about 1% or so, as the polyol as one frame has almost completely consist of polyoxypropylene or polyoxy-propylene, copolymerizing with another alkalization having more than two carbon atoms. Groups derived from ethylene oxide, may be present on the ends, if the mixture of polyols is used, as described here, or in the microporous elastomer, and in such cases, it is preferable that the mass percentage of these endings was from 3 wt.% to about 30 wt.%, preferably from 5 wt.% up to 25 wt.% and most preferably from about 10 wt.% to about 20 wt.% with respect to wt is e final polyol. To obtain elastomers with low water absorption, it is preferable that the total content of ethylene oxide in the polyol as external (locking), and minor internal oxyethylene fragments was less than 15 wt.%, more preferably less than 10 wt.%. Preferably used polyoxypropylene polyols, completely derived from propylene oxide.

Preferred compounds used as (B)(2) in accordance with this invention include compounds having a molecular weight of from about 62 to about 150, a hydroxyl functionality of about 2 and which do not contain primary, secondary and/or tertiary amine groups. Such compounds preferably have a molecular weight from about 62 to about 92,

Some examples of suitable compounds used as component (B)(2) in accordance with this invention, include compounds such as 2-methyl-1,3-propandiol, ethylene glycol, 1,2 - and 1,3-propandiol, 1,3 - and 1,4 - and 2,3-butanediol, 1,6-hexanediol, 1,10-decanediol, diethylene glycol, triethylene glycol, tetraethylene glycol, dipropyleneglycol, tripropyleneglycol, tetrapropenyl, cyclohexanedimethanol and 2,2,4-trimethylpentane-1,3-diol. Preferred diols include, for example, ethylene glycol and 1,4-butanediol.

Suitable for use as component (C)(3) in accordance with the laws the AI with this invention compounds include, for example, organic compounds having a molecular weight of from about 200 to about 500, an hydroxyl functionality of from about 3 to about 4 and containing amine-initiated simple polyether polyols. Initiated by the amine simple polyether polyols can be obtained by alkoxysilanes suitable amine initiators. Suitable alkalinity include ethylene oxide, propylene oxide, butylenes, styrene oxide, etc. ethylene oxide and propylene oxide are preferred acceleratedly. Suitable amine initiators for producing a component (C)(3) include, for example, compounds which contain from 1 to 3 amine groups and from 0 to 4 Oh groups, where the total number of functional groups is chosen so that the compound obtained had the functionality of from 3 to 4, as described above. Some examples of suitable amine initiators include compounds such as monoethanolamine, Ethylenediamine, Propylenediamine, 2-methyl-1,5-pentanediamine, 1,4-diaminobutane, ISOPHORONEDIAMINE, diaminocyclohexane, hexamethylenediamine were and so on

Amine initiators alkoxylated, preferably propoxylated, until the desired molecular weight, such as described above. The products obtained alkoxycarbonyl amino compounds contain only tertiary amine groups, which cannot interact with isocyanate gr is pami component (A). In addition, these products contain from 3 to 4 hydroxyl groups, which can interact with the isocyanate groups of the component (A). The preferred initiator is Ethylenediamine. Especially preferred compound used as component (C)(3), is propoxycarbonyl the Ethylenediamine having a molecular weight of about 360 and a hydroxyl functionality of about 4.

In accordance with this invention the sum of the wt.% components (C)(1), (C)(2) and (C)(3) is 100 wt.% component (B).

In accordance with this invention the interaction of the component (A) with component (B) occurs in the presence of (C) one or more catalysts corresponding to the formula:

where

m is an integer from 3 to 8, preferably from 3 to 4;

and

n is an integer from 3 to 8, preferably from 3 to 5.

Some examples of suitable catalysts, which correspond to the above formula include 1,8-diaza-7-bicyclo[5.4.0]undec-7-ene (i.e. DBU), 1,5-diazabicyclo[4.4.0]-Dec-5-ene (i.e. DBD), 1,5-diazabicyclo[4.3.0]non-5-ene (i.e. DBN), 1,8-diazabicyclo[7.5.0]tetradec-8-ene, 1,8-diazabicyclo-[7.4.0]tridec-8-ene, 1,8-diazabicyclo[7.3.0]dodec-8-Yong, etc.

According to the present invention the amount of catalyst corresponding to the above structure, there is such a way that it is is at least from about 0.1 to about 6.0 wt.%, preferably from about 0.5 to about 2.5% and more preferably from about 1 to about 1.5 wt.% per 100 wt.% component (B).

According to the present invention it is also possible that there could be other catalysts which are known to be suitable to obtain polyurethanes. Suitable catalysts include, for example, known carboxylates of metals, metal halide, ammonium carboxylates, catalysts based on tin-sulfur and tertiary amine catalysts. Suitable metals for these catalysts include, but are not limited to, tin, bismuth, lead, mercury, etc. of these catalysts preferred for use are the carboxylates of tin and/or tertiary amines in combination with the above-diazabicyclo" catalysts.

Suitable carboxylates of metals include tin carboxylates, such as, for example, dilaurate dimethylurea, dilaurate dibutylamine, di-2-ethylhexoic dibutylamine, maleate dibutylamine, and bismuth carboxylates, such as, for example, tridecanoate (trineodecanoate) bismuth. Some suitable examples of metal halides include, for example, halides of tin and, in particular, the chlorides of tin, such as, for example, dichloride dimethylurea and dichloride dibutylamine. Suitable examples of the ammonium carboxylates include, for example, trimethyl-hydroxyethyl one-2-ethylhexanoate (i.e. Dabco TMR). As previously mentioned, the tin carboxylates, such as, for example, dilaurate dimethylurea and dilaurate dibutylamine, are catalysts based on carboxylates of the metals used together with the above-described catalysts mentioned formula. Other suitable catalysts include catalysts based on tin-sulfur, such as, for example, dilapilated dialkylamino, such as, for example, dilauryl-cepted dibutylamine and dilapilated dimethylurea. Some examples of suitable tertiary amine catalysts include compounds such as, for example, triethylamine, triethylenediamine, tributylamine, N-methyl-morpholine, N-ethylmorpholine, triethanolamine, triisopropanolamine, N-methyldiethanolamine, N-ethyldiethanolamine and N,N-dimethylethanolamine.

In accordance with a preferred embodiment of the present invention, it is preferable to use the catalyst corresponds to the formula above, in combination with one or more catalysts based on tin carboxylate. Preferred carboxylates of tin contain dilaurate dimethylurea and/or dilaurate dibutylamine.

When a combination of two or more catalysts used in accordance with the preferred embodiment of the present invention, the total number of both catalysts, as is ravelo, must fall within the numerical values disclosed previously. In other words, the total number of all present catalysts should be such that it is at least from about 0.1 to about 6.0 wt.% all catalysts, preferably from about 0.5 to about 2.5 wt.%, more preferably from about 1 to about 1.5 wt.% all catalysts per 100 wt.% component (B). If the present invention is used, the preferred combination of amine catalyst having a structure corresponding to that described above, and a catalyst based on tin carboxylate, preferably an amine catalyst (above structure) is present in an amount of from 50 to 90 wt.%, and the catalyst based on tin carboxylate is present in an amount of from 10 to 50 wt.%, with the total wt.%, comprising 100 wt.% the catalytic component. In particular, it usually leads to amine catalyst corresponding to the formula comprising from 50 to 90 wt.% from 0.1 to 6.0 wt.% the total catalyst, and a catalyst based on tin carboxylate, comprising from about 10 to about 50 wt.% from 0.1 to 6.0 wt.% the total catalyst, the sum of the wt.% individual catalysts is 100 wt.% the catalysts.

Suitable stabilizers of the present invention include light stabilizers, which, as the site is planned, include any of the known compositions which are able to prevent significant yellowing of the elastomers of the present invention. When used here it can be assumed that light includes light stabilizers based on spatial-obstructed amines, absorbers of ultraviolet rays (UV) and/or antioxidants.

Some examples of light stabilizers based on spatial-obstructed amines include, but are not limited to, compounds such as, for example, obtained from fragments of 2,2,6,6-tetraammineplatinum, other types of spatial-obstructed amines, such as containing morpholine, piperazine, piperazinone, oxazolidine, imidazoline etc. Specific examples of suitable light stabilizers based on spatial-obstructed amines include compounds such as, but not limited to, bis(2,2,6,6-tetramethyl-4-piperidyl)sebacate, bis(1,2,2,6,6-pentamethyl-4-piperidyl)sebacate, 2-methyl-2-(2,2,6,6-tetramethyl-4-piperidyl)amino-N-(2,2,6,6-tetramethyl-4-piperidyl)propionamide, bis(1,2,2,6,6-pentamethyl-4-piperidyl)-2-(3,5-di-tert-butyl-4-hydroxybenzyl)-2-n-butylmalonate,tetrakis(2,2,6,6-tetramethyl-4-piperidyl)-1,2,3,4-butanetetracarboxylic, poly[{6-(1,1,3,3-TETRAMETHYLBUTYL)imino-1,3,5-triazine-2,4-diyl}-{2,2,6,6-tetramethyl-4-piperidyl)imino}hexamethylene{(2,2,6,6-tetramethyl-4-piperidin is)imino}],poly[(6-morpholino-1,3,5-triazine-2,4-diyl){(2,2,6,6-tetramethyl-4-piperidyl)imino}hexamethylene{(2,2,6,6-tetramethyl-4-piperidyl)imino}], polycondensate of dimethylsuccinic and 1-(2-hydroxyethyl)-4-hydroxy-2,2,6,6-tetramethylpiperidine, polycondensate N,N-bis(3-aminopropyl)Ethylenediamine and 2,4-bis [N-butyl-N-(1,2,2,6,6-pentamethyl-4-piperidyl)amino]-6-chloro-1,3,5-triazine, polycondensate 1,2,2,6,6-pentamethyl-4-piperidinol and 3,9-bis-(2-hydroxy-1,1-dimethylethyl)-2,4,8,10-tetraoxaspiro[5,5]undecane 1,2,3,4-butanetetracarboxylic acid and bis(1-actoxy-2,2,6,6-tetramethyl-4-piperidyl)sebacate.

The stabilizers on the basis of benzophenone include compounds such as, for example, 5,7-di-tert-butyl-3-(3,4-dimetilfenil)-3H-benzofuran-2-it, etc. Semicarbazide stabilizer includes, for example, 1,6-hexamethylenebis(N,N-dimethylaminomethyl), 4,4'-(methylenedi-p-phenylene)bis(N,N-diethylaminomethyl), 4,4'-(methylenedi-p-phenylene)bis(N,N-diethylaminomethyl),4,4'-(methylenedi-p-phenylene)bis(N,N-diisopropylaminomethyl), α,α-(p-xylylene)bis(N,N-dimethylaminomethyl), 1,4-cyclohexanebis(N,N-dimethylaminomethyl) etc.

Suitable ultraviolet (UV) stabilizers for the present invention include compounds such as, for example, 2-(3-tert-butyl-2-hydroxy-5-were)-5-chlorobenzotriazole, 2-(3,5-di-tert-butyl-2-hydroxyphenyl)benzotriazol, 2-(2-hydroxy-5-were)benzotriazol, 2-(2-hydroxy-5-tert-octylphenyl)benzotriazol, 2-(3,5-di-tert-amyl-2-hydroxyphenyl)benzotriazol, 2-[2-hydroxy-3,5-bis(α,α-dimethylbenzyl)phenyl]benzotriazole, hydroxy-4-acetoxybenzoic, 2-hydroxy-4-methoxybenzophenone, 2,4-di-tert-butylphenyl-3,5-di-tert-butyl-4-hydroxybenzoate, n-hexadecyl - 3,5-di-tert-butyl-4-hydroxybenzoate, ethyl-2-cyano-3,3-diphenylacetate, 2,4-dihydroxybenzophenone, 2,2',4,4'-tetrahydroxybenzophenone, 2-(2-hydroxy-4-acetoxyphenyl)benzotriazol, 2-[2-hydroxy-3,5-bis(α,α-dimethylbenzyl)phenyl]-2H-benzotriazol, 2-(3,5-di-tert-butyl-2-hydroxyphenyl)-5-chlorobenzotriazol, the condensate of methyl 3-[3-tert-butyl-5-(2H-benzotriazol-2-yl)-4-hydroxyphenyl]propionate and polyethylene glycol (molecular weight: about 300), hydroxyphenyl-benzotryazolyl derivative, 2-(4,6-diphenyl-1,3,5-triazine-2-yl)-5-hexyloxyphenol and 2-[4,6-bis(2,4-dimetilfenil)-1,3,5-triazine-2-yl]-5-octyloxyphenyl, etc. and mixtures thereof.

Some examples of suitable antioxidants which are applicable in the present invention include compounds such as n-octadecyl-3,5-di-tert-butyl-4-hydroxyhydrocinnamate; pointattributes(3,5-di-tert-butyl-4-hydroxyhydrocinnamate); di-n-octadecyl 3,5-di-tert-butyl-4-hydroxymethylphosphonate; 1,3,5-Tris(3,5-di-tert-butyl-4-hydroxybenzyl)-isocyanurate; 1,3,5-trimethyl-2,4,6-Tris(3,5-di-tert-butyl-4-hydroxybenzyl)-benzene; 3,6-dioxoanthracene(3-methyl-5-tert-butyl-4-hydroxyhydrocinnamate); 2,2'-ethylidene-bis(4,6-di-tert-butylphenol); 1,3,5-Tris(2,6-dimethyl-4-tert-butyl-3-hydroxybenzyl)isocyanurate; 1,1,3,-Tris(2-methyl-4-hydroxy-5-tert-butylphenyl)the utan; 1,3,5-Tris[2-(3,5-di-tert-butyl-4-hydroxyhydrocinnamate)ethyl]isocyanurate; 3,5-di-(3,5-di-tert-butyl-4-hydroxybenzyl)mesitol; 1-(3,5-di-tert-butyl-4-hydroxyanisole)for 3,5-di(octyl-thio)-s-triazine; N,N'-hexamethylene-bis(3,5-di-tert-butyl-4-hydroxyhydrocinnamate); ethylene bis[3,3-di(3-tert-butyl-4-hydroxyphenyl)butyrate]; bis(3,5-di-tert-butyl-4-hydroxyhydrocinnamate)hydrazide; N,N-di-(C12-C24alkyl)-N-methyl-amine oxides, etc. Other suitable compounds used as antioxidants include alkylated monophenol, such as, for example, 2,6-di-tert-butyl-4-METHYLPHENOL, 2-tert-butyl-4,6-dimethylphenol, 2,6-dicyclopentyl-4-METHYLPHENOL, 2,6-dioctadecyl-4-METHYLPHENOL, 2,4,6-tricyclohexyltin, 2,6-di-tert-butyl-4-methoxymethanol etc.; alkylated hydrochinone, such as, for example, 2,6-di-tert-butyl-4-methoxyphenol, 2,5-di-tert-butyl-hydroquinone, 2,5-di-tert-amyl-hydroquinone, 2,6-diphenyl-4-octadecylphenol etc.; gidroksilirovanii thio-diphenyl ethers, such as, for example, 2,2'-thio-bis(6-tert-butyl-4-methyl-phenol), 2,2'-thio-bis-(4-op), 4,4'-thio-bis(6-tert-butyl-2-methyl-phenol), etc.; alkalinebattery, such as, for example, 2,2'-methylene-bis(6-tert-butyl-4-METHYLPHENOL), 2,2'-methylene-bis-(4-methyl-6-cyclohexylphenol), 2,2'-methylene-bis-(6-nonyl-4-METHYLPHENOL), 2,2'-methylene-bis-[6-(α-methylbenzyl)-4-Nonylphenol], 2,2'-methylene-bis-[6-(α,α-dimethyl shall ensil)-4-Nonylphenol], 4,4'-methylene-bis(2,6-di-tert-butyl-phenol), 2,6-di-(3-tert-butyl-5-methyl-2-hydroxybenzyl)-4-METHYLPHENOL, 1,1,3-Tris(5-tert-butyl-4-hydroxy-2-were)butane, di-(3-tert-butyl-4-hydroxy-5-were)Dicyclopentadiene, di-[2-(3'-tert-butyl-2'-hydroxy-5'-methylbenzyl)-6-tert-butyl-4-ethylphenyl]terephthalate, etc.; benzyl compounds, such as, for example, 1,3,5-tri-(3,5-di-tert-butyl-4-hydroxybenzyl)-2,4,6-trimethylbenzene di-(3,5-di-tert-butyl-4-hydroxybenzyl)-sulfide, bis-(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)determinethat etc.; aceraminophen, such as, for example, anilide 4-hydroxylamino acid, anilide 4-hydroxystearate acid, 2,4-bis-artillerie-6-(3,5-tert-butyl-4-hydroxyanisole)-s-triazine and so on; amides of β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, such as, for example, N,N'-di-(3,5-di-tert-butyl-4-hydroxyphenylpropionic)hexamethylenediamine were etc.; diarylamino, such as, for example, diphenylamine, N-phenyl-1-naphtylamine, N-(4-tert-octylphenyl)-1-naphtylamine, etc.

Particularly preferred stabilizer is Tinuvin 765, known as bis(1,2,2,6,6-pentamethyl-4-piperidinyl)sebacate. Tinuvin 765 commercially available from Ciba Specialty Chemicals and is a mixture of a UV stabilizer, antioxidant and sitosterolemia based on the space-constrained Amin.

In accordance with the present invention may also attended the ü one or more pigments and/or dyes, including organic and inorganic compounds. Suitable inorganic pigments include, for example, oxide pigments such as iron oxides, titanium dioxide, oxides of titanium, oxides of Nickel, chromium and cobalt blue and zinc sulfide, ultramarine, sulfides of rare-earth metals, bismuth Vanadate, and carbon black as the pigment for the purposes of the present invention. Specific technical hydrocarbons are technical carbon from acid to alkaline, the received gas or furnace method, as well as technical carbon with a chemically modified surface, for example, sulfo or carboxyl-containing technical carbon. Suitable organic pigments include, for example, pigments, selected from moneysupermarket, diazapyrenium, Solakov, β-naftowych pigments, naphthol AS, benzimidazolone pigments, condensation diazapyrenium, metal complex azo pigments, pigments isoindolines and isoindoline series, and polycyclic pigments, for example, from phthalocyaninato, hinkreonsok, perimenopause, pernanbuco, thioindigo, antrahinonovye, dioxazine, chiropterologica and diketopiperazine (diketopyrrolopyrrole) series. Suitable pigments include solid solutions of the above-mentioned pigments, mixtures of the organic and/or inorganic pigments with organic and/or inorganic pigments, such as, for example, metal pigments coated with carbon black, mica pigments or pigments on the basis of talc, such as mica pigments coated with iron oxide by chemical vapour deposition (mica CVD-coated with iron oxide) and other compounds of the above-mentioned pigments. Other suitable pigments include lacquer dyes, such as CA, Mg and Al lucky sulfo and/or carboxyl-containing dyes. Also suitable are the pigments from the group of metal-complex azo pigments or their tautomeric forms, which are known. Other suitable pigments include, for example, pigments based on metal flakes, such as aluminum, zinc or magnesium. It is also possible that the metal flakes, in particular aluminum flakes would be a pop-up or newsplease.

Also suitable in accordance with this invention the pigments include those that are commercially available from Plasticolors Inc., sold as part of a series UVSolutions or sold as part of a series Colormatch DR. Pigments series UVSolutions, which are suitable in accordance with this invention include, for example, UVS 20519, UVS 20947, UVS 20883 and UVS 20571. Also suitable pigments series Colormatch DR, which are commercially available as DR 20845 and DR 20942. These pigments can contain one or more stabilizers known types in their composition is Oh, that avoids the need to use a separate regulator for Example, UVS 20519 is a combination of a pigment based on carbon black and butylbenzylphthalate with other additives and stabilisers. Pigment DR-20942 is a combination of carbon black and salts of phosphoric ester with other additives.

Suitable additives include surfactants, such as emulsifiers and foam stabilizers. Examples include N-stearyl-N',N'-bis-hydroxyethyl urea, realpolitical amide, stearyl diethanolamide, ISO-stearyl diethanolamide, polyoxyethyleneglycol monooleate, ester Penta-eritria/ adipic acid/ oleic acid, hydroxymethylimidazole derivative of oleic acid, N-steelproduction and sodium salts of castor oil sulfonates or of fatty acids. As surface-active additives can also be used alkali metal salts or ammonium salts of sulfonic acids, such as dodecylbenzenesulfonic acid or dinaftiletilena acid, and fatty acids.

Suitable foam stabilizers include water-soluble polyethylsiloxane. The structure of these compounds, as a rule, is such that the copolymer of ethylene oxide and propylene oxide attached to polydimethyl siloxane Radik the Lu. Such foam stabilizers are described, for example, in U.S. patent 2,764,565. In addition to the foam stabilizers and surface active agents, other additives that may be used in forming the compositions of the present invention include known porophore, including nitrogen, regulators of the cell, flame retardants, plasticizers, antioxidants, UV stabilizers, enhancers adhesion, fillers and reinforcing agents such as glass in the form of fibers or glass flakes or carbon fiber.

Molded articles according to the present invention is produced by reaction of the components in a closed form using the method of reactive injection molding. Compositions according to the present invention may be molded using standard processing methods when the isocyanate index in the range from about 100 to 120 (preferably from 105 to 110). The term "isocyanate index" (also commonly referred to as NCO index) here is defined as the equivalents of isocyanate, divided by the total number of equivalents of isocyanate-reactive hydrogen containing substances and multiplied by 100.

Typically, in the method of the reactive injection molding two separate flow directly mixed and then injected into a suitable form, although you can use more than two threads. The first stream contains poliisi antny component, while the second stream contains isocyanate-reactive components and any other supplements that you want to include.

The following additional examples illustrate the details of the production and use of the compositions of the present invention. This invention, which is set forth in the foregoing description is not limited either by volume or by entities such examples. Specialist in the art will readily understand that known variations of the conditions and processes of the following preparative procedures can be used to produce these compositions. Unless otherwise stated, all temperatures are given in degrees centigrade and all parts and percentages are by mass parts and mass percent, respectively.

Examples

Isocyanate a: allophanate based on IPDI and isobutyl alcohol, obtained by combining 15740 g (142 EQ.) IPDI with 971 (13 EQ.) Isobutanol. The resulting allophanate has 30,55% NCO. The prepolymer of allophanate receive Association 16720 g (103 EQ.) above allophanate with 1091 g (4.3 EQ.) of trimethylolpropane. The resulting prepolymer has an NCO group content of 25.9 wt.%.

Polyol A: a simple polyetherpolyols, having a nominal functionality of about 3, a molecular weight of about 6000, the number HE was about 28 and maximum unsaturation of about of 0.005 mEq /g This simple polyetherpolyols contains the reaction product of glycerol propyl what nexicom, with about 20% EA endings, and obtained in the presence of double metallocyanide catalyst.

Polyol B: cross-linking agent having a functionality of about 4, a molecular weight of about 350 and the number IT is about 630 and containing the product propoxycarbonyl Ethylenediamine.

Polyol C: initiated with glycerine

polyoxypropylene/polyoxyethylene simple polyetherpolyols having a functionality of about 2.7, the number HE was about 28 and a molecular weight of about 6000.

EG: ethylene glycol.

Catalyst a: dilaurate dimethylurea, commercially available as Fomrez UL-28 from GE Silicones.

The catalyst: the catalyst based on the tertiary amine, namely 1,8-diazabicyclo(5.4.0)undec-7-ene, which is commercially available as Polycat DBU from Air Products.

Surfactant And silicone surfactant, commercially available as Niax L-1000 from GE Silicones.

Pigment A: polyol as one of the dispersed particulate filler, commercially available as Colormatch DR-20845 from Plasticolors Corp.

Pigment: polyol as one of the dispersed particulate filler plus UV stabilizing additives, commercially available as Colormatch DR-20942 from Plasticolors Corp.

Pigment: disperse the particulate filler with the plasticizer and UV stabilizing additives, commercially available as Colormatch UVS-20519 from Plasticolors Inc.

UV stabilizer: combined ultraviolet article shall bristor, commercially available as Tinuvin 75 from Ciba Corp.

General method:

The components described above are used to obtain molded products of a reactive injection molding. The specific materials and quantities of these materials are listed below in Table 1.

The polyurethane-forming system of Examples 1-2 inject using a cylinder machine MiniRIM. Isocyanate-reactive materials and various additives are placed in In-part of the machine and the appropriate amount of isocyanate component is loaded into the a-part. MiniRIM equipped with a mixing head Hennecke mq8 Mixhead. In part pre-heated to 89°F and a-part is heated to 90°F. the Materials are injected at a pressure of 200 bar injection speed and injection of 400 g/C. the Material injected in the form of a flat plate 3×200×300 mm, heated to about 167°F. After 60 seconds exposure time the item is removed from the mold. The physical properties determined in accordance with ASTM standards. The following test methods ASTM used in the working examples of this application.

ASTM tests
PropertyA number of ASTM tests
The modulus of elasticity in bendingD 3489 (D 790 method I)
Solid is here on the shore NA
The shore hardness DHD2240
Tear resistanceD624
Tensile strength tensileD412
Elongation at break, %D412
The residual deformation under compressionD395

Table 1: Example 1 and 2
Example 1Example 2
Polyol And88
Polyol In88
Polyol With33
EH1212
The catalyst And0,50,5
The catalyst In1,01,0
Surface the surface-active substance And 1,01.0
Pigment And55

UV stabilizer33
Isocyanate And68,6668,66
Isocyanate index105105

Table 2: Properties of examples 1 and 2
Example 1Example 2
Density (lb/cubic ft)63,6555,75
The modulus of elasticity in bending (psi)40379687
Hardness shore a, with 18589
The shore hardness D with 12634
Tear resistance Die C (pli (pounds/linear inch)) 269290
Ultimate tensile strength (psi)10321309
Elongation (%)604488
The residual deformation under compression of 25% (%)8983

Although this invention is described in detail above for purposes of illustration, it should be clear that such details are given only for this purpose and that a specialist in the art can be made without leaving the nature and scope of this invention except for the restrictions imposed by the claims.

1. A method of obtaining a polyurethane elastomer comprising the interaction of the reaction mixture by way of a reactive injection molding, where the reaction mixture contains:
(A) a polyisocyanate component containing:
(I) allophanate-modified polyisocyanate having an NCO group content of from about 15 to about 35 wt.% and containing the reaction product of:
(1) (cyclo)aliphatic MDI, having a content of NCO groups of from about 25% to about 60% NCO
with
(2) organic alcohol selected from the group consisting of aliphatic alcohols containing from 1 to 36 carbon atoms, qi is alifaticheskih alcohols, containing from 5 to 24 carbon atoms, and aromatic alcohols containing from about 7 to about 12 carbon atoms, in which the alcohol group is not attached directly to an aromatic carbon atom;
or
(II) a prepolymer of allophanate-modified MDI, where the prepolymer has an NCO group content of from about 10 to about 35 wt.% contains reaction product:
(1) allophanate-modified MDI having an NCO group content of from about 15 to about 35 wt.%, which is the reaction product of:
(a) (cyclo)aliphatic MDI, having a content of NCO groups of from about 25% to about 60% NCO
and
(b) organic alcohol selected from the group consisting of aliphatic alcohols containing from 1 to 36 carbon atoms, cycloaliphatic alcohols containing from 5 to 24 carbon atoms, and aromatic alcohols containing from about 7 to about 12 carbon atoms, in which the alcohol group is not attached directly to an aromatic carbon atom;
with
(2) the isocyanate-reactive component having a functionality of from about 2 to about 6 and a molecular weight of from about 60 to about 4000; and
(B) isocyanate-reactive component containing:
(1) from about 70 to about 90 wt.% per 100 wt.% (C) one or more simple polyether polyols with low unsaturation, having a functionality of from about 2 to about 8, molecular weight of from about 2000 to about 8000 and containing a maximum of 0.01 mEq./g unsaturation;
(2) from about 10 to about 30 wt.% per 100 wt.% (C) one or more organic compounds having a molecular weight of from about 62 to about 150, having a hydroxyl functionality of about 2 and does not contain primary, secondary and/or tertiary amine groups,
and
(3) from about 0 to about 5 wt.% per 100 wt.% (C) one or more organic compounds having a molecular weight of from about 200 to about 500, having a functionality of from 3 to 4 and containing amine-initiated simple polyetherpolyols;
in the presence of:
(C) a catalytic composition comprising
(1) one or more catalysts corresponding to the formula:

where m is an integer from 3 to 8, and
n is an integer from 3 to 8,
and
(2) at least one catalyst based on tin; and, if necessary
(D) one or more UV stabilizers and, if necessary
(E) one or more pigments;
moreover, the relative amounts of (a) and (b) are such that the isocyanate index is in the range from about 100 to about 120.

2. The method according to claim 1 where the use of polyisocyanate component (A)containing a specified prepolymer (II).

3. The method according to claim 1, where the (cyclo)aliphatic polyisocyanate vybirayuthij group, consisting of 1-isocyanato-3-isocyanatomethyl-3,5,5-trimethylcyclohexane, dicyclohexylmethane-4,4'-diisocyanate and 1,6-hexamethylenediisocyanate.

4. The method of claim 2 where the (cyclo)aliphatic polyisocyanate is chosen from the group consisting of 1-isocyanato-3-isocyanatomethyl-3,5,5-trimethylcyclohexane, dicyclohexylmethane-4,4'-diisocyanate and 1,6-hexamethylenediisocyanate.

5. The method according to claim 1 where (B)(1) has a functionality of from about 2 to about 3 and a molecular weight of from about 4000 to about 6000.

6. The method according to claim 5, where (B)(1) contains not more than 0,007 mEq./g unsaturation.

7. The method according to claim 1 where (B)(2) has a molecular weight of from about 62 to about 92.

8. The method according to claim 1 where (B)(2) is selected from the group consisting of ethylene glycol and 1,4-butanediol.

9. The method according to claim 1 where (C) contains 1,8-diazabicyclo(5.4.0)undec-7-ene.

10. Polyurethane elastomer containing reaction product:
(A) a polyisocyanate component containing:
(I) allophanate-modified polyisocyanate having an NCO group content of from about 15 to about 35 wt.% and containing the reaction product of:
(1) (cyclo)aliphatic MDI, having a content of NCO groups of from about 25% to about 60% NCO
with
(2) organic alcohol selected from the group consisting of aliphatic alcohols containing from 1 to 36 carbon atoms, cycloaliphatic alcohols containing from 5 to 24 carbon atoms, and aromatic the ski alcohols, containing from about 7 to about 12 carbon atoms, in which the alcohol group is not attached directly to an aromatic carbon atom;
or
(II) a prepolymer of allophanate-modified MDI, where the prepolymer has an NCO group content of from about 10 to about 35 wt.% contains reaction product:
(1) allophanate-modified MDI having an NCO group content of from about 15 to about 35 wt.%, which is the reaction product of:
(a) (cyclo)aliphatic MDI, having a content of NCO groups of from about 25% to about 60% NCO
and
(b) organic alcohol selected from the group consisting of aliphatic alcohols containing from 1 to 36 carbon atoms, cycloaliphatic alcohols containing from 5 to 24 carbon atoms, and aromatic alcohols containing from about 7 to about 12 carbon atoms, in which the alcohol group is not attached directly to an aromatic carbon atom; with
(2) the isocyanate-reactive component having a functionality of from about 2 to about 6 and a molecular weight of from about 60 to about 4000;
(B) isocyanate-reactive component containing:
(1) from about 70 to about 90 wt.% per 100 wt.% (C) one or more simple polyether polyols with low unsaturation, having a functionality of from about 2 to about 8, a molecular weight of from about 2000 to about 8000 and content is asih a maximum of 0.01 mEq./g unsaturation;
(2) from about 10 to about 30 wt.% per 100 wt.% (C) one or more organic compounds having a molecular weight of from about 62 to about 150, having a hydroxyl functionality of about 2 and does not contain primary, secondary and/or tertiary amine groups,
and
(3) from about 0 to about 5 wt.% per 100 wt.% (C) one or more organic compounds having a molecular weight of from about 200 to about 500, having a functionality of from 3 to 4 and containing amine-initiated simple polyetherpolyols;
in the presence of:
(C) a catalytic composition comprising
(1) one or more catalysts corresponding to the formula:

where
m is an integer from 3 to 8,
and
n is an integer from 3 to 8,
and
(2) at least one catalyst based on tin; and, if necessary
(D) one or more UV stabilizers and, if necessary
(E) one or more pigments;
moreover, the relative amounts of (a) and (b) are such that the isocyanate index is in the range from about 100 to about 120.

11. The elastomer of claim 10, where the specified polyisocyanate component (A) contains the prepolymer (II).

12. The elastomer of claim 10, where the (cyclo)aliphatic polyisocyanate is selected from the group consisting of 1-isocyanato-3-isocyanatomethyl-3,5,5-trimethylcyclohexane, DICYCLOHEXYL Lotan-4,4'-diisocyanate and 1,6-hexamethylenediisocyanate.

13. The elastomer according to claim 11, where the (cyclo)aliphatic polyisocyanate is selected from the group consisting of 1-isocyanato-3-isocyanatomethyl-3,5,5-trimethylcyclohexane, dicyclohexylmethane-4,4'-diisocyanate and 1,6-hexamethylenediisocyanate.

14. The elastomer of claim 10, where (B)(1) has a functionality of from about 2 to about 3 and a molecular weight of from about 4000 to about 6000.

15. The elastomer at 14, where (B)(1) contains not more than 0,007 mEq./g unsaturation.

16. The elastomer of claim 10, where (B)(2) has a molecular weight of from about 62 to about 92.

17. The elastomer of claim 10, where (B)(2) is selected from the group consisting of ethylene glycol and 1,4-butanediol.

18. The elastomer of claim 10, where (C) contains 1,8-diazabicyclo(5.4.0)undec-7-ene.



 

Same patents:

FIELD: chemistry.

SUBSTANCE: polyisocyanate contains biuret groups, has functionality on isocyanate groups of not less than 4 and not more than 10 and is obtained using a method which includes (A) reaction of a polyisocyanate adduct with a secondary monoamine of formula (R1)(R2)NH, with the ratio of the isocyanate equivalent to the amine equivalent ranging from approximately 4:1 to approximately 14:1 to introduce biuret groups into said polyisocyanate, and (B) reaction of the polyisocyanate containing biuret groups with a blocking reagent. The polyisocyanate adduct (a) is obtained from 1,6-hexamethylenediisocyanate, (b) has average functionality on isocyanate groups of not less than 2.5 and not more than 8, and (c) contains isocyanurate groups. The blocking reagent is selected from a group comprising phenol, cresol, amides, oximes, hydrazones, pyrazoles and phenols which are substituted with long aliphatic chains.

EFFECT: obtaining blocked polyisocyanates which combine relatively low viscosity and low molecular weight with high functionality on isocyanate groups and high reactivity relative to binders used in coatings, as well as which are stable during storage with respect to increase in viscosity and are virtually colourless, which is especially important for systems which form transparent coatings.

9 cl, 6 ex, 5 tbl

FIELD: chemistry.

SUBSTANCE: polyurea and polythiourea contained in the disclosed compositions are obtained from a reaction mixture containing: a first component which contains isocyanate and isocyanate-functional polythioether-polyurethane and/or polythiourethane; and a second component containing an amine; from a reaction mixture which contains: a first component containing isocyanate; a second component containing amine and amine/hydroxy-functional polythioether; and from a reaction mixture containing a first component which contains isocyanate and isocyanate-functional polythioether-polyurethane and/or polythiourethane; and a second component containing amine and amine/hydroxy-functional polythioether, respectively.

EFFECT: obtaining compositions whose coatings applied on a substrate have significant longevity, avoid tackiness of the layer and dampen explosion pressure or ballistic impact on the substrate.

37 cl, 15 ex, 3 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to an elastomeric polyisocyanurate polyurethane material with 5-45% content of hard blocks, Shore hardness A 10-99 (DIN 53505) and elongation at fracture 5-1000% (DIN 53504), as well as a method of producing said material. Said material is obtained by reacting polyisocyanate with a component which is capable of reacting with isocyanate, where the reaction is carried out at isocyanate index ranging from 150 to 5000 and in the presence of a trimerisation catalyst. The polyisocyanate contains a) 80-100 wt % diphenylmethane diisocyanate which contains at least 40 wt % 4,4'-diphenylmethane diisocyanate and/or modified diphenylmethane diisocyanate which, at temperature 25°C, is a liquid and has NCO value of at least 20 wt % (polyisocyanate a), and b) 20-0 wt % of another polyisocyanate (polyisocyanate b), wherein the amount of polyisocyanate a) and polyisocyanate b) is calculated based on the total amount of polyisocyanate a) and polyisocyanate b). The component which is capable of reacting with isocyanate contains a) 80-100 wt % polyether polyol with average nominal functionality 2-6, average equivalent weight 1100-5000 and oxyethylene (EO) content 50-90 wt %, and b) 20-0 wt % of another one or more groups of compounds capable of reacting with isocyanate, where the amount of polyol a) and compound b) is calculated based on the total amount of polyol a) and compound b).

EFFECT: obtaining elastomeric materials with low modulus, high elongation at fracture, good thermal stability and resistance to inflammation, short setting time and good mould release properties.

7 cl, 2 ex, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to foamed polyurethane used in a wide range of articles, such as inner component parts of cars, structural polyurethane foam, floor covering and sports race tracks, as well as a production method thereof and a continuous method of producing alkoxylated hydroxylate of plant oil. The foamed polyurethane is a product of reaction of at least one polyisocyanate and at least one alkoxylated hydroxylate of plant oil containing from approximately 15 wt % to approximately 90 wt % alkoxylate relative the weight of the alkoxylated hydroxylate of plant oil, wherein alkoxylation is carried out in the presence of a catalyst based on a double metal cyanide (DMC) in amount of 0.0005-1 wt % relative the amount of a polyol derivative, optionally at least one polyol which is not based on plant oil, in the presence of at least one foaming agent and one catalyst different from the catalyst based on DMC, selected from a group comprising organotin and/or amine catalysts, optionally in the presence of at least one surfactant, pigments, fire retardants and filler materials.

EFFECT: foamed polyurethane produced using environmentally acceptable, renewable components, in particular alkoxylated hydroxylate of plant oil, which enables use of the foamed polyurethane in fields where there are high environmental requirements and/or high hydrophobic properties.

30 cl, 3 tbl

FIELD: chemistry.

SUBSTANCE: present invention relates to soft elastic foamed polyurethane with apparent density less than 15 kg/m3 and rigidity in compression less than 1.5 kPa. Said foamed polyurethane is obtained by reacting (a) toluene diisocyanate (TDI) with (b) a mixture of polyols containing (b1) 60-90 pts.wt of at least one polyetherpolyol with nominal functionality of 2-6, content of ethylene oxide links higher than 60 wt %, mainly primary hydroxyl groups and hydroxyl number of 10-112, and (b2) 10-40 pts.wt of at least one polyetherpolyol with nominal functionality 2-6, content of ethylene oxide links of 0-30 wt %, mainly secondary hydroxyl groups and hydroxyl number 8-112, (c) water, (d) carbon dioxide dissolved under pressure in amount of at least 6 pts.wt per 100 pts.wt of component (b), (e) structuring substances if needed, (f) when using silicon-based foam stabilisers, activators, metal catalysts and other auxiliary substances usually used to produce foamed polyurethanes, wherein the isocyanate index is equal 80-100.

EFFECT: obtaining soft elastic foamed polyurethane, having said values of apparent density and rigidity in compression, as well as excellent pore structure using a special mixture of polyols combined with water and carbon dioxide dissolved under pressure as a foaming agent.

5 cl, 3 ex, 1 tbl

FIELD: chemistry.

SUBSTANCE: present invention relates to foamed polyurethane which can be used in many fields with strict environmental safety requirements, where the percentage content of renewable resources and high tear resistance are required. Foamed polyurethane is a product of reaction of at least one polyisocyanate with a polyol component, in the presence of at least one foaming agent and at least one catalyst selected from a group comprising amine catalysts and organotin catalysts, if needed, in the presence of at least one surfactant, other cross-linking agents, chain extenders, pigments, flame retardants and filling materials. The polyol component contains a polymer-polyol (PMPO) selected from a group comprising styreneacrylonitrile (SAN) polymer-polyols, PHD polymer-polyols and PIPA polymer-polyols, at least 25 wt % of the weight of the polyol component of the vegetable oil hydroxylate with functionality between 1.5 and 6 and molecular weight between 300 and 10000, and 0-3 wt % of the weight of the polyol component of a polyatomic aliphatic alcohol with functionality between 3 and 8 and molecular weight less than 350, and if needed, a polyol not based on vegetable oil. The invention also describes a method of producing the foamed polyurethane described above.

EFFECT: obtaining foamed polyurethane, having considerably improved tear resistance, breaking strength and relative elongation.

27 cl, 22 ex, 3 tbl

FIELD: chemistry.

SUBSTANCE: present invention relates to a polyurethane dispersing resin, primarily having a polyurethane chain which contains hydrophilic groups of the side chain based on polyalkylene oxide, where groups of the side chain are covalently bonded to the polyurethane backbone chain, and where content of polyalkylene oxide in the polyurethane dispersing resin is at least 45 wt % and not more than 80 wt %. Polyurethane also contains hydrophobic groups on the side chain, which are covalently bonded to the polyurethane backbone chain. The invention also describes a coating composition containing said polyurethane dispersing resin, methods of preparing said composition and use of the polyurethane dispersing resin to prepare a composition for mixing with a pigment.

EFFECT: providing a polyurethane dispersing resin which enables to prepare concentrates of pigments, which can be easily included in a coating composition, in which pigments are stably dispersed, as well as possibility of obtaining pigment compositions with a wide range of pigments and obtaining dyes having excellent properties and stability, especially hard-to-disperse and stabilised pigments.

24 cl, 16 ex, 4 tbl

FIELD: chemistry.

SUBSTANCE: present invention relates to moulding rigid foamed polyurethane for use in household electric appliances, having ratio of the density of the moulded foamed polyurethane (kg/m3) to λ(10°c) (mW/m·K), measured 2 hours after obtaining the foamed polyurethane, between 1.65 and 2.15, as well as moulded density of 33-38 kg/m3. Given foamed polyurethane is obtained by injecting the reaction mixture into a closed mould with compacting factor of 1.03-1.9, where density of the mould at low pressure is between 300 and 950 mbar, and the reaction mixture contains: (A) organic polyisocyanate, (B) physical foaming agent, (C) polyol composition containing at least one polyol with functionality equal to or greater than 3 and hydroxyl number between 300 and 800, (D) water making up of 0-2.5 wt % of the overall polyol formulation, (E) catalyst and (F) auxiliary substances and/or additives.

EFFECT: optimisation of formulations of foamed polyurethanes to obtain rigid foamed polyurethane, having low heat conductivity at density 33-38 kg/m3 in stable conditions, as well as regulation of the time of filling the mould through process conditions, in order to optimise density distribution and aesthetic homogenisation of foamed polyurethane (fewer cavities) and shorter time for removing the obtained foamed polyurethane from the mould while minimising λ.

20 cl, 5 ex, 5 tbl

FIELD: chemistry.

SUBSTANCE: method involves reaction of polyisocyanate and a component capable of reacting with isocyanate, where the reaction takes place at isocyanate index between 1600 and 100000 and in the presence of a trimerisation catalyst, and where content of hard blocks is at least equal to 50%. The polyisocyanate contains a) 75-100 wt % diphenyl methane diisocyanate which contains at least 40 wt % 4,4'-diphenyl methane diisocyanate and/or a derivative of the said diphenyl methane diisocyanate, which is liquid at 25°C and has NCO value of at least 20 wt % (polyisocyanate a), and b) 25-0 wt % of another polyisocyanate (polyisocyanate b), where the amount of polyisocyanate a) and polyisocyanate b) is calculated based on total amount of that polyisocyanate a) and polyisocyanate b). The component capable of reacting with isocyanate contains a) 80-100 wt % polyether polyol having average nominal functionality of 2-6, average equivalent weight of 1100-5000 and oxyethylene content of 65-100 wt %, and b) 20-0 wt % of one or more groups of compounds capable of reacting with isocyanate, where the amount of polyol a) and compound b) is calculated based on total amount of that polyol a) and compound b).

EFFECT: obtaining materials with low residual concentration of NCO groups, having high modulus of elasticity, high impact strength, heat- and fire-resistance, low brittleness, short demoulding time and high cohesion strength.

6 cl, 3 ex

FIELD: chemistry.

SUBSTANCE: invention relates to polymeric polyols obtained from hydroxyl-containing materials, as well as dispersions of polymer particles in the said material. The polyol has a continuous polyol phase and dispersion ethylene-unsaturated polymer particles grafted on at least one stabiliser. The polyol phase contains at least one hydroxymethyl-containing polyester polyol derived from a fatty acid or a fatty acid ester. The polyol is a product of reaction between 9(10)-hydroxymethyl stearate or its alkyl ester and polyether polyol, containing ethylene oxide or propylene oxide links. The dispersion particles are a vinylaromatic polymer, nitirle with ethylene unsaturation or a mixture of two or more of them. The stabiliser is an addition compound of polyether polyol and vinylmethoxy silane or isocyanate with ethylene unsaturation.

EFFECT: invention enables to obtain stable polymeric polyols with low viscosity and high strength.

33 cl, 4 tbl, 12 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a solid polyurethane elastomer having low shrinkage, used in production of cast polyurethane articles via reaction injection moulding, as well as a method of producing said elastomer. Said elastomer contains a product of reaction (A) of polyisocyanate prepolymer containing 10-30% isocyanate groups and (B) a component which is reactive towards isocyanate in the presence of (C) one or more catalysts. Component (A) contains a product of reaction between polyisocyanate, having isocyanate functionality from approximately 2 to approximately 2.5, and a component which is reactive towards isocyanate, having molecular weight less than 1000 and hydroxyl functionality from approximately 2 to approximately 4. Component (B) contains the following (in wt %) per 100% total weight of (B)(1), (B)(2) and (B)(3): (1) from approximately 80 to approximately 90 of at least one component reactive towards isocyanate, having functionality from approximately 2 to approximately 3, hydroxyl number from approximately 28 to approximately 35, molecular weight from approximately 4000 to approximately 6000, and containing less than 15 wt % per 100% weight of alkylene oxide groups present in (B)(1), ethylene oxide, completely present as terminal groups, and in which the residue of alkylene oxide groups present in (B)(1) is propylene oxide groups: (2) from approximately 10 to approximately 20 chain extender, having functionality of approximately 2 and molecular weight from approximately 60 to less than approximately 250, where the chain extender is selected from a group consisting of ethylene glycol, 1,4-butane diol, diethylene glycol, triethylene glycol, dipropylene glycol, tripropylene glycol or mixtures thereof, and (3) from 2 to approximately 5 components reactive towards isocyanate, having hydroxyl functionality from approximately 3 to approximately 4, hydroxyl number from approximately 400 to approximately 850, molecular weight from approximately 200 to approximately 400, and containing a product of reaction of a compound, which contains at least two amine groups, with alkylene oxide. Components (A) and (B) react in a closed mould through reaction injection moulding with isocyanate index from approximately 70 to approximately 130.

EFFECT: method reduces shrinkage of solid elastomers without adding special additives, such as organic filling substances or acid additives.

10 cl, 5 tbl

FIELD: chemistry.

SUBSTANCE: polyurea and polythiourea contained in the disclosed compositions are obtained from a reaction mixture containing: a first component which contains isocyanate and isocyanate-functional polythioether-polyurethane and/or polythiourethane; and a second component containing an amine; from a reaction mixture which contains: a first component containing isocyanate; a second component containing amine and amine/hydroxy-functional polythioether; and from a reaction mixture containing a first component which contains isocyanate and isocyanate-functional polythioether-polyurethane and/or polythiourethane; and a second component containing amine and amine/hydroxy-functional polythioether, respectively.

EFFECT: obtaining compositions whose coatings applied on a substrate have significant longevity, avoid tackiness of the layer and dampen explosion pressure or ballistic impact on the substrate.

37 cl, 15 ex, 3 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to foamed polyurethane used in a wide range of articles, such as inner component parts of cars, structural polyurethane foam, floor covering and sports race tracks, as well as a production method thereof and a continuous method of producing alkoxylated hydroxylate of plant oil. The foamed polyurethane is a product of reaction of at least one polyisocyanate and at least one alkoxylated hydroxylate of plant oil containing from approximately 15 wt % to approximately 90 wt % alkoxylate relative the weight of the alkoxylated hydroxylate of plant oil, wherein alkoxylation is carried out in the presence of a catalyst based on a double metal cyanide (DMC) in amount of 0.0005-1 wt % relative the amount of a polyol derivative, optionally at least one polyol which is not based on plant oil, in the presence of at least one foaming agent and one catalyst different from the catalyst based on DMC, selected from a group comprising organotin and/or amine catalysts, optionally in the presence of at least one surfactant, pigments, fire retardants and filler materials.

EFFECT: foamed polyurethane produced using environmentally acceptable, renewable components, in particular alkoxylated hydroxylate of plant oil, which enables use of the foamed polyurethane in fields where there are high environmental requirements and/or high hydrophobic properties.

30 cl, 3 tbl

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of preparing an aqueous agent for applying coating, as well as an aqueous agent obtained using said method, and use thereof as binder in single-component (1K)-systems and a two-component (2K)-system, and for obtaining a coating on soaking substrates. The method involves the following: (I) polyurethane dispersion which is free from solvent and N-methylpyrrolidone is prepared, where the solvent free dispersion is a dispersion containing 0.9 wt % or less solvent, and the polyurethane dispersion (I) is simultaneously or separately mixed with (II) 1-7 wt % monohydroxyl-functional ethylene- or propyleneglycol ester, as well as (III) other lacquer additives. Wherein I.1) at the first step a NCO-prepolymer solution is obtained in a solvent with concentration of 66-98 wt %, where the solvent has boiling point lower than 100°C at nominal pressure, by reacting: (a) one or more polyisocyanates, (b) one or more polyols with average molecular weight Mn 500-6000, (c) one or more polyols with average molecular weight Mn 62-500, (d) one or more compounds containing a ion group or capable of forming an ion group and the NCO-prepolymer is free from a non-ionic hydrophilisising agent; I.2) at the second step the NCO-prepolymer I.1) is dispersed in water, where before, during or after dispersion, ion groups are at least partially neutralised; I.3) at the third step the chain is elongated by (e) one or more polyamines with average molecular weight Mn less than 500; and l.4) at the fourth step, the solvent is completely removed by distillation.

EFFECT: obtaining an aqueous agent for applying a coating, having improved film-forming properties, as well as obtaining coatings therefrom, having good chemical resistance and pendulum hardness higher than 75 seconds.

13 cl, 5 ex, 4 tbl

FIELD: chemistry.

SUBSTANCE: present invention relates to foamed polyurethane which can be used in many fields with strict environmental safety requirements, where the percentage content of renewable resources and high tear resistance are required. Foamed polyurethane is a product of reaction of at least one polyisocyanate with a polyol component, in the presence of at least one foaming agent and at least one catalyst selected from a group comprising amine catalysts and organotin catalysts, if needed, in the presence of at least one surfactant, other cross-linking agents, chain extenders, pigments, flame retardants and filling materials. The polyol component contains a polymer-polyol (PMPO) selected from a group comprising styreneacrylonitrile (SAN) polymer-polyols, PHD polymer-polyols and PIPA polymer-polyols, at least 25 wt % of the weight of the polyol component of the vegetable oil hydroxylate with functionality between 1.5 and 6 and molecular weight between 300 and 10000, and 0-3 wt % of the weight of the polyol component of a polyatomic aliphatic alcohol with functionality between 3 and 8 and molecular weight less than 350, and if needed, a polyol not based on vegetable oil. The invention also describes a method of producing the foamed polyurethane described above.

EFFECT: obtaining foamed polyurethane, having considerably improved tear resistance, breaking strength and relative elongation.

27 cl, 22 ex, 3 tbl

FIELD: chemistry.

SUBSTANCE: present invention relates to dispersions of polymer particles in a continuous aqueous phase, a method of preparing said dispersion and an adhesive composition, sealant or coating containing said dispersion. Dispersed particles in such a dispersion contain a polyurethane resin which is a product of a reaction between polyisocyanate, at least one curing agent and at least one material having equivalent mass from at least 400 up to 15000 and groups which react with isocyanate, where the said material contains at least one hydroxymethyl-containing polyester polyol. The hydroxymethyl-containing polyester polyol is a product of reaction between a fatty acid, having a hydroxymethyl group and containing 12-26 carbon atoms, or an ester of such a hydroxymethylated fatty acid and a polyol, hydroxylamine or polyamine initiator compound, having an average of at least 2.0 hydroxyl, primary amine and/or secondary amine groups/molecule, and having the following structure (I): [H-X](z-p)-R-[X-Z]p.

EFFECT: obtaining dispersions of polyurethane particles in aqueous phase, for which a considerable amount of starting raw materials used to produce polyuretane resin would have been obtained from renewable resources, as well as obtaining a coating, adhesive or sealant made from a composition containing such a dispersion, which exhibit good resistance to light and hydrolysis and have good physical and chemical properties.

20 cl, 6 ex, 2 tbl

FIELD: chemistry.

SUBSTANCE: present invention relates to a single-component primer composition for substrates made from glass and/or plastic, having setting time of at least 1 month. Said composition includes: a base primer composition including (a) an isocyanate functional prepolymer derived from the reaction of an aliphatic polyisocyanate and a polyol, and which is partially reacted with an amino group of a secondary aminosilane, wherein the aminosilane includes two or three methoxy groups bound to a silicon atom, two or three ethoxy groups bound to a silicon atom, or a combination thereof; (b) an isocyanate functional prepolymer with an isocyanate content greater than 1%, which is the reaction product of an aromatic polyisocyanate and a polyol of Mn>300; and (c) at least one solvent for the components (a) and (b); and an ingredient including an oxazolidine ring or derivative thereof; a second adduct (i) of an aromatic polyisocyanate and (ii) mercaptosilane, aminosilane or both; a film-forming polymer. The invention also describes glued structure having a glass or plastic panel, containing the said composition, a method of gluing the glass panel to the frame of a vehicle, comprising a step for applying said composition and a glued structure made using said method.

EFFECT: obtaining primer with long setting time, which exhibits excellent stability during storage, during application of which the surface does not swell.

13 cl, 4 tbl

FIELD: chemistry.

SUBSTANCE: present invention relates to moulding rigid foamed polyurethane for use in household electric appliances, having ratio of the density of the moulded foamed polyurethane (kg/m3) to λ(10°c) (mW/m·K), measured 2 hours after obtaining the foamed polyurethane, between 1.65 and 2.15, as well as moulded density of 33-38 kg/m3. Given foamed polyurethane is obtained by injecting the reaction mixture into a closed mould with compacting factor of 1.03-1.9, where density of the mould at low pressure is between 300 and 950 mbar, and the reaction mixture contains: (A) organic polyisocyanate, (B) physical foaming agent, (C) polyol composition containing at least one polyol with functionality equal to or greater than 3 and hydroxyl number between 300 and 800, (D) water making up of 0-2.5 wt % of the overall polyol formulation, (E) catalyst and (F) auxiliary substances and/or additives.

EFFECT: optimisation of formulations of foamed polyurethanes to obtain rigid foamed polyurethane, having low heat conductivity at density 33-38 kg/m3 in stable conditions, as well as regulation of the time of filling the mould through process conditions, in order to optimise density distribution and aesthetic homogenisation of foamed polyurethane (fewer cavities) and shorter time for removing the obtained foamed polyurethane from the mould while minimising λ.

20 cl, 5 ex, 5 tbl

FIELD: chemistry.

SUBSTANCE: method involves preparation of a reaction mixture containing at least one polyisocyanate, unsubstituted or inertly substituted alkyl ester of a fatty acid, having on average at least 0.8 hydroxymethyl groups per molecule and at least one polyol or polyamine compound, a catalyst and a foaming agent, and hardening the reaction mixture to form foamed polyurethane. The ester is an ester of a hydroxymethyl-containing fatty acid, having 12-26 carbon atoms and selected from esters having structures A1, A2, A3 of formulae and respectively.

EFFECT: obtaining foamed polyurethane having good physical and mechanical characteristics.

6 cl, 2 ex, 3 tbl

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