Composition for coats including compound containing alcohol-orthosilicate group

FIELD: compositions for coats.

SUBSTANCE: proposed composition includes heterocyclic silicon compound containing at least one alcohol-orthosilicate group and cross-linking agent interacting with hydroxylic groups. Proposed composition has low content of volatile organic solvents and is hardened at temperature of 5°C ; hardened composition contains no unreacted low-molecular blocking agents which are likely to evolve into surrounding atmosphere at hardening or during operation. Besides that, ratio of life to time to drying time is favorable. Proposed composition may be used for finishing and secondary finishing of automobiles and large transport facilities; it may be also used as an adhesive.

EFFECT: enhanced efficiency.

14 cl, 4 tbl

 

The invention relates to compositions for coating, comprising the heterocyclic compound of silicon and interact with hydroxyl groups of a crosslinking agent, to a method of curing the composition and use of the composition.

Such a composition is known from UK patent GB1208907. This publication describes two-component polyurethane composition containing a polyurethane prepolymer with residual isocyanate groups and pentacoordinated compound of silicon. The complex compound of silicon is charge and contains a cation formed by the amine as the counterion. When heated composition to 177°from complex compounds of silicon is allocated Amin and Amin causes curing of the prepolymer with isocyanate functional groups.

This song has several shortcomings. First, pentacoordinated complex silicon is a crystalline solid with low solubility in organic solvents and in the polyurethane prepolymer. Therefore, such compositions are not suitable for obtaining a composition for coating having a low content of volatile organic solvents that meet existing and future legislation for the protection of the environment. A second disadvantage of the composition disclosed in the patent In which the United Kingdom 1208907, is the temperature of curing 177°C. Such a high temperature curing unwanted way restricts the possible applications of the composition. Thus, the composition is not suitable for secondary finishing of vehicles, large vehicles, airplanes, or substrates that cannot withstand high temperature curing, for example of plastics or wood.

Thirdly, the complex compound of silicon merely serves as a blocking agent for the amine, which causes curing of the prepolymer with isocyanate functional groups. Thus, part pentacoordinated complex compounds of silicon remaining after the allocation Amin, will not form part of the formed cross-linked structure. Rather, it will remain immersed in the polymer matrix in the form of low molecular weight compounds. This will lead to a deterioration of the properties of cross-linked polymer and additionally increase the risk allocation of low molecular weight compounds in the environment during the curing process or operation.

The invention relates to compositions for coating the above-mentioned type, which is not associated with the aforementioned drawbacks.

Composition for coating of the present invention includes a compound containing at least one Spiro-orthosilicate group (the button on the text Spiro-orthosilicate will be abbreviated to be called SOS) and a crosslinking agent, interacting with hydroxyl groups.

It should be noted that a patent application DE Germany 19807504-A discloses a method for surface crosslinking super absorbent polymer particles, in which as cross-linking agents used are compounds containing SOS group. The crosslinking proceeds by the mechanism of transesterification at elevated temperatures, preferably at temperatures between 120°With up to 220°C. it is Reported that the stitched surface overabsorbed polymer particles have a high moisture absorption. In this publication, there is disclosed a composition for coating.

Containing SOS-group compounds are tetravalent silicon atom. Such compounds usually have a good solubility in organic solvents and mixed with cross-linking agents that interact with hydroxyl groups. In many cases containing SOS-group connections are low viscosity liquids. Therefore, the composition for coating of the present invention can be prepared in the form of a composition for coating having a low content of volatile organic solvents. In the scope of claims of the present invention also includes the preparation of a composition for coatings that do not contain volatile organic solvents.

Composition for coating of the present invention can be the ü solidified at a lower temperature, than the compositions disclosed in UK patent GB 1208907, for example, at such low temperatures as 5°C.

Composition for coating of the present invention is a composition containing hidden hydroxyl group. In the presence of water or moisture in the air SOS group will be either hydrolyzed with the formation of the alcoholic hydroxyl groups and silanol groups. It is established that, when interacting with the hydroxyl groups of a crosslinking agent, i.e. a compound containing at least two groups that interact with the hydroxyl groups present in the composition for coating, unlocked alcoholic hydroxyl group can interact with groups, relatively reactive hydroxyl groups, with the formation of cross-linked polymer. In addition, the formed silanol groups can participate in the reaction with a crosslinking agent that interacts with a hydroxyl group, or may interact with each other in the condensation reaction, or are involved in both processes. Thus, the cured composition for coating of the present invention essentially contains no unreacted low molecular weight blocking agents that could be released into the environment in the curing process or operation.

In addition, sleds is of stability containing SOS-group of compounds in the absence of moisture ratio viability:the drying time of the composition for coating according to the invention is particularly beneficial, as the hydrolysis SOS-groups takes place only in the presence of water or moisture. Of the coating film obtained from the composition for coating according to the invention also show high resistance at the car wash, i.e. resistance to damage and/or loss of gloss as a result of the processing at the car wash.

Containing SOS-group of compounds may be used as the main binder or as reactive diluents in compositions for coating of the present invention.

SOS-group can be represented by the following structural formula (I)

where X and Y may be the same or different and represent a residue of a linear or branched polyol. Preferably the polyol is a diol containing from 2 to 80 carbon atoms, preferably containing from 2 to 20 carbon atoms and most preferably containing from 2 to 10 carbon atoms. Suitable for use dialami are p,z - diols, where z p is an integer from 1 to 17. These p,z-diols can optionally contain one or more heteroatoms from the group of atoms including oxygen, nitrogen, sulfur and phosphorus, and/or one or more groups selected from the group comprising amide, thioamide, complex thioether, urethane, urea, sulfon, sulfoxy, simple, ether, esters and other unsaturated ol finavia group. p,z-diols may optionally be substituted by one or more groups selected from among groups such as epoxy, cyano, halogen, amine, tilina, hydroxyl, nitro, phosphorus, sulfoxy, amido, ether, complex ether, urea, urethane, sluinotify, tiamina, amide, carboxyl, carbonyl, aryl, acyl and olefin-unsaturated group.

In the scope of the present invention also includes that either X or Y, or both radical form part of the polymeric or oligomeric structure or contain contact data.

Real connection with SOS groups are known as such and can be obtained in several ways.

One such way is the reaction of the diol with a suitable derivative of silicon, such as tetrachlorosilane or tetravalent silicon. Such reactions are described C.L.Frye in the Journal of Organic Chemistry 34 (1968), pp. 2496-2499. Suitable for use diols for this reaction are those described above.

An alternative way of obtaining containing SOS-group of compounds described Wongkasemijt et al., in Tetrahedron, 57 (2001), pp. 3997-4003. This publication describes the direct synthesis containing SOS connections of colloidal silicon dioxide and 1,2-diols or 1,3-diols.

Compounds containing SOS-group, where X and Y represent the remains of p,z-diols, where z-p are in the range from 1 to 14, are preferred over predpochtitelno z-p are in the range from 1 to 5. Examples of such preferred p,z-diols are diols, in which z-p is 1, such as ethylene glycol, 1,2-propandiol, 1,2-butanediol, 2,3-butanediol, 1,2-hexanediol, 2,3-dimethyl-2,3-butanediol (pinacol); p-z-diols, in which z-p is equal to 2, such as 1,3-propandiol, 2-butyl-2-ethyl-1,3-propandiol, 2-ethyl-1,3-hexanediol and 2,2-dimethyl-1,3-propandiol; and p-z-diols, in which z-p is equal to 3, such as 2,5-hexanediol, simple trimethylolpropane Monogatari 2-methyl-1,4-pentanediol and simple diesters of pentaerythritol.

Also suitable for use are trimethylolpropane, pentaerythritol and simple monetary pentaerythritol.

In an additional preferred embodiment of the invention containing SOS-group of compounds X and Y are equal. Particularly preferably, when X and Y are selected from residues of 2-butyl-2-ethyl-1,3-propandiol, 2-ethyl-1,3-hexanediol and simple monoallelic ether of trimethylolpropane. These preferred containing SOS-group of compounds have the structures shown by the formulas Ia, Ib and Ic, respectively.

Different Regio - and stereoisomers of the structures represented by formulas Ia, Ib and Ic, shall be considered as included in the formula.

Composition for coating according to the present invention includes a crosslinking agent that interacts with hydroxyl groups, containing at least the ve groups, interacting with hydroxyl groups. Examples of suitable compounds that interact with hydroxyl groups, are isocyanates, thioisocyanate, epoxides, amisulpride, acetals, carboxylic acids, anhydrides of carboxylic acids, esters of carboxylic acids, carbodiimide, alkoxysilane group acceptor group Michael and esterified amine groups. In addition, also includes mixtures of the mentioned groups.

Examples of compounds containing at least two isocyanate groups are aliphatic, alicyclic and aromatic polyisocyanates, such as trimethylenediamine, 1,2-propylenediene, tetramethyldisilane, 2,3-butylenediamine, hexamethylenediisocyanate, octamethyltrisiloxane, 2,4-trimethylhexamethylenediamine, 2,4,4-trimethylhexamethylenediamine, dodecyltrimethoxysilane, α,α'-dipropionyl simple ether diisocyanate, 1,3-cyclopentanedione, 1,2-cyclohexanedimethanol, 1,4-cyclohexanedimethanol, 4-methyl-1,3-cyclohexanedimethanol, 4,4'-dicyclohexylmethane, 3,3'-dimethyl-4,4'-dicyclohexylthiourea, m - and p-delete the entry, 1,3 - and 1,4-bis(isocyanatomethyl)benzene, 1,5-dimethyl-2,4-bis(isocyanatomethyl)benzene, 1,3,5-triisocyanate, 2,4 - and 2,6-colorvision, 2,4,6-colortransparent, α,α,α,'α'-those whom rameter, m - and p-xylylenediisocyanate, 4,4'-diphenyldiisocyanate, 4,4'-diphenyldiisocyanate, 3,3'-dichloro-4,4'-diphenyldiisocyanate, naphthalen-1,5-diisocyanate, isophoronediisocyanate, 3-isocyanatomethyl-1-methyl-1-socialecological, disinclination, 4-isocyanatomethyl-1,8-octadienal and transdenominational and mixtures of the aforementioned polyisocyanates.

In addition, such compounds may include adducts of polyisocyanates, such as biuret, isocyanurate, allophanate, uretdione and mixtures thereof. Examples of such adducts are isocyanurate of hexamethylenediisocyanate available from the company Rhodia under the trade name Tolonate® HDT, uretdione of hexamethylenediisocyanate, available from Bayer under the trade name Desmodur® N3400, allophanate of hexamethylenediisocyanate, available from Bayer under the trade name Desmodur® LS 2101, and isocyanurate isophorondiisocyanate available from the company Degussa under the trade name Vestanat® T1890. Other examples of suitable adducts are the adduct of two molecules of hexamethylenediisocyanate or isophorondiisocyanate with diola, such as ethylene glycol, the adduct of 3 molecules of hexamethylenediisocyanate with 1 molecule of water, the adduct of 1-th molecule of trimethylolpropane with 3 molecules of isophorondiisocyanate and adduct 1 molecule of pentaerythritol to 4 molecules colordistance.

In addition, K is included for use are (co)polymers based on monomers with functional isocyanate groups, such as α,α'-dimethyl-m-isopropylbenzenesulfonyl or 2-isocyanatoacetate. In conclusion, the above isocyanates and adducts based on them may be present in the form of blocked isocyanates, what is known specialists in this field.

Examples of compounds containing at least two epoxy groups, are solid or liquid epoxysilane, such as a simple di - or polyglycidyl esters of aliphatic, cycloaliphatic or aromatic hydroxyl compounds, such as ethylene glycol, glycerin, cyclohexanediol, menagerie di - or polyvalent phenols, bisphenol, such as Bisphenol-a and Bisphenol-F, and multi-core di - or polyvalent phenols; simple polyglycidyl ethers of phenol novolacs; epoxydecane the divinylbenzene; epoxydecane compounds which contain groups; epoxydecane polyalkylene, such as epoxydecane polybutadiene; gigantomania epoxydecane resin; resin epoxydecane received by epoxydecane aliphatic and/or cycloaliphatic alkenes, such as depotentiated, Dicyclopentadiene and vinylcyclohexane; and containing glycidyloxy group resins, such as polyesters or polyurethanes containing two or more glycidyloxy groups in the molecule; the Lee of a mixture of the above-mentioned epoxy compounds. It is preferable to use the above-mentioned cycloaliphatic compounds containing two or more epoxy groups.

Alternatively, use the (co)polymer of ethylene-unsaturated compounds containing epoxy groups, such as glycidyl(meth)acrylate, N-glycidyl(meth)acrylamide and/or simple allylglycidyl ether, and optionally, one or more copolymerizing, ethylene-unsaturated monomers.

Examples of compounds containing at least two acetylene groups are disclosed, for example, in patent publications as U.S. patent 4788288, U.S. patent 4864055, U.S. patent 5155170, U.S. patent 5336807 and WO 03/074620. Other usable compounds with acetylene functional groups include compounds obtained by the reaction of aminobutyraldehyde di(m)ethylacetate (ABDA) and (co)oligomers or (co)polymers containing carboxaldehyde, isocyanate or cyclocarbonate functional groups, such as complex polyester, polyacrylate and polyurethane. An example of such a polymer is a copolymer of glyceryltrinitrate-butyl acrylate and styrene. Additionally, there may be used a mixture of compounds containing at least two acetylene group.

Examples of compounds containing at least two carboxyl groups include the group of saturated or unsaturated Alif the political, cycloaliphatic and aromatic polycarboxylic acids such as malonic acid, succinic acid, adipic acid, azelaic acid, sabotinova acid, decanedicarbonitrile acid, dimer fatty acid, maleic acid, tetrahydrophtalic acid, hexahydrophthalic acid, hexahydronaphthalen tetrahydrophtalic acid, phthalic acid, isophthalic acid, terephthalic acid, trimellitic acid, pyromellitic acid, 3,6-dichloroflua acid, tetrachlorophthalic acid and mixtures thereof.

Examples of compounds with functional groups, anhydrides of carboxylic acids include additive polymers based on Monomeric unsaturated cyclic anhydrides, such as maleic anhydride, taconova anhydride or Tarakanova anhydride. Additionally, there may be used copolymers of the indicated Monomeric anhydrides and one or more ethylene - unsaturated monomers. The above copolymers can contain 10-50 wt.% anhydrite groups.

Examples of the ethylene-unsaturated monomers are styrene, substituted styrene, vinyl chloride, vinyl acetate and esters of acrylic and methacrylic acid such as methyl(meth)acrylate, ethyl(meth)acrylate, propyl(meth)acrylate, isopropyl(meth)acrylate, butyl(meth)acrylate, t-butyl(meth)acrylate, n-hexyl(meth)acrylate, 2-ethylhexyl(meth)is kilat, cyclohexyl(meth)acrylate, 2,2,5-trimethylcyclohexyl(meth)acrylate and isobornyl(meth)acrylate. (Co)polymers with anhydrite functional groups can contain small amounts, for example from 1 to 10 wt.%, groups of the ethylene-unsaturated carboxylic acids such as (meth)acrylic acid. Molecular weight (co)polymers with anhydrite functional groups is preferably 1000-50000.

When the composition according to the present invention is used as a composition for top coating, the above-mentioned ethylene-unsaturated monomer is preferably used in a molar ratio of 1:1 with Monomeric anhydride as described in U.S. patent 4798745.

In an alternative embodiment of the connection with the functional anhydrite groups of carboxylic acids can be adduct Monomeric anhydride and a polymer containing functional groups. Examples of such adducts are the adduct of polybutadiene or a copolymer of butadiene/styrene with maleic anhydride; the adduct of maleic anhydride and a styrene/allyl alcohol, esterified unsaturated fatty acid, resin terpene and maleic anhydride; adducts of hydroxyl-containing polymers and Monomeric anhydrides, such as copolymers of hydroxyethyl(meth)acrylate or styrene/allyl alcohol and tricarboxylic compound capable of clicks is its anhydrous group, such as those described in EP-A-0025917; adduct trimellitic anhydride with a polyol, such as described in EP-A-0134691; and adduct polymer containing tirinya groups, unsaturated cyclic anhydride, such as maleic anhydride, itacademy anhydride or citraconic anhydride. Additionally, there may be used a mixture of compounds with anhydrous functional groups.

Suitable for using compounds with ester groups on the basis of carboxylic acids known to specialists in this field. Examples include additive (co)polymers of esters of (meth)acrylic acid and esters, at least difunctional carboxylic acids, such as dimer fatty acids. Preferably, esters of lower alilovic alcohols were used as cross-linking agent that interacts with hydroxyl groups.

Compounds and resins with alkoxysilane groups suitable for use as cross-linking agent that interacts with hydroxyl groups in the composition according to the invention, is well known to specialists in this field. Examples of them are described in WO 98/23691. Additional examples of compounds with alkoxysilane functional groups are alkoxysilane following structural formula:

the de T represents a hydrolyzable group, such as-OCH3, -OC2H5, -OCH(CH3)2or-OC2H4OCH3,and

R1and R2represent a reactive group, which may be the same or different. Examples of such reactive groups include vinyl, aminoalkyl, thioalkyl, amoxiciline and methacryloxyethyl group. Additionally, there may be used the products of interaction of compounds with alkoxysilane functional groups, a mixture of compounds with alkoxysilane functional groups and/or products of their interaction.

Examples of alkoxysilanes with the vinyl functional groups include vinyltriethoxysilane and VINYLTRIMETHOXYSILANE. As an example of the product of the interaction of alkoxysilane with functional vinyl groups may be mentioned silicone resin formed by the reaction of CH2=CH-Si(T)3and styrene.

The interaction products alkoxysilanes with amine functional groups can be obtained by the reaction of such silanes with esters of carboxylic acids R3(COOR4)nwhere n is an integer of at least 1, R3is a linear or branched, optionally unsaturated, hydrocarbon group, and R4represents a lower alkyl group, for example the 1-4alkyl group, for example:

For example, the adduct of 1 mol of diethylmalonate and 2 mol 3-aminopropyltrimethoxysilane is suitable for use alkoxysilanes connection. Also suitable for use are the products of interaction amidofunctional of alkoxysilanes with compounds containing isocyanate functional groups.

One of the examples of products of interaction amoxilonline silane compound is the product of interaction β-(3,4-epoxycyclohexyl)ethyltrimethoxysilane with amines, acids and alcohols.

Examples of products of interaction methacryloxypropyltrimethoxysilane are products of interaction γ-methacryloxypropyltrimethoxysilane and γ-methacryloxypropyl(β-methoxyethoxy)silane with winhelponline monomers such as styrene and methyl methacrylate.

Connection with acceptor groups Michael, suitable for use as cross-linking agent that interacts with hydroxyl groups include any of the compounds containing two or more olefin-unsaturated groups, olefin-unsaturated groups containing at least one electron-withdrawing functional group, bonded to the carbon atom in the unsaturated St is zi, as described in the publication WO 00/64959 included in this description by reference.

Suitable for use compounds containing etherified amino groups, typically well known to the experts. Examples are urea resin, guanamines resins and melamine resins, and mixtures thereof. Examples of the urea resin is esterified with metrolotion, mutilation and isobutylamine. One example guanamines resin is Tetra(methoxymethyl)benzoguanamine. Examples of melamine resins are hexa(methoxymethyl)melamine (HMMM) and isobutylamine melamine.

You can also use mixtures of the aforementioned compounds, interacting with hydroxyl groups.

Preferably, the composition for coating of the present invention include a compound containing at least two isocyanate groups as reactive to the hydroxyl groups of a crosslinking agent.

In addition to the disclosed SOS-functional compounds and these reactive to hydroxyl groups of compounds in compositions for coating of the present invention can be other compounds. Such connections may be the main binder and/or reactive diluents, optionally containing reactive groups that can be crosslinked above is passed hydroxyl-containing compounds and/or reactive to hydroxyl groups of compounds. Examples include hydroxycobalamin binder, for example, a complex polyether polyols such as those described H.Wagner et al., Lackkunstharze, 5thEd., 1971 (Carl Hanser Verlag, Munich), simple polyether polyols polyacrylonitrile, poliuretanoviy, acetobutyrate cellulose, hydroxycobalamin epoxy resin, Alcide and gendarmerie polyols, such as those described in international patent publication WO 93/17060. In addition, there may be hydroxycobalamin oligomers and monomers, such as castor oil and trimethylolpropane. In particular, the composition for coating may also include other hidden hydroxyl functional compounds, such as compounds containing bicyclic group complex orthoevra or complex Spiro-artefiera. These compounds and their use is described in WO 97/31073.

Composition for coating of the present invention may also include oligomers and polymers with thiol functional groups, such as those described in international patent publication WO 01/92362.

Finally, there may be ketone resins, esters of aspergillomas acids and compounds with hidden or not hidden functional amino groups, such as oxazolidine, catimini, aldimine, diimine, secondary amines and polyamine. These and other compounds known in the art and are mentioned in addition to decree what the R in U.S. patent 5214086.

In compositions for coating according to the invention is equivalent to the ratio of reactive to the hydroxyl groups of the groups to alcoholic hydroxyl groups is preferably a value in the range between 0.5 and 4.0, more preferably in the range between 0.7 to 2.5. Under the alcoholic hydroxyl groups is meant the sum of the hidden alcoholic hydroxyl groups and optionally present not hidden alcoholic hydroxyl groups. Thus, the silanol groups are not included in the definition of alcoholic hydroxyl groups.

The invention further includes a method of curing compositions for coating of the present invention. In particular, the hidden alcoholic hydroxyl group and a silanol group SOS-functional compounds must be released. Alcoholic hydroxyl groups interact with reactive towards hydroxyl groups groups cross-linking agents. The resulting silanol groups can participate in the reaction with cross-linking agent that is reactive towards hydroxyl groups, or interact with each other in the condensation reaction, providing the curing composition of the present invention.

Release the hidden alcoholic hydroxyl groups and silanol groups SOS-containing compounds occurs under the influence of the odes in the form, for example, moisture in the air or water added. These reactions release can be accelerated in the presence of a suitable catalyst release, for example, acids or bases. Preferably the catalyst release selected from Lewis acids, Lewis bases and bases Bronsted. Examples of suitable catalysts are dilaurate dibutylamine, 1,4-diazabicyclo[2.2.2]octane and 1,8-diazabicyclo[4.5.0]undec-7-ene. Catalyst release can be used in amounts of from 0 to 10 wt.%, preferably from 0.001 to 5 wt.%, more preferably in quantities of from 0.01 to 1 wt.%, calculated on the dry residue (i.e. the number containing SOS-group of compounds, reactive relative to the hydroxyl groups of compounds and, optionally, the above-mentioned other compounds).

The reaction of the released alcohol hydroxyl groups SOS-containing compounds reactive to the hydroxyl groups of the groups linking agent formed silanol groups and, optionally, additional compounds present in the composition for coating comprising a hydroxyl group or groups that interact with hydroxyl groups, preferably proceeds under the influence of the catalyst structure. Such catalysts are well-known experts in this field. The catalyst is strukturirovaniia can be used in amounts of from 0 to 10 wt.%, preferably from 0.001 to 5 wt.%, more preferably in quantities of from 0.01 to 1 wt.%, calculated on the dry residue (i.e. the number containing SOS-group compounds, compounds that interact with the hydroxyl groups and, optionally, the above-mentioned other compounds).

As an example, various interacting with the hydroxyl groups of the groups include the following catalysts structuring. The polyisocyanates: dilaurate dimethylurea, dilaurate dibutylamine, diacetate dibutylamine, octoate tin dichloride dimethylurea, octoate zinc chelate of aluminum and catalysts based on zirconium or bismuth; polyepoxide connection: tertiary amines and a Lewis acid such as BF3or organic complexes; polyacetylene connection: paratoluenesulfonyl acid and dodecylbenzenesulfonic acid; compounds, polycarboxylic acid: dodecylbenzensulfonate acid, compounds polyanhydrides and compounds of esters of carboxylic acids, ORGANOTIN compounds, organic titanium compounds, acids and bases; connection alkoxysilanes: ORGANOTIN compounds, phosphoric acid, paratoluenesulfonyl acid, dodecylbenzenesulfonic acid and tertiary amines; acceptany group Michael: strong acids and bases, such as alkaline alcoholate met low, tertiary amines; and etherified amino groups: dodecylbenzensulfonate acid.

It should be noted that in some cases the specified catalyst release and the specified catalyst structure can be identical, i.e. one catalyst can catalyze and release containing SOS-group connections, and the above-mentioned reaction cross-linkage.

Due to the great vitality of the composition for coating of the present invention, it can be written in the form of a one-component system. Alternatively, a composition for coating according to the invention can be a part of a multicomponent system, such as a two-component system. For example, one component may include a compound containing SOS group, and a compound that interacts with hydroxyl groups. The second component may include a catalyst release for hydrolysis containing SOS-group connections.

In an alternative embodiment, can be used three-component system. For example, one component may include SOS-containing compound. The second component may include interacting with the hydroxyl groups of the compound. The third component may include catalyst release for hydrolysis SOS-functional connections.

The composition is to cover may optionally include conventional additives, such as solvents, pigments, fillers, equalizer, emulsifiers, defoamers and rheology modifiers, reducing agents, antioxidants, stabilizers based on spatial difficult amines, UV stabilizers, water separators, such as molecular sieves, and antishrink agents.

Preferably, the composition for coating according to the invention include less than 480 g/l volatile organic compounds (VOCS), more preferably the composition for coating includes less than 250 g/l VOC.

To apply the composition for coating on the substrate can be by any method known in the art, for example by rolling, spraying, application by brush, spray drenching, dipping and roller. Preferably the composition for coating, such as described, is applied by spraying.

Composition for coating of the present invention can be applied to any substrate. The substrate may be metal, such as iron, steel and aluminum, plastic, wood, glass, synthetic material, paper, leather or other coating layer. Another layer of the coating may consist of a composition for coating of the present invention or it may be derived from another song to cover. Composition for coating of the present invention is particularly applicable to obtain a clear coating on the gas coatings, obtained from compositions are water-based or solvent-based), basic coatings, colored top coats, primers and fillers. Compositions suitable for use in objects with surfaces, such as bridges, pipelines, industrial plants and buildings, installation of oil and gas or ships. The composition is especially suitable for decoration and restorative finishing cars and larger vehicles such as trains, trucks, buses and airplanes.

Applied composition for coating can be overiden very effectively at a temperature of, for example, 0-60°C. If desired, the composition for coating can be overiden in thermostat, for example, at a temperature in the range of 60-120°C.

It should be understood that the term composition for coating used in the present description, also includes its use as an adhesive composition.

The invention will be further explained with reference to the following examples.

In the examples used the following abbreviations:

Dilaurate dibutylamine:DBTDL
1,4-Diazabicyclo[2.2.2]octane:DABCO
1,8-Diazabicyclo[4.5.0]undec-7-ene:DBU
n-butyl acetate:BuAc
Isopropyle the initial alcohol: IPA
Xylene:Xy
2-Butanone:MEK
Tetraethylorthosilicate:TEOS

In the examples used the following materials:

Tolonate® HDT LV is a cyclic trimer of isocyanurate of hexamethylenediisocyanate, such as Rhodia.

Byk® 331 represents a surface-active additives such as Byk Chemie.

Commercial two-component clear coating based on hydroxyl-containing binders and MDI.

Unless otherwise specified, properties of compositions for coating and forming the films is measured as follows.

Viability is defined as the period of time during which the viscosity of the composition for coating after the initial mixing of the components is doubled.

Drying time is a time before drying dry to the disappearance of the tack-free. Drying evaluate manually. The condition of drying to extinction tack-free surface is achieved when the mark on the coating layer from the solid click of a finger disappears within 1-2 minutes.

The resistance to solvents is determined after the exposure of the film for 1 minute on a piece of wool soaked in MEK. Resistance to solvents assessed visually on a scale from 0 to 5, g is e 0 means the dissolution of the film, and 5 means no damage.

Hardness Persia (Persoz) define method ISO 1522.

Appearance is assessed visually. When there is no visual defects on the surface layer, the appearance was evaluated as good (ok). When bubbles are present, the appearance was evaluated as bad (nok).

To determine the resistance to washing machine first, measure the original gloss panel with the floor. The panel coated is subjected to 10-minute round nylon brush with a diameter of 64 cm, rotating at 150 revolutions per minute. During the processing of the brush panel coated hydrate aqueous solution of sodium dodecyl sulphate containing particles of aluminum oxide as an abrasive. After processing the brush panel rinse with water and dried. After two hours measure the gloss for determining Shine after washing machine. Then the panel is heated at 60°C for 30 minutes and stored at room temperature for six days, after which it re-measure the gloss to determine luster after repeated treatment. The smaller the reduction in gloss after cleaning the machine, the better the resistance to the washing machine panels coated. All measurements of gloss carried out in accordance with ISO 2813 at an angle of 20°With the result expressed in units of gloss.

Getting Spiro-orthosilicate 2-butyl-2-ethyl-1,3-propane diol(SOS 1)

1-litre the th 4-necked flask 320 g of 2-butyl-2-ethyl-1,3-propane diol (2 mol), 100 g of xylene and 208 g of TEOS (1 mol). 0.1 g of sodium are dissolved in 5 ml ethanol and added dropwise to the reaction mixture. The flask is heated to 90°C. the Ethanol is distilled off from the reaction mixture using a 30 cm Packed column. The reaction mixture was gradually heated to 180°to remove all of the ethanol. The xylene is removed by vacuum distillation (10 mbar). The Packed column replace 30 cm Vigreaux column. The vacuum increases to 0.4 mbar and the reaction mixture is heated to 195°C. the Product is distilled from the reaction mixture (BP = 166°C, 0.4 mbar). Receive 309 g of Spiro-orthosilicate 2-butyl-2-ethyl-1,3-propane diol (yield 91%).

Getting Spiro-orthosilicate 2-ethyl-1,3-hexandiol (SOS-2)

In a 1-liter, 4-necked flask is charged with 235 g of 2-ethyl-1,3-hexandiol (1.6 mol), 80 g of xylene and 167 g of TEOS (0.8 mol). 0.1 g of sodium are dissolved in 4 ml ethanol and added dropwise to the reaction mixture. The flask is heated to 90°C. the Ethanol is distilled off from the reaction mixture using a 30 cm Packed column. The reaction mixture is gradually heated to 200°to the complete removal of ethanol. The reaction mixture is cooled to 150°and the xylene is removed by vacuum distillation (20 mbar). The Packed column replace 30 cm Vigreaux column. The vacuum increases to 0.1 mbar and the reaction mixture is heated to 158°C. the Product is distilled from the reaction mixture (BP = 126°C, 0.1 mbar). Receive 250 g of Spiro-orthosilicate 2-ethyl-13-hexandiol (yield 98%).

Getting Spiro-orthosilicate monoallelic simple ether of trimethylolpropane (SOS 3)

In a 500-ml 4-necked flask is charged with 200 g of simple monoallyl ether of trimethylolpropane (1.2 mol) and 123 grams TEOS (0.6 mol). 0.1 g of sodium are dissolved in 4 ml of methanol and added dropwise to the reaction mixture. The flask is heated to 90°C. the Ethanol is distilled off from the reaction mixture using a 30 cm Packed column. The reaction mixture is gradually heated to 260°to the complete removal of ethanol. The Packed column replace 30 cm Vigreaux column. The vacuum increases to 0.2 mbar and the reaction mixture is heated to 185°C. the Product is distilled from the reaction mixture (BP = 161°C, 0.2 mbar). Get to 72.4 g of Spiro-orthosilicate simple monoallyl ether of trimethylolpropane (yield 33%).

Compositions for coating 1-10 and comparative composition for coating 11

Conditions for obtaining compositions for coating 1-10 of the present invention are summarized in table 1. Composition 11 is comparative, without SOS. Table 1 presents the components of the composition and amount of mass parts. The components are added in the order listed in the table and mixed manually by stirring with a spatula.

All formulations 1-10 table 1 had an initial viscosity of 110 MPa at a theoretical solids content of about 82-87 wt.%. Comparative composition 11 had a viscosity of 220 m is as in theoretical solids content of 85 wt.%. Thus, to achieve the same viscosity, the comparative composition 11 requires a higher content of organic solvent than the composition according to the invention.

Composition for coating to be applied on a tin plate with a layer thickness of approximately 60 μm manual exhaust plate and dried at room temperature or at 60°C.

For sprayable compositions for coating compositions 1-10 diluted with a mixture of 1:1 BuAc/Xy to achieve a viscosity of 55 MPa, bringing theoretical solids content up to about 79 wt.%. This corresponds to a VOC less than 250 g/L.

We can conclude that all compositions for coating 1-11 table 1 have excellent viability for more than 7 days.

From table 2 we can conclude that all compositions for coating 1-10 have a short drying time curing at 60°C. the drying Rate can be increased in the presence of a catalyst release. Resistance to solvents, hardness and appearance of all of the coatings obtained in the presence of a catalyst, excellent. Comparative composition 11 has a relatively long drying time and not enough good appearance due to the formation of bubbles.

Table 3 summarizes the properties of films of compositions for coating 1-10 and comparative whom is osili 11, solidified at room temperature. The difference between the time of the drying compositions for coating in the presence and in the absence of catalyst release becomes more pronounced. However, even compositions for coatings 1 and 2 in the absence of catalyst release provide high hardness within 8 days of curing at room temperature. Comparative composition 11 dries slower than composition for coating according to the invention.

All of the fully cured film of the composition for coating 1-10 not show damage after immersion in water for 4-6 hours.

The film obtained from the composition for coating 2 will also experience resistance to the washing machine, as described above. Table 4 gives an overview of the results in comparison with a commercial two-component clear coating based on hydroxyl-containing binders and MDI. Table 4 shows that the original gloss, luster after repeated washing cycle, the films obtained from the composition for coating according to the invention, is higher than the gloss of the films based on commercial systems. More importantly, we can conclude that the film of the composition for coating according to the invention show a smaller reduction in gloss after processing machine in the washing mode, than the commercial system. Thus, the film pok is iti according to the invention have improved resistance to washing machines.

Table 1
Compositions for coating 1-10 and comparative composition 11
Composition for coating/Component1234567891011
SOS 15,005,005,005,005,00----
SOS 2-----4,604,604,60-
SOS 3-----of 5.4of 5.4-
Xylene1,501,501,501,501,501,001,001,001,251,251,50
BuAc1,501,501,501,501,50 1,001,001,001,251,25
10% Byk 331 in BuAc0,150,150,150,150,150,200,200,200,250,250,20
10% DABCO in IPA---0,250,50--0,23---
10% DBU in BuAc--0,25--------
10% DBTDL in BuAc/Xy0,250,500,500,500,500,460,920,920,520,360,50
Tolonate® HDT LV12,7012,7012,7012,7012,7012,5012,5012,5012,5012,5012,50
Viability (days)>7>7>7>7>7>7>7>7>7 >7>7

Table 2
Properties of films of compositions for coating 1-10 and comparative compositions 11, hardened at 60°
Composition for coating/Component1234567891011
Drying time at 60°With (minutes)2510<6652212107825
Resistance to solvents after 1 dayn.d.**5555555n.d.**n.d.**n.d.**
The hardness according to Persoz after 1 day145174179263*174*188214225162n.d.**209
The hardness according to Persoz 8 days266290247271137192 n.d.**n.d.**199230305
Appearanceokokokokokokokokokoknok
* determined after 3 days
** n.d. mean values undefined

Table 3
Properties of films of compositions for coating 1-10 and comparative compositions 11, solidified at room temperature
Composition for coating/Property1234567891011
Drying time at room temperature (minutes)>12035-40161310>1201204010-1520-30>180
Resistance to solvents after 1 dayn.d.**5555555n.d.**/td> n.d.**n.d.**
The hardness according to Persoz after 1 day7691129155*77*19219118199n.d.**125
The hardness according to Persoz 8 days26924523515263198n.d.**n.d.**120194288
Appearanceokokokokokokokokokokok
* determined after 3 days
** n.d. mean values undefined

Table 4
Resistance to washing machines of the panels coated with the composition 2
The floor of the transparenciesThe original glossGloss after machine washingLuster after repeated washing
Composition for coating 2, cured at 60°85,077,281,6
Songs which I have to cover 2, cured at room temperature85,476,281,7
Commercial two-component clear coating (comparative)to 83.569,877,7

Campsite to cover, including the heterocyclic compound of silicon and interact with hydroxyl groups of a crosslinking agent, where the heterocyclic silicon compound is a compound containing at least one Spiro-orthosilicate group, wherein the group of the crosslinking agent that interacts with hydroxyl groups selected from isocyanate groups, thioisocyanate groups, apachegroup, apiculteur groups, acetylenic groups, groups, carboxylic acid groups, anhydrides, carboxylic acid groups, esters of carboxylic acids, groups of carbodiimides, alkoxysilane groups acceptor groups Michael etherified amine groups and mixtures thereof.

2. Composition for coating according to claim 1, characterized in that the compound containing at least one Spiro-orthosilicate group selected from the compounds according to the following formulas Ia, Ib and Ic

3. Composition for coating according to claim 1 or 2, characterized in, Thu the cross-linking agent, interacting with hydroxyl groups is a compound containing at least two isocyanate groups.

4. Composition for coating according to claim 1, characterized in that it contains less than 480 g/l volatile organic compounds.

5. Composition for coating according to claim 1, characterized in that it contains the catalyst release for release compounds containing at least one Spiro-orthosilicate group.

6. Composition for coating according to claim 1, characterized in that it contains a catalyst structure for the reaction between hydroxyl groups and a crosslinking agent that interacts with hydroxyl groups.

7. Composition for coating according to claim 1, characterized in that the equivalent ratio of groups that interact with the hydroxyl groups to alcoholic hydroxyl groups is a value between 0.5 and 4.0.

8. Composition for coating according to claim 1, characterized in that it contains oligomers and polymers with thiol functional groups.

9. Composition for coating according to claim 1, characterized in that it comprises a hydroxyl-containing binder.

10. Composition for coating according to claim 1, characterized in that it is a composition of filler.

11. Composition for coating according to claim 1, characterized in that it is a transparent coating composition.

p> 12. The method of curing the composition for coating according to any one of the preceding, characterized in that

a) hidden alcoholic hydroxyl groups and silanol groups, compounds containing at least one Spiro-orthosilicate group, this will release in the presence of moisture, optionally in the presence of a catalyst release

b) interact alcoholic hydroxyl groups with groups of cross-linking agent that interacts with hydroxyl groups, optionally in the presence of a catalyst structuring, and

c) interact formed silanol groups with cross-linking agent that interacts with hydroxyl groups, and/or their interaction with each other in the condensation reaction, optionally in the presence of a catalyst of the structure.

13. The use of a composition for coating according to any one of preceding claims 1 to 11 for decoration and secondary finishing cars and larger vehicles.

14. The use of a composition for coating according to any one of preceding claims 1 to 11 as an adhesive composition.



 

Same patents:

FIELD: polymerization processes.

SUBSTANCE: invention relates to two-component composition used to initiate curing of one or more polymerizable monomers that are cured when affected by free radicals, which composition consists of organoborane-amino complex and an isocyanate capable of destroying organoborane-amino complex, wherein equivalent ratio of amine nitrogen atoms to boron atoms ranges from more than 4.0:1 to 20.0:1. In another embodiment of invention, subject of invention is two-component composition for use as sealing materials, coatings, primers for modifying polymer surfaces, and as molded resins, which composition consists of component 1: organoborane-amino complex wherein ratio of amine nitrogen atoms to boron atoms ranges from more than 4.0:1 to 20.0:1; component 2: one or more monomers, oligomers, or polymers having olefinic instauration, which are able of being subjected to free-radical polymerization; and effective amount of an isocyanate, which can initiate dissociation of complex to free borane for initiation of polymerization of one or more monomers, oligomers, or polymers having olefinic instauration, provided that complex dissociation initiator is stored separately from complex until initiation of polymerization becomes desirable. Such compositions are handling safe, i.e. they are not self-inflammable, stable at or near ambient temperature and so they do not initiate polymerization at or near ambient temperature in absence of complex dissociation initiator. Polymerized composition show good cohesion and adhesion strength. Described are polymerizable composition polymerization process, method of gluing two or more substrates using polymerizable composition; method of modifying polymer surface having low surface energy using polymerizable composition, as well as coating and laminate containing polymerizable composition.

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10 cl, 2 dwg, 4 tbl

FIELD: building materials.

SUBSTANCE: invention relates to a hardening composition used in building industry. The composition comprising a polymer with two or more thiol groups per a molecule, compound with two or more isocyanate groups per a molecule, carbon black and calcium carbonate involves additionally a filling agent wherein silicic acid or silicate is the main component or organic filling agent wherein ground powdered carbon as the main component. The composition shows satisfactory stability in storing the basic compound and the hardening capacity even after storing the basic compound and, except for, it forms the hardened join with sufficient rupture strength limit, hardness and properties of barrier for gas. The composition comprises a hydrocarbon plasticizer and an organometallic compound preferably that provides highly effective hardening properties in combination with higher mechanical strength and properties of barrier for gas. Proposed hardening composition can be used as sealing material in manufacturing isolating glasses, frames, windows for transportation means, glues and covers.

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9 cl, 12 tbl, 11 ex

FIELD: polymer materials.

SUBSTANCE: invention relates to polymer compositions including at least one polyurethane prepolymer A with isocyanate terminal groups obtained from at least one polyisocyanate with at least one polyol A1 and, if necessary, with at least one polyol A2. wherein A1 is linear polyoxyalkylenepolyol with unsaturation degree ,less than 0.04 m-equ/g; A2 is polyol, which is present in amount 0-30%, preferably 0-20%, in particular 0-10% based on total amount A1+A2; and at least one polyaldimine B. Composition is a mixture of polyurethane prepolymer A with polyaldimine B. In absence of moisture, such compositions are stable on storage. When being applied, such compositions are brought into contact with moisture, after which polyaldimines are hydrolyzed into aldehydes and polyamines, and polyamines react with polyurethane prepolymer containing isocyanate groups. Products obtained from such composition possess very wide spectrum of properties, including tensile strength varying within a range from 1 to 20 MPa and ultimate elongation above 1000%. Composition may be used as glue, hermetic, coating, or facing.

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3 cl, 7 tbl, 34 ex

FIELD: polymer materials.

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13 cl, 3 tbl, 20 ex

Glue composition // 2271377

FIELD: adhesives.

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1 tbl

FIELD: gluing compositions.

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5 tbl

FIELD: rocketry; development of a composition of binding substance for manufacture of the brush type products.

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1 tbl

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FIELD: rocket engineering and adhesives.

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9 tbl, 7 ex

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FIELD: thermo-setting heat-activated paint compositions, application of such composition on substrate.

SUBSTANCE: proposed composition contains at least one amorphous binder at Ts below 5C and/or at least one crystalline or semi-crystalline binder at melting point or interval of melting points below 150C, at least one epoxy resin, at least one polyamine including cyanamide groups, at least one blocked or latent catalyst in the amount of 0.5-5 mass-%; this catalyst is deblocked or activated at elevated temperature below hardening temperature of paint composition. Paint composition is characterized by Ts below 5C and viscosity below 2000 mPa·sec measured at temperature of 80C and shift rate of 10 c-1. The method of application of coat to substrate includes the following stages: first, paint composition is heated to temperature of application, then, composition is applied on substrate and paint thus applied is heated to temperature of its hardening till complete hardening. Paint composition is used for application onto mirror reverse surface, onto metal surface or onto substrate sensitive to heating. This composition forms thin anti-corrosive coat free from volatile organic compounds which may be used at temperature of application between 100 and 160C by employing the methods of application at low temperatures.

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15 cl, 3 tbl, 9 ex

FIELD: chemical industry; other industries; production of the polymeric coatings on the substrates by the baking for cure.

SUBSTANCE: the invention is pertaining to the polymeric coatings produced on the substrates by the baking for cure. The technical result of the invention is development of the varnishes for the baking for cure, which are mainly detach the harmless products and make the solid coatings resistant to the action of the dissolvents. The invention presents the coatings produced on the substrates by the baking for cure of the mixture consisting of 1 mass share of styrene copolymer and the allyl alcohol treated with diisocynotams with the contents of the OH-group from 1 up to 10 %; 0.05-1 mass share of the oxalic acid; 0.2-5 mass share of the organic solvents and, if necessary, of pigments and the auxiliary components for the varnishes, at the temperatures from 120°С up to 250°С and durations of the baking for cure from 1 up to 200 minutes. The produced coatings have the high hardness and positive stability to the action of the dissolvents. At that during the baking for cure only the dissolvent and water are separated.

EFFECT: the invention ensures development of the varnishes for the baking for cure, which are mainly detach the harmless products and make the solid coatings resistant to the action of the dissolvents.

1 cl, 5 ex

FIELD: polymer materials.

SUBSTANCE: invention relates to moisture-hardenable polyurethane compositions, namely to those containing at least one polyurethane prepolymer with isocyanate groups obtained from at least one polyisocyanate and at least one polyol. In addition to prepolymer, composition further contains at least one polyaldimine prepared from at least one polyamine with primary aliphatic amino groups and at least one aldehyde of general formula: wherein Y1 and Y2, independently from each other, represent alkyl, aryl, or arylalkyl group, which is optionally substituted, may contains heteroatoms and/or unsaturated fragments, or Y1 and Y2 together form carbocyclic or heterocyclic ring, which is composed of 5-8, preferably 6 atoms and optionally contains one or two unsaturated bonds; and R1 represents either linear or branched C11-C30-alkyl chain, optionally with at least one heteroatom, especially with at least one ether oxygen atom, or linear or branched C11-C30-alkyl chain with one or numerous unsaturated bonds, or R1 represents group or in which R2 represents linear, branched, or cyclic hydrocarbon chain with 2-16 carbon atoms, optionally incorporating at least one heteroatom, especially at least one ether oxygen atom, or linear, branched, or cyclic C2-C16-hydrocarbon chain with one or numerous unsaturated bonds; and R3 represents linear, branched, or cyclic hydrocarbon chain with 1-8 carbon atoms. Invention describes methods for preparing such compositions and polyaldimine. Compositions can be used as glues, sealing formulations, coatings, or floorings hardening without unpleasant smell and suitable to seal layers inside buildings or to join structural members in vehicle interiors.

EFFECT: extended assortment of hardenable liquid polymer compositions.

24 cl, 4 tbl, 14 ex

FIELD: building materials.

SUBSTANCE: invention relates to a hardening composition used in building industry. The composition comprising a polymer with two or more thiol groups per a molecule, compound with two or more isocyanate groups per a molecule, carbon black and calcium carbonate involves additionally a filling agent wherein silicic acid or silicate is the main component or organic filling agent wherein ground powdered carbon as the main component. The composition shows satisfactory stability in storing the basic compound and the hardening capacity even after storing the basic compound and, except for, it forms the hardened join with sufficient rupture strength limit, hardness and properties of barrier for gas. The composition comprises a hydrocarbon plasticizer and an organometallic compound preferably that provides highly effective hardening properties in combination with higher mechanical strength and properties of barrier for gas. Proposed hardening composition can be used as sealing material in manufacturing isolating glasses, frames, windows for transportation means, glues and covers.

EFFECT: improved and valuable technical properties of composition.

9 cl, 12 tbl, 11 ex

FIELD: polymer materials.

SUBSTANCE: invention relates to polymer compositions including at least one polyurethane prepolymer A with isocyanate terminal groups obtained from at least one polyisocyanate with at least one polyol A1 and, if necessary, with at least one polyol A2. wherein A1 is linear polyoxyalkylenepolyol with unsaturation degree ,less than 0.04 m-equ/g; A2 is polyol, which is present in amount 0-30%, preferably 0-20%, in particular 0-10% based on total amount A1+A2; and at least one polyaldimine B. Composition is a mixture of polyurethane prepolymer A with polyaldimine B. In absence of moisture, such compositions are stable on storage. When being applied, such compositions are brought into contact with moisture, after which polyaldimines are hydrolyzed into aldehydes and polyamines, and polyamines react with polyurethane prepolymer containing isocyanate groups. Products obtained from such composition possess very wide spectrum of properties, including tensile strength varying within a range from 1 to 20 MPa and ultimate elongation above 1000%. Composition may be used as glue, hermetic, coating, or facing.

EFFECT: expanded possibilities of polyurethanes.

3 cl, 7 tbl, 34 ex

FIELD: composite materials.

SUBSTANCE: in particular, invention relates to employment of polyisocyanates compositions as binders for composites containing lignocellulose fibers such as oriented wood chipboard.

EFFECT: improved performance characteristics regarding detachment of product as compared to conventional polyisocyanates employed for binding lignocellulose material.

11 cl, 7 tbl, 8 ex

FIELD: polymer materials.

SUBSTANCE: invention relates to polyurethane-polyol compositions comprising product of reaction of a polyol and Herbert alcohol, the two containing In average 12 carbon atoms. Preferred polyols are α,β-diols and α,β-diols. Polyurethane-polyol compositions exhibit very low viscosity and are particularly suitable in coating compositions with very low content of volatile organics. Hardened coating obtained from claimed compositions ensure high resistance to cracking and can be applied on various substrates such as metal, plastic, wood, glass, ceramics.

EFFECT: increased strength of coatings on a variety of substrates.

5 cl, 3 tbl

FIELD: coating compositions.

SUBSTANCE: invention relates to composition used for coating applying and comprising polyisocyanate compound, hydroxyl-functional film-forming polymer and nonvolatile branched monoatomic alcohol wherein the aliphatic branched monoatomic alcohol is preferable but long-chain nonvolatile branched monoatomic alcohols are more preferable. This provides preparing compositions for applying coatings that possess the improved indices of fluidity and can be used for preparing coatings with the improved appearance and without the negative effect on other properties. Also, invention relates to the multiple composition fir applying coatings. The multicomponent composition for applying coatings represents the bicomponent composition for applying coatings preferably that comprises the polyisocyanate component in addition to hydroxyl-functional film-forming polymer comprising nonvolatile branched monoatomic alcohol also. Also, invention relates to a method for car finishing comprising applying compositions for applying coating on car and to a method for preparing the multilayer coating.

EFFECT: valuable properties of composition.

30 cl, 1 tbl, 2 ex

FIELD: chemistry of polymers.

SUBSTANCE: invention relates to aromatic polyurethane polyols used as components of priming compositions. Invention describes the priming composition comprising aromatic polyurethane polyol including product of reaction: (a) at least one diol component among number of α,β-diols, α,γ-diols and their mixtures; (b) at least one triisocyanate; (c) at least one diisocyanate wherein at least one isocyanate is aromatic one, and molecular mass or aromatic polyurethane polyol is 3000 Da, not above, and a cross-linking agent also. Prepared aromatic polyurethane polyol shows viscosity value by Brookfield at the level 8260 centipoises, OH-number 192.6 KOH/g and the dispersity (Mn/Mw) at the level 3.0. Priming compositions prepared by using indicated aromatic polyurethane polyol are useful in finishing large means of transportation, for example, trains, trucks, buses and airplanes, in particular, in vehicle body works. Also, invention relates methods for applying priming compositions on support comprising applying indicated compositions, and to a method for finishing car in repairs comprising applying the indicated priming composition.

EFFECT: improved and valuable properties of composition.

11 cl, 5 tbl, 12 ex

FIELD: protective coatings.

SUBSTANCE: invention relates to a method for applying onto wood substrate coating with increased resistance to effects of chemical products. Method comprises following stages: (i) addition, to aqueous polyatomic alcohol suspension, of composition based on isocyanate(s) and anionic surfactant having hydrophilic portion containing anionic group and lipophilic portion containing hydrocarbon radical, isocyanate(s)-based composition containing no more than 30% surfactant bound to isocyanate group, to form aqueous emulsion of isocyanate(s) and surfactant; (ii) applying resulting mixture onto wood surface of substrate; and (iii) aging to complete reaction of isocyanate(s) with polyatomic alcohol required to form polyurethane coating.

EFFECT: increased strength of coating (at a level of 90 units) and acquired resistance to a variety of chemical, cosmetic, and woof products according to corresponding standard.

18 cl, 4 dwg, 5 ex

FIELD: inorganic chemistry, mining industry.

SUBSTANCE: invention relates to composites based on alkaline metal silicate and polyisocyanate and, in particular, to a method for preparing composites based on alkaline metal silicate and polyisocyanate proceeding without isolation of catalyst. Invention describes a method for preparing indicated composites that involves the following stages: a) mixing a catalyst with polyisocyanate; b) mixing alkaline metal silicate with water, and c) mixing components a) and b) to form the reaction mixture interacting and forming the hardened composite. As a catalyst in said method 2,2'-dimorpholine diethyl ester is used wherein the ratio SiO2 : Na2O is from about 1.6 to about 3.32, and more preferably from about 2.0 to about 3.0. Also, invention describes a method for strengthening constructions in mining, in tunneling and related works, and composite obtained by the proposed method. Invention provides preparing composites with the fluidity limit value 3460 pound/square inch, deformation value at fluidity at the level 8.5%, limit at maximal loading 6150 pound/square inch.

EFFECT: improved and valuable properties of composites.

28 cl, 1 tbl, 1 dwg, 3 ex

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