Composition for producing sealant for binding unprimed surface with glass and plastic

FIELD: chemistry.

SUBSTANCE: composition contains one or more urethane prepolymers, having isocyanate residues, one or more compounds which catalyse the reaction of isocyanate residues with water or a compound which contains active hydrogen and one or more alpha-hydrocarbyl silane compounds. The urethane propolymer additionally contains a silane functional group. The composition additionally contains a compound or a polymer, containing silane residues. The composition additionally contains one or more compounds which catalyse silanol condensation. The composition is deposited onto the surface of glass or plastic with a coating or onto the surface of a substrate to obtain a sealant, then brought into contact and the composition is then hardened. The composition is placed between the glass or plastic with coating and the substrate. The sealing composition is used for binding an unprimed surface with a coating, such as a window lintel with glass with a transparent plastic, coated with an abrasive-resistant coating or with glass or plastic with a coating, additionally coated with glass cement, such as ceramic or organic glass cement.

EFFECT: improved composition properties.

10 cl, 2 ex

 

This application has a priority date based on provisional patent application U.S. No. 60/685911, filed may 31, 2005.

The present invention relates to compositions of polyurethane sealant that can be used without a primer. More specifically, the sealant composition may contact without primer surface coating, such as window flange, and glass with a transparent plastic that is covered with abrasion-resistant coating (plastic coated), or with glass or plastic coated, optionally covered with a cement, such as a ceramic or organic cement.

Composition polyurethane sealant, typically contain at least one urethane prepolymer. Sealants suitable for linking with non-porous substrates, such as glass, is described, for example, in U.S. patent No. 4374237 and U.S. patent No. 4687533 that both are turned off as references. U.S. patent No. 4374237 describes polyurethane sealant containing urethane prepolymers, which further interact with the compounds of secondary amines containing two silane groups. U.S. patent No. 4687533 describes polyurethane sealant containing urethane prepolymers which contain silane groups, which are obtained by reaction of MDI having at least three isocyanate groups, with the amount of alkoxysilane, less than the equivalent having a terminal group containing active hydrogen atoms that interact with the isocyanate groups with the formation of isocyanatobenzene having at least two unreacted isocyanate groups. In the second stage isolatoren mixed with additional polyisocyanate, and a mixture interacts with the polyol with the formation of polyurethane prepolymer having isocyanate end groups and side alkoxysilane group.

Installing a window in a vehicle, as a rule, is a three-stage process. First, clear silane primer is applied to the glass to clean and prepare the surface for bonding. Secondly, the primer, which is essentially a dispersion of carbon black, which also contains a compound having a silane and/or isocyanate functional groups, often referred to as "sutomiscica primer, then applied over the transparent primer. Thirdly, apply the adhesive to the primed glass, which is then installed in the structure. For vehicles and some buildings these materials are applied to the cement ceramic enamels or organic coating located on the periphery of the window. The cement is designed for C the shields of the adhesive from UV light, to hide from view the components of the adhesive and/or finishes, see U.S. patent No. 5370905, which is included in the present description by reference. In addition, when such compositions are used for bonding glass substrates with painted substrates, such as when installing a window in the manufacture of the vehicle, the shear strength at the splices associated substrate may be less than is desirable for safety or structural purposes. As a consequence, a separate primer for paints containing a solution of one or more silanes, often applied on the painted substrate before application of the composition in most of the operations for assembling vehicles for linking the windshield and rear window. The use of primers when the Assembly is undesirable due to the fact that it introduces an additional stage, the additional cost, the risk of damage to the painted surface, if the drop will go in an undesirable place, and the Assembly line operators exposed to more chemicals.

For the system of primer and adhesive was commercially viable, the system should provide durable binding. "Durable link" means that the adhesive holds the window in the structure during the period of several years. As the structure to which the Torah is traditionally associated window glass or plastic, covered with abrasion-resistant coating that can withstand a considerable number of years, it is expected that binding, holding the glass or plastic covering structure, will also serve a significant number of years.

It would be desirable to provide a composition which, when associated with a colored substrate and the glass or plastic coated and cured, provides a linked structure with higher shear strength splices, in particular when used in the absence of a primer for paint and/or primer on glass or plastic coated. What you will need is a system that makes it possible for durable adhesion of the composition on the surface of the substrate.

In one aspect of the present invention is a composition containing

(1) one or more urethane prepolymers having isocyanate functional residues;

(2) a catalytic amount of one or more compounds which catalyze the interaction of the isocyanate residue with water or with a compound containing active hydrogen; and

(3) one or more alpha-hydrocarbonsoluble compounds having at least one hydrolyzable group associated with the silicon atom and is associated with a carbon atom, which, in turn, is associated with the atom to Omnia, alpha-carbon atom hidrocarburos group through the functional connection of the heteroatom.

In a preferred embodiment, prepolymer further comprises a silane functional group or the composition further comprises a compound or polymer that contains silane residues and is compatible with polyurethane prepolymers.

In many cases, the catalyst for the interaction between isocyanate and water or an active hydrogen atom will also catalyze the reaction of condensation of silanol. In some embodiments, the implementation may be desirable to add to the composition, catalytic amounts of one or more compounds which catalyze the condensation of silanol, where the catalyst is other than a catalyst for the reaction of isocyanate and water, or compounds containing active hydrogen, that is, catalytic amounts of one or more compounds which catalyze the interaction of the isocyanate residue with water or compound containing active hydrogen.

The composition of the present invention is suitable for bonding glass or plastic coated with a substrate. Preferably, the glass or plastic cover has the shape of a window, and the substrate is a window flange structure such as a building or a car. P is edocfile, glass or plastic with a coating and/or substrate is not primed before bringing into contact of the adhesive with the appropriate surfaces.

In another embodiment, the present invention is a method of bonding a glass substrate, which comprises bringing into contact of the composition in accordance with the present invention with glass or plastic coated and the other substrate with the composition of the present invention, located between the glass or plastic with a coating and a substrate, and then enabling the composition to cure in order to associate a glass or plastic coated with a substrate.

The composition of the present invention is suitable for bonding glass and/or plastic coated with plastic, metal, fiberglass and composite substrates, which may or may not have a coating or painting. Composition gives unexpectedly high shear strength splices, when the composition of the primers is not applied on pre-painted plastic, metal, fiberglass or composite substrate and/or glass or plastic coated. Plastic coated may be a transparent plastic, with abrasion-resistant coating located on the surface. Compositions of the present invention, associated podlozhkami coated, for example, those covered by a system of acid-resistant coatings, and/or with glass or plastic coated, without the need for primer, achieve more rapid stiffening at low temperatures and maintain adhesion, when exhibited to the impact of environmental conditions.

The prepolymers used in the present invention may be a conventional prepolymers used in polyurethane adhesive compositions. In a preferred embodiment, the prepolymers are mixed with a compound or polymer having a silane functional group. In another preferred embodiment, prepolymer contains a silane functional group, and isocyanate functional group. Urethane prepolymer having a silane functional group that can represent the entire prepolymer used in the adhesive, or it can be mixed with prepolymer, which has a silanol functional group.

Preferred urethane prepolymers for use in obtaining the compositions of the present invention include any compound having an average number of isocyanate functional groups, at least about 2.0 and a molecular weight (average)of at least about 2000. Preferably, the media is the amount of isocyanate functional groups prepolymer is, at least about 2.2, and more preferably at least about 2.4. Preferably, the amount of isocyanate functional groups is not more than about than 4.0, more preferably no more about than 3.5, and most preferably no more about than the 3.0. Preferably, the average molecular weight of prepolymer is at least about 2500, and more preferably at least about 3000; and preferably no more than about than 40,000, more preferably no more about than 20,000, more preferably not more than about than 15,000, and most preferably no more about than 10000. Prepolymer can be obtained by any suitable method, such as the interaction of reactive towards isocyanate compounds containing at least two reactive towards isocyanate containing active hydrogen groups in stoichiometric excess compared with the polyisocyanate in the reaction conditions required for the formation of the corresponding prepolymer.

Preferred polyisocyanates used in the preparation of prepolymer include any aliphatic, cycloaliphatic, analiticheskii, heterocyclic or aromatic polyisocyanate or mixture is. Preferably, the polyisocyanates used are the average number of isocyanate functional groups, at least about 2.0 and an equivalent weight of at least about 80. Preferably, the average number of isocyanate functional groups MDI is at least roughly 2.0, more preferably at least about 2.2, and most preferably at least about 2.4; and preferably no more than about than 4.0, more preferably no more about than 3.5, and most preferably no more about than the 3.0. Can also be used a greater number of functional groups, but they can cause excessive cross-stitching and lead to the production of adhesive, which is too viscous for manipulation and easy application and can cause excessive brittleness of the cured adhesive. Preferably, the equivalent weight of MDI equal to at least about 80, more preferably at least about 110, and most preferably at least about 120; and preferably no more about than 300, more preferably not more than about 250, and most preferably no more than about 200.

Examples of preferred polyisocyanates include those described Wu, U.S. patent No. 6512033, hundred the Betz 3, from line 3 to line 49, which is included as a reference. Preferred isocyanates are aromatic isocyanates, alicyclic isocyanates and their derivatives. Even more preferred polyisocyanates include diphenylmethanediisocyanate and its polymeric derivatives, isophorondiisocyanate, tetramethyldisilane, 1,6-hexamethylenediisocyanate and their polymeric derivatives, bis(4-isocyanatophenyl)methane and trimethylhexamethylenediamine. The most preferred isocyanate is diphenylmethanediisocyanate.

The term "reactive towards isocyanate compound", as used here, includes any organic compound having at least two reactive towards isocyanate residue, such as a compound containing a residue of an active hydrogen, or immunofunctional connection. For the purposes of the present invention the residue containing active hydrogen refers to a residue containing a hydrogen atom which, thanks to its position in the molecule demonstrates significant activity in accordance with the method Servicenow described by Wohler in the Journal of American Chemical Society, Vol. 49, p. 3181 (1927). Illustrations of such residual active hydrogen are-COOH, -OH, -NH2, -NH-, -CONH2, -SH, and-CONH-. Preferred compounds is of, containing active hydrogen include polyols, polyamine, polymercaptan and polyacid. Suitable for use immunofunctional compounds are those which have at least one end aminogroup molecule, such as are described, for example, in U.S. patent No. 4910279, which is incorporated by reference in its entirety. Preferably, the reactive towards isocyanate compound is a polyol, and more preferably, is a simple polyetherpolyols.

Preferred polyols suitable for the production of prepolymers include those described Wu, U.S. patent No. 6512033, column 4, line 10 to line 64, which is included as a reference, and include, for example, a simple polyether polyols complex polyether polyols, poly(alkalescent)polyols, hydroxycobalamin simple polythioether, polymer polyols (dispersions of vinyl polymers such polyols, commonly referred to as copolymer polyols and mixtures thereof. Preferably, the reactive towards isocyanate compound has an average number of functional groups, at least about 1.5, more preferably at least about 1.8, and most preferably at least about 2,0; and preferably, no greater example is about, than 4.0, more preferably no more about than 3.5, and most preferably no more about than the 3.0. Preferably, the equivalent weight of the reactive towards isocyanate compound is at least about 200, more preferably at least about 500, and even more preferably at least about 1000; and preferably no more about than 5000, more preferably no more about than 3000, and most preferably no more about than 2500.

Preferably, the prepolymers suitable for the present invention, exhibit a viscosity sufficient to make possible the use of the prepolymers in the adhesive compositions. Preferably, the obtained prepolymers exhibit a viscosity of about 6000 centipoise (600 N·sec/m2or more, and more preferably about 8000 centipoise (800 N·sec/m2) or more. Preferably, the polyurethane prepolymers exhibit a viscosity of about 30,000 centipoise (3000 N·sec/m2or less, and more preferably about 20,000 centipoise (2000 N·sec/m2) or less. Above about 30,000 centipoise (3000 N·sec/m2) polyurethane composition becomes too viscous for pumping and for this reason cannot be applied using conventional technologies. Below about 600 centipoise (600 N·sec/m 2) prepolymers do not provide sufficient integrity to allow for the use of compositions, using the prepolymers in the desired applications. The viscosity, as used here, is measured using a Brookfield viscometer (Brookfield Viscometer), Model DV-E, spindle RV #5, at a speed of 5 revolutions per second and at a temperature of 25°C.

The number isocyanatobenzene compounds used to obtain prepolymer represents a number, which gives the desired properties, that is, the content of free isocyanate and viscosity, as discussed earlier. Preferably, the isocyanates are used to obtain prepolymer in the amount of approximately 6.5 mass parts or more, more preferably, about to 7.0 mass parts or more, and most preferably about 7.5 mass parts or more. Preferably, the polyisocyanates used to obtain prepolymer used in an amount of about 12 mass parts or less, more preferably, approximately 10,5 mass parts or less, and most preferably, about 10 mass parts or less.

One or more, as used here, means that at least one or more than one of the above components can be used as described. The value that is used by attributed the Yu to the number of functional groups, means the average theoretical number of functional groups, as a rule, it is calculated from the stoichiometry of the ingredients used. Typically, the actual average number of functional groups is different due to imperfections in the raw material, incomplete conversion of the reactants and by-products formation.

Polyols (diols and triola) are present in a quantity sufficient to interact with the greater part of the isocyanate groups of the isocyanate, leaving a sufficient number of isocyanate groups to obtain the desired content of free isocyanate of prepolymer. Preferably, the polyols are present in an amount of about 30 mass parts or more with respect to the weight prepolymer, more preferably, about 35 mass parts or more, and most preferably, about 40 mass parts or more. Preferably, the polyols are present in an amount of about 75 mass parts or less, relative to the weight prepolymer, more preferably, about 65 mass parts or less, and most preferably, about 60 mass parts or less.

Prepolymer can be obtained by any appropriate method, such as polymerization in bulk and polymerization in solution. The reaction for obtaining prepolymer is carried out in anhydrous conditions is, preferably in an inert atmosphere such as nitrogen atmosphere, to prevent cross-linkage isocyanate groups under the action of atmospheric humidity. The reaction preferably is carried out at a temperature between about 0°C and about 150°C, more preferably between about 25°C and about 80°C until the residual isocyanate content determined by titration of a sample will not be very close to the desired theoretical value. The isocyanate content in the prepolymers is preferably in the range from about 0.1 percent to about 10 percent, more preferably in the range from about 1.5 percent to about 5.0 percent, and most preferably in the range from about 1.8% to about 3.0%.

Prepolymer is present in the composition according to the present invention in sufficient quantity, so that the sealant is capable of binding glass or plastic coated with metal, plastic, fiberglass or composite substrates, preferably the substrates are coated or painting, and more preferably, the substrate is painted with acid resistant paint. Preferably, the polyurethane prepolymer is present in an amount of about 30 mass parts or more, relative to the weight of the composition, more preferably about 50 mass h is stay or more and most preferably, about 55 mass parts or more. Preferably, the polyurethane prepolymer is present in an amount of about 99,8 mass parts or less, relative to the weight of the sealant, more preferably, about 98 mass parts or less, and most preferably, about 85 mass parts or less.

The composition according to the present invention further comprises a silane compound containing at least one hydrolyzable group associated at least with one atom of silicon silane compounds. In addition, the silane compound has hydrocarbonous group associated with the carbon atom through functional communication containing a heteroatom, where the carbon atom is additionally associated, at least one of the silicon atoms having a hydrolyzable group associated with it. The carbon atom that is linked to a functional group such as a silane having at least one hydrolyzable group associated with it, referred to in some systems the item as alpha-carbon atom, and in other systems of nomenclature as 1 carbon atom. For clarity, these compounds will be referred to hereafter as the alpha hydrocarbonsoluble. Gidrolabilna group can be any group on the basis of carbon and hydrogen, which does not affect, to the alpha-hydroconversion operates in the compositions of the present invention, and which results in the stable compositions of the present invention. Stable, as used in this context, means that the composition is not exposed to unacceptable interactions when stored in the environment, protected from humidity, during the six-month period. Unacceptable interaction means that the interaction causes an increase in the viscosity of the composition to such a level that the composition cannot be applied using conventional technologies. Preferably, the viscosity of the composition is not increased by more than 50 percent during the 6-month period, more preferably not more than 30 percent when stored in the container, protected from moisture. In addition, gidrolabilna group may contain one or more heteroatoms in the main chain. Preferably, the main chain is an aliphatic main chain (or easy polyester), such as polyalkylbenzene the primary circuit. Preferred aliphatic main chain represents a C1-10aliphatic hydrocarbons with straight and branched chain, with C2-8aliphatic hydrocarbons with straight and branched chain are the most preferred. From polyalkylbenzene major chains polyoxyalkylene on the basis of tetrahydrofuran, butanediol,butilenica, of propylene oxide and ethylene oxide are preferred, with those based on ethylene oxide, propylene oxide or their mixtures, are even more preferred. Gidrolabilna group binds to the alpha-carbon atom via a functional link, containing the heteroatom. The functional relationship of the heteroatom can be any functional relationship, which is able to bind hidrocarburos group alpha-carbon atom associated with a silanol group, and which does not affect the functioning of alpha-hydroconversion in the compositions of the present invention. Preferably, the functional relationship containing a heteroatom, contains a balance of oxygen, nitrogen and/or sulfur. Preferred functional relationships of the heteroatom include ethers, simple thioethers, secondary, and tertiary amines, carbonyl, carbonyloxy, amido, urethane group, a urea group, and the like. Preferred functional communication containing heteroatom, are urea and urethane. Preferably, at least one of the silicon atoms connection has associated with it two or three hydrolyzable groups. The hydrolyzable group is not in any way limited, and is selected from conventional hydrolyzable groups. Specific examples are a hydrogen atom, atomanlagen, alkoxygroup, alloctype, methoxymethyl group, amino group, aminogroup, acid aminogroup, aminochrome, mercaptopropyl and alkenylacyl. Preferred among them are a hydrogen atom, alkoxygroup, alloctype, ketoxime group, amino group, aminogroup, aminochrome, mercaptopropyl and alkenylacyl. Alkoxygroup is more preferred, with methoxy or ethoxypropan is the most preferred.

Preferably, the alpha hydroconversion corresponds to the formula

where

R1independently represents in each case, a hydrocarbon group which may contain one or more heteroatoms;

R2independently represents in each case hydrolyzable group;

R3independently represents in each case monovalent hydrocarbon;

R4independently represents in each case hydrogen or alkyl;

Z independently represents in each case, the functional relationship containing a heteroatom;

n independently represents in each case an integer from 1 to 3; and

m is about 1 or greater.

R1preferably represents an aliphatic hydrocarbon or simple aliphatic polyester; more preferably, C 1-10aliphatic group with a straight or branched chain or polyalkyleneglycol group; more preferably, C2-8aliphatic group with a straight or branched chain or C2-4polyalkyleneglycol chain, and most preferably, polyalkylbenzene circuit is based on ethylene oxide, propylene oxide or mixtures thereof. The hydrolyzable group represented by R2is not in any way limited, and is selected from conventional hydrolyzable groups. Specific examples are a hydrogen atom, halogen atom, alkoxygroup, alloctype, methoxymethyl group, amino group, aminogroup, acid aminogroup, aminochrome, mercaptopropyl and alkenylacyl. Preferred among them are a hydrogen atom, alkoxygroup, alloctype, ketoxime group, amino group, aminogroup, aminochrome, mercaptopropyl and alkenylacyl. Alkoxygroup is more preferred, with methoxy or ethoxypropan is the most preferred. Preferably, R2independently represents in each case, hydrocarbonate; more preferably, alkyloxy, acyloxy-, amino - and alkenylacyl. Even more preferably, R2represents a C1-10alkyloxy or alkenylacyl and, more preferably, C1-10alkalo is the system of groups. Most preferably, R2represents a C1-3alkyloxy, with methoxy is most preferred. Preferably, R3independently represents in each case alkyl group having 1-20 carbon atoms, aryl group having 6-20 carbon atoms, cycloalkyl group having 5-20 carbon atoms, and aracelio group having 7-20 carbon atoms. More preferably, R3represents methyl, ethyl, tsiklogeksilnogo, phenyl or benzyl group; even more preferably, tsiklogeksilnogo, benzyl, methyl or ethyl group; methyl or ethyl are more preferred, and methyl is most preferred. Z preferably represents oxygen, sulfur, tertiary or secondary amine (N(R4)), the carbonyl functional group corresponding to the formula

X independently represents in each case oxygen, sulfur or N(R4), where R4previously described; and

a independently represents in each case 0 or 1, provided that for each case presents a functional group, the sum of the values of a equal to 1 or 2, and preferably 2. Preferably, Z represents a

X preferably represents O or N(R4. R4preferably represents C1-3alkyl or hydrogen, more preferably methyl or hydrogen. Preferably, m is 2 or more. Preferably, m is 8 or less, more preferably 6 or less, even more preferably 4 or less, and most preferably 3 or less. In the most preferred embodiment, m is 2. Preferably, n is 2 or 3.

Alpha hydrocarbonsoluble can be obtained by means known to specialists in the field of chemistry organic synthesis. In a preferred embodiment, the alpha hydrocarbonsoluble get through interaction of silane compounds having reactive residue on the alpha carbon atom, alpha-silane, with hydrocarbondegrading compound with a functional group that interacts with the functional balance of the silane compound. Functional groups on the two compounds can be any set of functional groups that interact with each other, so that the resulting product combines the silane with hidrocarburos group under reasonable conditions. A pair of functional groups that interact with each other, well known to experts in the field of organic chemistry synthesis. Preferably, the interacting residues are selected so that they p is delaude the condensation reaction with each other. Among the preferred functional groups are primary or secondary amines, thiols, isocyanates, hydroxyl, carboxylic acids, aldehydes, Halogens, halides, epoxypropyl and the like. Preferred are hydroxyl, amines and isocyanates. Preferably, the composition according to the present invention contains a reaction product of one or more alpha-silanes with one or more compounds having hydrocarbonous group, where one of the compounds has an isocyanate functional group and the other is a residue containing an active hydrogen atom, as described previously. The residue containing active hydrogen, represents any residue containing hydrogen which reacts with isocyanate residue. Preferably, the compound containing hydrocarbonous group contains 1 or more functional groups, more preferably 2 or more. Preferably, such compounds contain 8 or less active functional groups, more preferably 6 or less, even more preferably 4 or less, and most preferably 3 or less. The most preferred compounds containing hydrocarbonous group have an average number of functional groups is approximately 2. Preferred compounds containing hydrocarbonous group, correspond to f is rule

where R1and m are as described previously; Y independently represents, in each case, the reactive residue, which interacts with the remainder contained in alpha-silane. Preferably, Y represents halogen, hydroxyl, thiol, primary or secondary amino group of gelegenheid, carboxyl, aldehyde, isocyanate, alkoxy, alkylthiol, epoxypropyl and the like. Preferably, Y represents a hydroxyl, isocyanato, primary or secondary amino.

Alpha-silane is a compound which has a functional residue, which interacts with the functional balance of the compound containing hydrocarbonous group, and a silane group having at least one hydrolyzable residue associated with silane, where two groups are connected through a single carbon atom. Functional groups which may be present on alpha-silane, referred to are those described for compounds containing hydrocarbonous group. Specific functional residue is selected so that the two compounds interact with each other, so hidrocarburos connection and alpha-silane can communicate together through a functional relationship. Preferred alpha-silanes correspond to the formula

where Y, R2, R3, R4and n described earlier.

The obtained alpha hydroconversion can be represented by the formula

where R1, R2, R3, R4, Z, n and m are as previously described. In a preferred embodiment, the alpha hydroconversion corresponds to the formula described above.

R1, R2, R3, R4, X, a, m, and n are as described above. The preferred reaction products of alpha-silane and hydrocarbonaceous compounds include simple dialkoxyphosphinothiolic polyester with urethane endings or simple realconsoleonly polyester with urethane endings, with simple dimethoxymethylsilyl polyester with urethane endings, such as those available from Wacker Silicones under the trade name GENIOSIL and under the designation STP-E10 is the most preferred.

Alpha hydrocarbonsoluble present in the compositions of the present invention in an amount sufficient to improve the adhesion and durability of the binding composition to the substrates described herein. Preferably, the adhesion and durability of the links meet the preferred specifications, as described here. If their use is raised too little, the composition does not demonstrate long-lasting adhesion to the surfaces of the substrates. If they are used too much, then the performance characteristics of adhesion can be harmful influence. Preferably, the alpha hydrocarbonsoluble present in the compositions of the present invention in an amount of about 1 part of a mass or more relative to the weight of the composition, and more preferably, about 3 mass parts or more. Preferably, the alpha hydrocarbonsoluble present in the compositions of the present invention in an amount of about 10 mass parts or less relative to the weight of the composition, and more preferably about 8 mass parts or less. In a preferred embodiment, the reaction products of alpha-silane and hydrocarbonaceous compounds are obtained by known condensation reactions between alpha-silane and hydrocarbondegrading connection, which is well known in this field, see, for example, Chiao, U.S. patent No. 5623044 from column 5, line 36 to column 6, line 12.

In those versions of the implementation, where the composition is used for bonding glass or plastic coated with substrates coated with coatings or paints, including acid-resistant paints, it is desirable to have the silane is present in some form. The silane can be mixed with what reprimere. In another embodiment, the silane is a silane which has an active hydrogen atom reactive with respect to isocyanate. Preferably, the silane is mercaptomerin or aminosilane, and more preferably, is mercaptotriazoles or aminotriazole. In one embodiment, the implementation of a silane having an active hydrogen atom reactive with respect to isocyanate residues can interact with the end isocyanate residues prepolymer. Such reaction products are described in U.S. patent No. 4374237 and 4345053, relevant parts of which are included as references. In another embodiment, the silane having the rest of chemically active hydrogen reactive with respect to isocyanate residue, can interact in the main chain prepolymer through such interaction of silane with the source material while obtaining prepolymer. The method of producing prepolymers containing silane in the main chain, are described in U.S. patent No. 4625012, relevant parts of which are included as references. Such a silane having the remains of active hydrogen, can interact with the polyisocyanate with the formation of the adduct, which is mixed with prepolymer interacts with polyurethane prepolymer the m or interacts with a polyisocyanate and a compound having more than one residue of a reactive toward isocyanate residue, such as those described in Chiao, U.S. patent No. 5623044, which is included as a reference. The number present silane constitutes such an amount that improves the adhesion of the adhesive to the surface of the substrate, such as a painted surface or the surface of glass or plastic, without the need for a primer. The number present silane is preferably about 0.1 mass part or more relative to the weight of the sealant, and most preferably, about 0.5 mass part or more. The amount of silane is preferably about 10 mass parts or more, or less, and most preferably, approximately a 2.0 mass parts or less.

The reaction for obtaining prepolymer and adduct may be carried out in the presence of a urethane catalyst. Examples thereof include salts of divalent tin and carboxylic acids, such as octoate tin, tin oleate, tin acetate and tin laurate. Also dialkylaminoalkyl, such as dibutyltindilaurate and dibutylaminoethanol known in this area as urethane catalysts as tertiary amines and mercaptide tin. Preferably, the reaction for obtaining prepolymer catalyzed by Octo is that tin. The amount used of the catalyst generally is in the range between about 0.005 and about 5 mass parts from the catalyzed mixture depending on the nature of the isocyanate.

The adhesive also contains a catalyst which catalyzes the reaction of isocyanate residues with water or with a compound containing active hydrogen. Such compounds are well known in this field. The catalyst may be any catalyst known to the person skilled in the art, for the reaction of isocyanate residues with water or with compounds containing active hydrogen. Among the preferred catalysts are ORGANOTIN compounds, alkanoate metals and tertiary amines, such as simple demoralizovannaya esters. Included in the useful catalysts are ORGANOTIN compounds, such as oxides alkalolu, alkanoate tin, dialkylaminoalkyl and mercaptide tin. Alkanoate divalent tin include octoate tin. Oxides alkalolu include oxides dialkylamino, such as dibutylamine and their derivatives. ORGANOTIN catalyst preferably is dialkylaminoalkyl or dialkylaminomethyl. Dialkylaminoalkyl preferably corresponds to the formula (R5(O)CO)2-Sn-(R5)2, where the R 5independently represents in each case With1-10alkyl, preferably C1-3alkyl and most preferably methyl. Dialkylaminoalkyl with a lower total content of carbon atoms are preferred because they are more active catalysts in the compositions of the present invention. Preferred dialkyldithiocarbamate include 1,1-dimethylglutaric, 1,1-dibutylaminoethanol and 1,1-dymethylreftalate. ORGANOTIN catalyst is present in an amount of about 60 ppm or more relative to the weight of the composition, and more preferably 120 ppm or more. ORGANOTIN catalyst is present in an amount of about 1.0 part or less relative to the weight of the composition, more preferably, of 0.5 mass parts or less, and most preferably 0.1 mass parts or less.

Other suitable catalysts include tertiary amines, such as simple demoralizingly ether, a simple di((dialkylamino)alkilany) ether, simple bis-(2-dimethylaminoethyl) ether, triethylenediamine, pentamethyldiethylenetriamine, N,N-dimethylcyclohexylamine, N,N-dimethylpiperazine 4-methoxyethylmercury, N-methylmorpholine, N-ethylmorpholine and mixtures thereof, and alkanoate metals, such as octoate vis the Uta or neodecanoate bismuth. Preferred simple demoralizingly ether is a simple disorganizational ether. Preferred simple di((dialkylamino)alkilany) ether is a simple (di-(2-(3,5-dimethylmorpholine)ethyl) ether). Tertiary amines or alkanoate metals, such as simple demoralizingly ether or a simple di((dialkylamino)alkilany) ether, are preferably used in a quantity relative to the weight of the composition, about 0.01 to mass part or more, more preferably approximately 0.05 mass part or more, more preferably, about 0.1 mass part or more, most preferably, approximately 0.2 mass part or more and about to 2.0 mass parts or less, more preferably, around 1.75 mass parts or less, even more preferably, about 1.0 mass parts or less, and most preferably, about 0.4 mass parts or less.

The composition according to the present invention further comprises one or more catalysts which catalyze the reaction of condensation of silanol. In most embodiments the catalyst for the reaction of isocyanate and water, or compounds containing active hydrogen, will catalyze the reaction of condensation of silanol. In some circumstances, it may be desirable is the use of a second catalyst system for condensing silanol. Typically, the catalyst for the condensation of silanol is an acid, base or salt of the metal. Catalysts suitable for the condensation reaction of silanol, well known in this area, see Wakabayashi, U.S. patent No. 4910255, see column 12, line 55, to column 13 line 51, and Mahdi et al., U.S. patent No. 6828643, from column 8, line 37 to column 9, line 27, both included as references. Preferred catalysts include, for example, ORGANOTIN compounds, acids, bases, connections acid complex phosphate esters, reaction products between connections acid complex phosphate esters, amines, saturated or unsaturated polyvalent carboxylic acids or their acid anhydrides and taytantoonpanosta connection. Illustrative organic titanates are complex titanate esters, such as tetrabutyltin, tetraisopalmitate and triethanolaminato. Among the preferred compounds of tin, suitable for condensation of silanol are salt dialkylamino(IV) and organic carboxylic acids, such as dibutylaminoethanol, dimethylglutaric, dibutyltindilaurate, dibutylamine, dioctylmaleate or dioctylmaleate; tin carboxylates, such as achilat tin or tin naphthenate; the reaction products of dialkanolamides and complex ester is phthalic acid or alkadienes; dibutylbarbituric; dialkyldimethylammonium, such as dibutyltindilaurate (also commonly referred to as dibutylaminoethanol); dialkylaminoalkyl, such as dibutylamine and dibutylaminoethanol; salts of tin(II) and organic carboxylic acids such as tin(II)diacetate, tin(II)dioctanoyl, tin(II)diethylhexanoate or tin(II)dilaurate, activit tin; dialkylamino(IV)dihalogenide, such as dimethylglutaric; and salts of tin(II) and carboxylic acids, such as octoate tin, tin oleate, acetate, tin or tin laurate. These catalysts condensation silanol can be used individually or in combinations of 2 or more. The preferred catalysts are dialkylaminoalkyl, dialkylaminoalkyl, dialkylamino-bis(acetylacetonates), the reaction products of dialkylated and esters of phthalic acid or of almandine, halides dialkylamino and oxides dialkylamino. More preferred catalysts are dibutyltindilaurate, dimethylglutaric, dibutylamine, dibutylaminoethanol, activit tin, tin naphthenate, the reaction products of dibutylated and esters of phthalic acid or pentanedione, dibutyltindilaurate, dibutylamine, dimethylvaleric and the like. Used the number rolled is atora in the compositions represents a number, which facilitates curing of the composition, without causing degradation of the composition after curing. The amount of catalyst in the composition is preferably about 0.01 to mass part or more, more preferably, about 0.1 mass part or more, and most preferably, approximately 0.2 mass part or more, and preferably, about 5 mass parts or less, even more preferably, about 1.0 mass parts or less, and most preferably, about 0.4 mass parts or less.

For preparation of compositions according to the present invention one or more prepolymers and selectarray compounds, if present, are combined, preferably with fillers and additives known in the field for use in elastomeric compositions. By adding such materials may be modified physical properties such as viscosity, flow rate, sagging, and the like. However, to prevent premature hydrolysis of the humidity-sensitive groups of the polymer, the filler is preferably thoroughly dried before mixing with him. Exemplary materials fillers and additives include such materials as carbon black, titanium dioxide, clay, calcium carbonate, various kinds of surface-modificirovannogo silicon, ultraviolet stabilizers, antioxidants and the like. This list, however, is not exhaustive and is provided only as an illustration. The fillers are preferably present in an amount of about 14 mass parts or more, relative to the amount of sealant, and more preferably, about 25 mass parts or more. The fillers are preferably present in an amount of about 70 mass parts or less, relative to the amount of sealant, more preferably 50 mass parts or less, and still more preferably 35 mass parts or less.

The composition of the present invention also preferably contains one or more plasticizers or solvents to modify the rheological properties to desired consistency. Such materials must not contain water, must be inert towards isocyanate groups and is compatible with the polymer. Such material may be added to the reaction mixtures to obtain prepolymer or to the mixture to obtain the final sealant composition, but preferably is added to the reaction mixtures to obtain prepolymer and adduct, so that such mixtures are easier to mix and perform manipulations with them. Suitable for use plasticizers and solvents are well known in this field the year and include dioctylphthalate, dibutyl phthalate, partially hydrogenated terpene commercially available as "HB-40", trioctylphosphine, epoxy plasticizers, toluensulfonyl, chlorinated paraffin wax, esters of adipic acid, castor oil, xylene, 1-methyl-2-pyrrolidine and toluene. The amount of plasticizer constitutes such an amount that is sufficient to obtain the desired rheological properties and dispersion of the components in the sealant composition. Preferably, the plasticizer is present in the compositions of the present invention in an amount of about 0 mass part or more, more preferably, about 5 mass parts or more, and most preferably, about 15 mass parts or more. The plasticizer is preferably present in an amount of about 45 mass parts or less, and about 40 mass parts or less, and most preferably, about 25 mass parts or less.

In a preferred embodiment, the composition according to the present invention contains a light. You can use any light that facilitates composition maintaining a durable binding with the substrate for a considerable part of the life of the structure with which it is associated. The preferred light stabilizers represent light is based on the difficult amines. Light stabilizers based on difficult amines generally include those available from Ciba Geigy, such as TINUVIN™ 144 n-butyl-(3,5-di-tert-butyl-4-hydroxybenzyl)bis-(1,2,2,6-pentamethyl-4-piperidinyl)malonate; TINUVIN™ 622 dimethylsuccinyl polymer with 4-hydroxy-2,2,6,6,-tetramethyl-1-piperidinemethanol; TINUVIN™ 77 bis(2,2,6,6-tetramethyl-4-piperidinyl)sebacate; TINUVIN™ 1,2,3 bis(1-octyloxy-2,2,6,6-tetramethyl-4-piperidinyl)sebacate; TINUVIN™ 765 bis(1,2,2,6,6-pentamethyl-4-piperidinyl)sebacate; CHIMASSORB™ 944 poly[[6-[1,1,3,3-TETRAMETHYLBUTYL)amino]-1,3,5-triazine-2,4-diyl][(2,2,6,6-tetramethyl-4-piperidinyl)imino]-1,6-hexanediol[(2,2,6-tetramethyl-4-piperidinyl)imino]]) and available from Cytec, CYASORB™ UV-500; bis(2,2,6,6-tetramethyl-4-piperidinyloxy) ester 1,5-dioxaspiro(5,5)undecane 3,3-dicarboxylic acid; CYASORB™ UV-3581; 3-dodecyl-1-(2,2,6,6-tetramethyl-4-piperidinylidene-2,5-dione) and CYASORB™ UV-3346, poly[(6-morpholino-s-triazine-2,4-diyl)[2,2,6,6-tetramethyl-4-piperidyl)imino]hexamethylene [(2,2,6,6-tetramethyl-4-piperidyl)imino]]. The preferred light stabilizers based on difficult amines include TINUVIN™ 1,2,3 bis(1-octyloxy-2,2,6,6-tetramethyl-4-piperidinyl)sebacate, TINUVIN™ 765 bis(1,2,2,6,6-pentamethyl-4-piperidinyl)sebacate and methyl 1,2,2,6,6-pentamethyl-4-piperidineacetate. Can be used a sufficient number of sitosterolemia to improve the durability of communication with the substrate. Suppose the equipment, light is used in an amount of about 0.1 mass part or more, relative to the weight of the composition of the present invention, more preferably of 0.2 mass part or more, and most preferably, about 0.3 mass part or more. Preferably, the number of sitosterolemia present in the compositions of the present invention is approximately 3 mass parts or less, more preferably, about 2 mass parts or less, and most preferably about 1 mass parts or less.

In another preferred embodiment, the composition according to the present invention further comprises an ultraviolet light absorber. You can use any absorber of ultraviolet radiation, which improves the durability of the connection of the composition of the present invention with the substrate. Preferred absorbers of UV light include benzophenone and benzotriazole. Preferred UV light absorbers include absorber from Ciba Geigy, such as TINUVIN™ P; 2-(2'-hydroxy-5'-were)benzotriazole; TINUVIN™ 326 2-(5-chloro-2H-benzotriazol-2-yl)-6-(1,1-dimethylethyl)-4-METHYLPHENOL; TINUVINTM213 poly(oxy-1,2-ethandiyl), (α,(3-(3-(2H-benzotriazol-2-yl)-5-(1,1-dimethylethyl)-4-hydroxyphenyl)-1-oxopropyl)-ω-hydroxy and poly(oxy-1,2-ethandiyl), (α,(3-(3-(AH-benzotriazol-2-yl)-5-(1,1-DIMET later)-4-hydroxyphenyl)-1-oxopropyl)-ω-(α,(3-(3-(2H-benzotriazol-2-yl)-5-(1,1-dimethylethyl)-4-hydroxyphenyl)-1-oxopropyl); TINUVIN™ 327 2-(3,5-di-tert-butyl-2-hydroxyphenol)-5-chlorobenzotriazole; TINUVIN™ 571 2-(2H-benzotriazol-2-yl)-6-dodecyl-4-METHYLPHENOL, branched and linear; TINUVIN™ 328 2-(2H-benzotriazol-2-yl)-4,6-bis(1,1-dimethylpropyl)phenol, and from Cytec, such as CYASORB™ UV-9; 2-hydroxy-4-methoxybenzophenone; CYASORB™ UV-24; 2,2'-dihydroxy-4-methoxybenzophenone; CYASORB™ UV-1164; 2-[4,6-bis(2,4-dimetilfenil)-1,3,5-triazine-2-yl]-5-(octyloxy)phenol; CYASORB™ UV-2337; 2-(2'-hydroxy-3'-5'-di-tert-amylphenol)benzotriazole; CYASORB™ UV-2908; complex hexadecylamine ester of 3,5-di-tert-butyl-4-hydroxybenzoic acid and CYASORB™ UV-5337; 2-(2'-hydroxy-3',5'-di-tert-butylphenyl)-5-chlorobenzotriazole; CYASORB™ UV-531; 2-hydroxy-4-n-acetoxybenzoic and CYASORB™ UV-3638; 2,2-(1,4-phenylene)bis[4H-3,1-benzoxazin-4-one]. Preferred UV light absorbers include CYASORB™ UV-531; 2-hydroxy-4-n-acetoxybenzoic TINUVIN™ 571 and 2-(2H-benzotriazol-2-yl)-6-dodecyl-4-METHYLPHENOL, branched and linear. Preferably, the UV light absorber is used in sufficient quantity to improve the durability of the connection of the composition of the present invention with the substrate. Preferably, the UV inhibitor is used in an amount of about 0.1 mass part or more, relative to the weight of the composition of the present invention, more preferably, approximately 0.2 mass part or more, and most preferably, about 0.3 mass part or more. Pre is respectfully, inhibitor UV light is used in an amount of about 3 mass parts or less, relative to the weight of the composition of the present invention, more preferably, about 2 mass parts or less, and most preferably about 1 mass parts or less.

In another preferred embodiment, the composition according to the present invention further comprises a thermo stabilizer. You can use any thermo stabilizer that improves the durability of the connection of the adhesive with the substrate. Preferred stabilizers include fosfororganichyeskii compounds with the following General structure:

P-(OR6)3.

R6can independently be an alkyl, aryl or alkaryl and may contain heteroatoms, such as oxygen and phosphorus.

Preferred heat stabilizers include poly(dipropyleneglycol)phenylphosphate (available from Dover Chemical Corporation under the trade name and designation DOVERPHOS 12), tetradecyl-4,4'-isopropylidenediphenol (available from Dover Chemical Corporation under the trade name and designation DOVERPHOS 675), disneylandhotel (available from Dover Chemical Corporation under the trade name and designation DOVERPHOS 4) and phenoldisulfonic (available from Dover Chemical Corporation under the trade name and designation DOVERPHOS 7). Preferred is entrusted, thermo stabilizer is used in sufficient quantity to improve the durability of the connection of the composition to the substrate. Preferably, thermo stabilizer is used in an amount of about 0.1 mass part or more, relative to the weight of the composition of adhesive or transparent primer, more preferably, approximately 0.2 mass part or more, and most preferably, about 0.3 mass part or more. Preferably, thermo stabilizer is used in an amount of about 3 mass parts or less, relative to the weight of the composition of the present invention, more preferably, about 2 mass parts or less, and most preferably about 1 mass parts or less.

The composition according to the present invention can be prepared by mixing the components together using means well known in the field. Typically, the components are mixed in an appropriate mixer. Such mixing is preferably carried out in an inert atmosphere and in the absence of atmospheric moisture to prevent premature interaction. May be preferential addition of any plasticizer to the reaction mixture to obtain isocyanatobenzene prepolymer, so that the mixture can be easily mixed and subjected to various manipulation is the third. Alternatively, the plasticizer may be added during mixing of all components. After preparation of the composition it is Packed in an appropriate container, so that it is protected from atmospheric moisture. Contact with atmospheric humidity can lead to premature cross-linking of prepolymer used in the compositions of the present invention.

The composition of the present invention is used to link together the porous and non-porous substrates. The composition is applied to the first substrate, and then composition on the first substrate is brought into contact with the second substrate. Thereafter, the composition is exposed to curing conditions. In a preferred embodiment, one of the substrates is a glass or transparent plastic, covered with abrasion-resistant coating, and the other substrate is a plastic, metal, fiberglass or composite substrate, which optionally may be painted or have the floor. Plastic coated abrasive-resistant coating may be any plastic, which is transparent, such as polycarbonate, acrylic, hydrogenated polystyrene or block copolymers of hydrogenated styrene paired with a diene, having a styrene content greater than 50 percent. The coating can include SEB is any floor, which is abrasion-resistant, such as a polysiloxane coating. Preferably, the pigmented coating has an additive that blocks ultraviolet light. Preferably, the window is made of glass or plastic and the coating has a matte finish, which is located in the area that you want to get in contact with the adhesive, to prevent UV light from reaching the adhesive. This is commonly referred to as the cement. For glass coating is an inorganic enamel or organic coating.

In a preferred embodiment, the composition according to the present invention is applied to the surface of glass or plastic coated, along the side of the glass or plastic coated, which should contact structure. Thereafter, the composition is brought into contact with the second substrate so that the composition is located between the glass or plastic coated and the second substrate. The song gets an opportunity to cure by forming a durable bond between the glass or plastic coating and substrate. This method is particularly effective for substrates painted with acid resistant paint. In a preferred embodiment, a surface on which is applied a composition cleaned before application; see, for example, U.S. patent No. 4525511, 3707521 and 3779794. Typically, the compositions of astasia invention is applied when the ambient temperature in the presence of atmospheric moisture. Exposure to atmospheric moisture is sufficient to cause curing of the composition. Curing may optionally be accelerated by application of heat to the curable composition through a convection heating, or microwave heating.

In another embodiment, the composition may be applied to the surface of another substrate, and then brought in contact with glass or plastic coated, as described. The compositions of the present invention are particularly effective when linking with acid-resistant paints, such as coating Dupont GEN™ IV, which is a modified silane acrylamido floor, malminkartano coatings, two part polyurethane coatings and acid epoxy coating.

Working time is the period of time after application to the substrate when the composition is sufficiently adhesive to be applied to the surface of the second substrate for bonding with the second substrate. Preferably, the composition according to the present invention is prepared by providing a working time of 6 minutes or more, and more preferably 10 minutes or more. Preferably, the working time is 15 minutes or less, and more preferably 12 minutes or less.

At the mention of polyurethane is prepolymers average number of isocyanate functional groups is determined in accordance with br, U.S. patent No. 5922809, from column 12, line 65, to column 13, line 26, which is included as a reference. Molecular weight, as described herein, are determined in accordance with the following procedure, described in br, U.S. patent No. 5922809, column 12, line 50 to 64, which is included as a reference. Mass parts relate to compositions, which are generally 100 parts.

Performance characteristics of adhesion of the adhesive evaluated by testing the Quick Knife Adhesion (QKA). The study QKA cushion adhesive 6.3 mm (width) × 6.3 mm (height) × 100 mm (length) was placed on the test substrate, and the Assembly is cured for a specific time at 23°C and 50% RH (relative humidity). Then cured cushion cut using a razor blade at a 45°angle, while pulling back end of the roller at an angle of 180° to the substrate. The adhesion level is estimated as adhesive failure (AF) and/or cohesive failure (CF). In the case of AF cured roller can be separated from the substrate, and when CF the Department is carried out only within the cushion adhesive to the cutting knife. The adhesion strength is often characterized as a shear test at splices. Triangular cushion composition of a width of approximately 6.3 mm and a height of 8 mm is applied along the width of the glass substrate (25 mm × 75 mm) and approximately 6 mm to 12 mm from heaven. The second colored substrate is directly pressed against the composition with a final height of 6.3 mm for the composition between them. Then the sample structure allow curing at 23°C and 50 percent relative humidity for 7 days, unless otherwise stated. Then the sample is pulled to the right on the break or after additional exposures to the environment with a speed of 1 inch/minute (25 mm/min using Instron Tester. Recorded load at break of the sample. Often used in the camera Weather-O-Meter (WOM) for acceleration tests the ability of the sample to transfer the impact of environmental factors. Here are the conditions SAE J1885, if not stated otherwise.

Mass parts, as used here, refers to 100 mass parts of the composition, which is mentioned specifically. In most cases, this refers to the composition of the adhesive of the present invention.

Specific embodiments of the inventions

The following examples are included for illustrative purposes only and are not intended to limit the scope of the present invention. Unless approved otherwise, all parts and percentages are mass.

Example 1

Politicaleconomy prepolymer prepared by thorough mixing 221.1 g of polyoxypropylene (VORANOL™ 220-056, polyol, having an average molecular the popular weight 2000), 294,6 g polyoxypropylene (VORANOL™ 232-236, polyol, having an average molecular weight of 4500, VORANOL™ is a trademark of Dow Chemical Company) and 20.0 g alkylphenate plasticizer in a 2-liter reactor resins, equipped with a mechanical stirrer, inlet adapter for nitrogen and a thermometer. Nitrogen purging, the mixture is heated to 54°C. 92,90 g melted diphenylmethan-4,4'-diisocyanate is added to the mixture and mix thoroughly. Then give 0.05 g of octoate tin and the mixture is stirred for one hour. Finally, add 288,8 g alkylphenate plasticizer, 0.01 g MULTIFLOW™ (available from Solutia) and 8.9 g of diethylmalonate to the mixture, which was then stirred for 15 minutes. After that add 13.3 g of bis-(3-triethoxysilylpropyl)amine and the mixture is stirred for two hours. Then add 60,4 g DESMODUR™ N-3300 (resin with aliphatic polyisocyanate based hexamethylenediisocyanate supplied by Bayer USA Inc.) and the mixture is stirred for 15 minutes. The resulting prepolymer has an isocyanate content of 2.54 percent mass and viscosity 10800 JV (10,8 N·sec/square meter) at 25°C.

Example 2

br983.7 g prepolymer example 1, 80 g simple dimethoxymethylsilyl polyester with urethane endings, GENOSIL™ STP-E10, available from Wacker Silicones, and 4,70 g simple disorganizational ether is stirred in a planetary shift is the Ross at a speed of 3 in vacuum for 10 minutes. The stirring is stopped and the vacuum destroy using nitrogen. To the mixture is added 40 g of calcium carbonate and 451,2 g carbon black, they both dried and cooled to room temperature before use. The mixture is stirred for 2 minutes without vacuum at speed 2 for dehydration fillers and then stirred at speed 3 for 15 minutes in vacuum. The mixture soskrebajut, and then add 9,76 g WESTON™ TNPP, available from Crompton Corporation, 12.8 g TINUVIN™ 571 2-(2H-benzotriazol-2-yl)-6-dodecyl-4-METHYLPHENOL, linear and branched, and 12.8 g of TINUVIN™ 765 and a mixture of bis(1,2,6,6-pentamethyl-4-piperidinyl)sebacate and methyl 1,2,2,6,6-pentamethyl-4-piperidineacetate, both available from CIBA GEIGY; and the resulting mixture is stirred for 10 minutes at speed 3 in a vacuum. The resulting mixture was Packed in an air tight tube. Performance characteristics of adhesion of the resulting composition is assessed using QKA and shear strength tests at the splices.

The composition of example 2 is investigated with the substrate in the form of a metal sample for testing, with a coating of acid-resistant painting systems for cars. Metal samples for testing with elecrodeposition floors cover the main floor Dupont GEN IV™ ES (~25 μm) and a transparent cover (~25 μm) and baked under normal conditions the s baking for 29 minutes at 285°F (141°C). These samples for test ready for test after 3-4 hours after baking. Cushions for QKA from example 2 is put on these samples for testing with a coating of GEN IV™ ES. One sample is kept for 7 days at 23°C and the conditions of 50% relative humidity and carry out the QKA test. Type of failure is a 100% cohesive failure. The second sample is stored for 7 days at 23°C and under conditions of 50% relative humidity, and then 14 days at 38°C and under conditions of 100% relative humidity. The result QKA for the second sample represents 100 percent cohesive failure.

The composition of example 2 also examined to glass substrates. Two sets of samples QKA from example 2 receive for each of the following three types of glass samples for testing: 1) glass samples for testing with the bismuth-zinc ceramic enamel on how to bend under the action of gravity, 2) glass samples for tests with zinc ceramic enamel on how to bend under the action of gravity and 3) glass samples for testing from ordinary float glass. Each glass sample for testing pre-impregnated with isopropanol using does not contain free fibers gauze before posting cushion adhesive of example 2. The first set is brastow for QKA exhibit for the conditions of 23°C and 50% relative humidity for 7 days, the second set of samples QKA exhibit for the conditions of 23°C and 50% relative humidity for 7 days, and then for the conditions of 38°C and 100% relative humidity for 14 days. After this exercise QKA and see 100% cohesive fracture in all six samples. Additional samples for QKA prepared as described above, the glass samples for testing with the bismuth-zinc enamel, which are pre-primed with a transparent primer for glass BEATSEAL™ 43518 and sutomiscica primer for glass BEATSEAL™ 43520A (both available from Dow Chemical Company). All samples utverjdayut at 23°C and 50% relative humidity for 7 days. After that, these samples are divided into 2 sets. The first set of samples immersed in water at 50°C for 29, 60 and 90 days. The second set of samples stored in an oven at 90°C for 32, 60 and 90 days. All samples from the first set demonstrate 100% cohesive fracture after testing QKA. All samples from the second set demonstrate 100% cohesive fracture after testing QKA except that the samples from 90 days to demonstrate 90 and 85 percent cohesive failure at 10 and 15 per cent of the adhesive destruction (destruction adhesive connection with the substrate).

Samples for testing the shear strength at the connection wahlestedt of example 2 prepared using metallic test specimens with coating systems coating GEN IV™ ES, described above, and a glass of samples for testing. There are two types of glass samples for testing. One of them has a coating of enamel type zinc, and the second enamel type bismuth-zinc. Both get on how to bend under the action of gravity, as described above. Glass samples for testing coated with ceramic enamel impregnated with isopropanol, and painted test pieces impregnated with naphtha before drawing the sample for testing the shear strength at the splices.

After the preparation of samples for testing the shear strength at the splices in accordance with the procedure described previously, they are exposed to several conditions: condition (1) 7 days exposure at 23°C and 50% relative humidity, the condition (2) 7 days of exposure at 23°C and 50% relative humidity, and then 14 days of exposure at 38°C and 100% relative humidity, and the condition (3) 7 days exposure at 23°C and 50% relative humidity, and then 2000 hours of exposure in the weather chamber under conditions SAE J1885. After exposure to these conditions on the samples shall test the shear strength at the splices. For sample, for testing the shear strength at the splices, the BL is reattaching the sample for testing, painted GEN IV™ ES, and for the glass sample for testing with zinc enamel, tensile strength, when tested for shear strength at the splices equal to 570 psi (3,93 MPa) at 100% cohesive fracture after conditions 1 and 549 psi (3,79 MPa) at 100% cohesive fracture after conditions 2. For sample, for testing the shear strength at the splices using a sample for testing, painted GEN IV™ ES, and glass sample for testing with the bismuth-zinc enamel tensile strength, when tested for shear strength at the splices is 551 psi (3,80 MPa) with 100% cohesion failure conditions 1, 564 psi (3,89 MPa) with 100 percent cohesive destruction after conditions 2 and 455 psi (3,14 MPa) with 100 percent cohesive destruction after 3 conditions.

1. Composition to obtain a sealant for bonding surfaces without priming with glass or plastic, containing
(1) one or more urethane prepolymers having isocyanate residues, the average number of functional groups of at least 2.0 and an average molecular weight of at least 2000;
(2) a catalytic amount of one or more compounds which catalyze the reaction of isocyanate residues in the Oh or connection, containing active hydrogen; and
(3) one or more alpha-hydrocarbonsoluble compounds, where alpha hydroconversion corresponds to the formula

where R1represents a C1-C10aliphatic group with straight and branched chain or2-C4polyalkyleneglycol chain;
R2independently in each instance selected from hydrogen atoms, halogen, alkoxygroup, alloctype, ketoxime group, amino group, aminogroup, acid amidopropyl, aminochrome, mercaptopropyl and alkenylacyl; preferably from hydrogen atoms, alkoxygroup, alloctype, ketoxime group, amino group, aminogroup, aminochrome, mercaptopropyl and alkenylacyl;
R3independently represents in each case monovalent hydrocarbon;
R4independently represents in each case With1-3alkyl or hydrogen;
Z independently represents in each case, the functional relationship containing a heteroatom;
n independently represents in each case an integer from 1 to 3 and
m is about 1 or greater.

2. The composition according to claim 1, where the heteroatom containing functional relationship, Z, contains the remainder of the oxygen, nitrogen and/or sulfur.

3. The composition according to claim 1, where the heteroatom containing functional relationship, Z, who will win group a simple ester, a group of simple tiefer, secondary or tertiary amine, carbonyl, carbonyloxy, amido, urethane group or a urea group.

4. The composition according to claim 1, where one or more urethane prepolymers having isocyanate residues, has an average number of isocyanate functional groups to at least 2 and not more than 4.

5. The composition according to claim 1, where the urethane prepolymer further comprises a silane functional group or the composition further comprises a compound or polymer containing silane residue.

6. The composition according to claim 1, containing
(1) from about 40 to about 80 parts by weight or less relative to the weight of the composition of one or more urethane prepolymers;
(2) from about 60 million-1to roughly 2.0 parts by weight, based on the weight of the composition, of one or more compounds which catalyze the reaction of isocyanate residues with water or with a compound containing active hydrogen; and
(3) from about 1 to about 10 parts by weight of one or more compounds alpha-hydroconversion.

7. The composition according to claim 6, which further comprises a catalytic amount of one or more compounds which catalyze the condensation of silanol, which differ from (2).

8. The method of bonding glass or plastic, coated with an abrasive-resistant coating to the substrate, etc coating composition according to any one of claims 1 to 7 on the surface of glass or plastic with a coating or on the surface of the substrate;
the bringing into contact of glass or plastic with a coating and the substrate so that the composition is located between the glass or plastic coating and the substrate; curing the composition to bind the glass or plastic coated with a substrate.

9. The method of claim 8, where the surface is glass or plastic coated, with which is associated the type of adhesive has a ceramic cement, applied to the surface, and the surface of the substrate has on her floor.

10. The method according to claim 9, where the surface is glass or plastic coated and the surface of the substrate with the coating does not primed.



 

Same patents:

FIELD: chemistry.

SUBSTANCE: method of gluing involves processing the surfaces to be glued, applying the glue, pressing the components together and solidification of the glue. The glued surfaces are processed through external heating of the glued components until formation of a 0.5-2.0 mm deep coked layer. The glue joint works at temperature conditions at which material of one or both of the components undergoes thermal decomposition.

EFFECT: method improves adhesion characteristics of gluing carbon fibre reinforced plastic, as well as other composites with heat-resistant filler, increases reliability of operation, particularly glued heat shielding of sockets and reduces their weight.

1 tbl, 2 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to woodworking. Proposed method comprises pressing the stack of two or more boards wherein every board has surface layer and base layer. Surface layer side stays in contact with base layer side. Aforesaid sides in contact have fast-curing glue arranged there between that comprises(a) emulsion polymer selected from the group consisting of latex of butadiene-styrene rubber, latex of modified butadiene-styrene rubber, polyvinyl acetate, ethylene vinyl acetate and combination thereof, and (b) cross-linking compound. Pressing consist in application of uniform pressure to the stack, perpendicular to its surface, at ambient temperature for time equal to, at least 0.1 min, without hot pressing.

EFFECT: pressing of wood lamina materials at ambient temperature using glues not containing formaldehydes.

19 cl, 12 ex, 3 tbl, 3 dwg

FIELD: chemistry.

SUBSTANCE: invention can be used in rubber industry to make rubber-metal articles, particularly water-resistant articles used at high temperatures (up to 90°C). The invention relates to a method of gluing rubber to metal through a cold curing method, which involves applying a layer of glue onto a processed metal surface. Rubber is glued to the metal using a ternary adhesive composition: a first layer of Chemosil 211 glue is applied onto a processed metal surface and dried, a second layer of Chemosil 221 or Chemosil 222 glue is applied on the first layer and dried, and two layers of 88 KR glue are applied on each processed metal and rubber surfaces, drying each of the layers and then gluing the surfaces.

EFFECT: higher bonding strength of polar raw rubber-based rubber with a metal alloy while maintaining high adhesiveness and adhesion strength when the article is used in water at high temperatures.

2 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a method of gluing vulcanised rubber to each other and can be used in rubber industry. The method of gluing different types of vulcanised rubber to each other involves application of polychloroprene rubber based glue onto vulcanised rubber surfaces to be glued and then bringing the surfaces into contact. The base of the polychloroprene glue used is nairit NT or nairit DP combined with butyl phenolformaldehyde resin in 88NT or 88SA adhesive. Before application onto the surface, the adhesive is mixed with a trichloroethylphosphate or trichloropropylphosphate modifier in amount of 0.05-2.0 pts. wt per 100 pts. wt of the adhesive, and after application, the adhesive film is dried at room temperature for 1-2 minutes and the surfaces to be glued are brought into contact under a load for 24 hours.

EFFECT: increased strength of the glue joint when gluing vulcanised rubber and simplification of the gluing process.

2 tbl, 2 ex

FIELD: chemistry.

SUBSTANCE: method of gluing vulcanised rubber of the same type to each other involves depositing glue based on polychloroprene rubber on the surfaces to be glued and subsequently bringing the surfaces into contact. 88NT or 88SA glue based on polychloroprene rubber nairite NT or nairite DP combined with butylphenol formaldehyde resin is used. Before depositing the glue onto the surface, a modifier which is ortho-phenylenediamine is added to the glue in amount of 0.5-3.0 pts. wt per 100 pts. wt of glue, and after deposition, the glue film is dried at room temperature for 1-2 minutes. The glued surfaces are brought into contact under a load for 24 hours. Rubber based on SKI-3, SKEPT-40, SKN-18 and neoprene is glued.

EFFECT: increased strength of the glue joint when gluing vulcanised rubber and simplification of the gluing process.

2 tbl, 2 ex

FIELD: chemistry.

SUBSTANCE: method of bonding vulcanised rubber of the same type to each other involves depositing glue based on polychloroprene rubber on the surfaces to be glued together, as well as 88NT or 88SA glue based on polychloroprene rubber nairite NT or nairite DP combined with butylphenol formaldehyde resin. Before depositing onto the surface, a modifier which is paraoxydiphenylamine is added to the glue in amount of 0.3-4.0 pts. wt per 100 pts. wt of glue, and after depositing, the glue film is dried at room temperature for 1-2 minutes, and the surfaces are brought into contact under a load for 24 hours. Rubber based on SKI-3, SKEPT-40, SKN-18M and neoprene AS is glued together.

EFFECT: increased strength of the glued joint when gluing vulcanised rubber of the same type, simplification of the gluing process.

2 tbl, 2 ex

FIELD: technological processes.

SUBSTANCE: synthetic glue is applied on the surface of parts from wood materials, glued surfaces are joined until glue hardens completely, at that glued parts are located between plates of electrostatic field capacitor so that power lines of electrostatic field are directed perpendicular to glue line and treated in electrostatic field with intensity of 2.16-9.5·102 V/cm, and glue applied on glued surfaces is polyvinyl acetate PVAC or epoxy K-153.

EFFECT: higher strength of glued connections of wood materials and higher speed of glue line hardening.

2 tbl

FIELD: technological processes.

SUBSTANCE: invention pertains to method and device to apply glue and curative components of multicomponent glue system to wooden part surfaces. The problem is solved due to the fact, that the method consists in capability to apply glue mixture components to the parts either separately, or as a ready-to-use mixture with application device, which is produced to support the mentioned alternative modes. At that, the device contains at least two glue application units. At least one of them, designed to apply curative components, can be switched off. Besides, the device contains at least one unit, which is used to apply either glue components, or mixed curative and glue components. The multicomponent glue system must contain at least one of the following glue components: urea-formaldehyde resin (UF), melamine urea-formaldehyde resin (MUF), melamine urea-phenol-formaldehyde resin (MUPF), phenol-resorcinol-formaldehyde resin (PRF), resorcinol-formaldehyde resin (RF), phenol-formaldehyde resin (PF), polyvinyl acetat (PVAc).

EFFECT: avoiding disadvantages of certain technical solutions.

8 cl, 2 ex, 1 dwg

FIELD: technological processes.

SUBSTANCE: method of timber-based materials adhesion includes operation of applying glue on adherend surfaces, joining of adherend surfaces until complete glue hardening, at that adherend parts are placed in between electromagnet poles, with power magnet lines perpendicular direction to glue joint, and are treated in impulse magnetic field with strength of 3-24-104 A/m and oscillation period of T=1-10 sec., and adherend surfaces are coated with urea-formaldehyde (KFZh) or polyvinyl acetate (PVA).

EFFECT: improves strength of glue joints of timber-based materials when using standard glues.

2 tbl

FIELD: wood-working industry; methods of production of the glued woodwork.

SUBSTANCE: the invention is pertaining to the method of production of the glued woodwork and the wooden components. The invention presents the method of production of the glued woodwork or the wooden components with usage of the glue systems. At that application of the glue on the heated wooden details or the wooden components is exercised by the separate application of the glue resin and the curing agent (the binding), or the glue system representing the mixture of the glue resin and the curing agent. Before application of the glue on the wooden details or components execute the uniform heating along the whole cross-section of the wooden details or the wooden components by means of the microwave radiation. The invention also presents the description of application of the method for production of the profile of the massive wood. The technical result of the invention is reduction of the time of pressing of the wooden details and the wooden components, the increased efficiency of the production of the glued structural wooden details and the wooden components.

EFFECT: the invention ensures reduction of the time of pressing of the wooden details and the wooden components, the increased efficiency of the production of the glued structural wooden details and the wooden components.

10 cl, 2 dwg

FIELD: chemistry.

SUBSTANCE: two-component composition of adhesion promotor contains first component K1 including at least one organoalkoxysilane S and at least one dehydrated surfactant T, and second component K2 including water and at least one acid, with acid taken in amount providing acid reaction at pH 3-5 in the mix obtained from K1 and K2 components.

EFFECT: simplified composition preparation, improved adhesion with composition stability preserved.

27 cl, 7 dwg, 12 tbl

FIELD: production of adhesive underlayers (adhesive primers) from compositions on base of organosilanes used for attaching of rubber on base of natural, isoprene, butadiene, butadiene-nitrile, butadiene-styrene, chloroprene and butyl rubber.

SUBSTANCE: proposed composition is single-layer adhesive for hot attaching of rubber on base of fluorine-containing and acrylic rubber to metal in the course of vulcanization. This composition may be used for manufacture of rubber-metal articles in automobile industry, mechanical engineering and other industries. Proposed composition contains 3-aminopropyl-triethyl ethoxy-silane, dimethacrylic ether of triethylene glycol, paraform solution in mono-ethanol amine, ethyl alcohol, glycerin and distilled water.

EFFECT: high strength of attaching rubber mixes to metals at vulcanization; enhanced corrosion resistance, heat resistance and ecological safety; low cost of product.

3 tbl

The invention relates to adhesives, namely, adhesive compositions for secure attachment of rubber from silicone elastomer to metal during vulcanization

FIELD: chemistry.

SUBSTANCE: invention relates to photopolymerisable adhesive compositions for gluing and sealing glass optical elements of different optical devices working on the border of visible and near UV band. The engineering problem lies in preparing a photopolymerisable organosilicon composition for gluing and sealing optical elements, which has high optical transmission in the wavelength range from 220 to 700 nm, has no intrinsic fluorescence and is distinguished by high versatility. A composition is disclosed, which has a base in form of a mixture of oligomers with general formula: R1Si(CH3)2O-[Si(CH3)2O]n-Si(CH3)2R2, where R1=OCH2CH(CH2Cl)-OCOC(CH3)=CH2, R2=OH, OCH2CH(CH2Cl)-OCO-C(CH3)=CH2, 1.5-2.0 radicals with double bonds in a molecule; n=50-300, and a photoinitiator selected from benzyldimethylketal, hydroxypropylacetophenon and 1-hydroxycyclohexylphenylketone, added in amount of 1.5-0.5 pts.wt per 100 pts.wt of the mixture of oligomers. Also disclosed is a single step method of preparing a mixture of oligomers (bases), characterised by that α,ω-dichloroligodimethylsiloxane is reacted with glycidyl methacrylate (GMA) in the presence of a dimethylformamide (DMFA) catalyst.

EFFECT: availability of raw materials and high output.

2 cl, 2 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to heat resistant labels, which can be attached at temperature from 300°C to 1100°C and methods of making these labels. Proposed is a label which includes a main layer, a substrate and an adhesive layer, where the main layer of the label is a hardened coating film, obtained by depositing on the working surface of the substrate, a composition and heating the composition. The composition contains silicon resin (A), polymetalocarbosilane resin (B-1) and a solvent (C), in which the weight ratio (A) : (B-1) lies between 1:9 and approximately 9:1. The substrate is a metal foil. The adhesive layer contains a hardened coating film, which contains silicon resin (A) and at least one compound, chosen from a group comprising polymetalocarbosilane resin, zinc powder, tin powder and aluminium powder (B). The polymetalocarbosilane resin contains at least one metal, chosen from a group consisting of titanium, zirconium, molybdenum and chrome. Proposed also is a method of making the proposed label and versions of the label, thermally stable at 670-1100°C.

EFFECT: design of heat resistant labels for attaching to metal at high temperature.

21 cl, 23 tbl, 59 ex

FIELD: chemistry.

SUBSTANCE: invention concerns polymerising composition containing: a) organoborane amine complex; b) one or more monomers, oligomers or polymers non-seturated by olefins and capable of free-radical polymerisation; c) one or more compounds, oligomers or prepolymers with main siloxane chain and reaction residues capable of polymerisation; and d) polymerisation catalyst for one or more compounds, oligomers or prepolymers with main siloxane chain and reaction residues capable of polymerisation. The claimed composition can additionally contain compound causing dissociation of organoborane amine complex. Preferably the two-component composition additionally includes a compound interacting with both b) one or more monomers, oligomers or polymers non-seturated by olefins and capable of free-radical polymerisation and c) one or more compounds, oligomers or prepolymers with main siloxane chain and reaction residues capable of polymerisation. The claimed composition can be polymerised by reaction of two composition components. The invention also concerns organoborane amine complex including alkylborane and ligands in the form of alkyl, cycloalkyl or both, and aminosiloxane. The claimed polymerising composition can be applied in glues, seals and coatings.

EFFECT: glue systems capable of gluing substrates with low surface energy, and initiation systems facilitating such gluing.

17 cl, 13 tbl, 91 ex

FIELD: adhesives.

SUBSTANCE: invention relates to heat-resistant modified glue compositions based on phenol-formaldehyde resins characterized by high strength of glued connections at 400-450°C and designed for gluing together various-destination structures, including aviation engineering parts. Composition comprises novolac phenol-formaldehyde resin, resol phenol-formaldehyde resin, organosilicon oligomer-hydroxyl-containing titanium-organosilicon oligomer in the form of acetone solution, organic solvent (ethyl alcohol), and fillers: aluminum powder and amorphous boron.

EFFECT: increased sheer strength of glued connections at high temperatures with initial strength of glued connections preserved.

2 tbl, 4 ex

The invention relates to the field of heat-resistant adhesive compositions having a high strength of the adhesive joints at 400oWith operating at 400oWith up to 50 h in the aerospace industry

The invention relates to adhesive compositions based on silicone polymers, can be used to connect any of the ceramic materials on the basis of nitrides, carbides or oxides, and composite materials (plastics, fiber glass and other), and can find application in engineering, aerospace and cryogenic engineering, electrical engineering and other industries for manufacturing a one-piece parts and structures
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