EP0149765B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Coating compositions containing a ketimine
Assignee: Wyeth Holdings LLC
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Filing: 1984-11-30
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Granted: 1990-03-28
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Expires: 2004-11-30
Abstract
Abstract Coating compositions comprising polymeric compounds containing aliphatic isocyanate groups and ketimines of di- and polyamines in a non-reactive solvent cure slowly in the presence of moisture to provide hard, tough, solvent-resistant surface coatings.
Inventors
- 👤 Volker Dietrich Arendt
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 04:03
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/70; C08G18/72; C08G18/74; C08G18/76; C08G18/7614; C08G18/7628; C08G18/08; C08G18/10; C08G18/728; C08G18/73; C08G18/75
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
98 words
A moisture-curable composition comprising the components. a. (i) A prepolymer polyurethane reaction product of an d , d ,α',α'-tetramethylxylylene diisocyanate and at least one polyol, said prepolymer having at least two isocyanate groups unreacted, or (ii) a prepolymer vinyl addition product of an isocyanate having the formula wherein R is hydrogen or alkyl and n is one or two and at least one other ethylenic unsaturated comonomer; and b . a k e timine of a polyamine with at least two primary amino groups having at least one of its amino groups blocked by reaction with a ketone.
Claim 2
Dependent Claim
98 words
A moisture-curable composition comprising the components. a. (i) A prepolymer polyurethane reaction product of an d , d ,α',α'-tetramethylxylylene diisocyanate and at least one polyol, said prepolymer having at least two isocyanate groups unreacted, or (ii) a prepolymer vinyl addition product of an isocyanate having the formula wherein R is hydrogen or alkyl and n is one or two and at least one other ethylenic unsaturated comonomer; and b . a k e timine of a polyamine with at least two primary amino groups having at least one of its amino groups blocked by reaction with a ketone.
Claim 3
Dependent Claim
17 words
A mixture defined by Claim 1 wherein the component a. is a polyurethane defined by a. (i).
Claim 4
Dependent Claim
38 words
A mixture defined by Claim 2 wherein the component a. (i) is the reaction product of the defined isocyanate with one or more of a polyester or a polyether or a polyacrylate or a polymethacrylate, having polyhydroxyl functionality.
Claim 5
Dependent Claim
45 words
A mixture defined by Claim 1 wherein the component a. is a polyurethane reaction product defined in a. (i) wherein the polyol is selected from the group consisting of 1,1,1-trimethylol propane, polytetramethylene ether glycol, or a polycaprolactone, or a mixture of any of the foregoing.
Claim 6
Dependent Claim
41 words
A mixture defined by Claim 1 wherein the component a, is the prepolymer defined by a. (ii) with from 2 to 50 percent by wt of units from the defined isocyanate monomer and the remainder of units from other defined monomers.
Claim 7
Dependent Claim
25 words
A mixture defined by Claim 1 wherein the defined component b. is a ketimine derived from an aliphatic diamine or polyamine and an aliphatic ketone.
Claim 8
Dependent Claim
29 words
A mixture defined by Claim 6 wherein the amine is selected from ethylene diamine, 1,6-hexanediamine and 1, 4-bis (aminomethyl) cyclohexane and the ketone is acetone or methyl- isobutyl ketone.
Claim 9
Dependent Claim
16 words
A mixture defined by Claim 6 wherein the defined component b. is substantially free of water.
Claim 10
Dependent Claim
28 words
A composition defined by Claim 2 which further comprises a liquid solvent for the defined components (a) and (b), said solvent being substantially non-reactive with the defined isocyanate.
Claim 11
Dependent Claim
29 words
A method for coating a substrate which comprises casting a film of the mixture defined by Claim 9 on the substrate and curing the film by exposure to air.
References Cited (Backward Citations)
No citation records indexed.
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