Back to results
US 11,891,537 B2Granted
Triphenylphosphine-containing coatings with enhanced adhesion to unprimed surfaces
AssigneeSheboygan Paint Company
InventorsSamantha Rose Moran, Chandrakant Laxman Halli
Life of this patent
Estimating the term…
Abstract
A curable resin composition may include a component having two or more active methylene groups and/or active methine groups, a component having at least two α,β-unsaturated carbonyl groups, and a triphenylphosphine catalyst that promotes a Michael reaction between the other two components. The composition can be used to coat metal substrates and can exhibit particularly good performance characteristics when applied to unprimed, bare metal surfaces.
Claims24
A curable resin composition comprising:
- (a) at least one component comprising two or more active methylene groups and/or active methine groups;
- (b) at least one component comprising at least two α, β-unsaturated carbonyl groups;
- and
- (c) from 0.5 weight percent to 7.5 weight percent of a triphenylphosphine catalyst that promotes a Michael reaction between said components (a) and (b);
- wherein the composition cures under ambient conditions;
- and
- wherein the composition exhibits a viscosity substantially similar to the viscosity of one or more of (a) or (b) for a period of at least 15 minutes.
4 more elements
A method of coating a substrate comprising:
- mixing a curable resin composition comprising (a) at least one component comprising two or more active methylene groups and/or active methine groups, (b) at least one component comprising at least two α, β-unsaturated carbonyl groups, and (c) from 0.5 weight percent to 7.5 weight percent of a triphenylphosphine catalyst, thereby promoting a Michael reaction between the at least one component comprising two or more active methylene groups and/or active methine groups and the at least one component comprising at least two α, β-unsaturated carbonyl groups;
- applying the curable resin composition to a substrate,
- wherein the curable resin composition cures at ambient conditions;
- and
- wherein the curable resin composition exhibits a viscosity substantially similar to the viscosity of one or more of (a) or (b) for a period of at least 15 minutes.
2 more elements
Dependencies are inferred from the claim text.