Abstract:
Curable coating compositions are described comprising
(a) a polymer resin comprising active hydrogen-containing functional groups other than carbamate, (b) a curing agent having groups that are reactive with said functional groups on (a), and (c) a compound having a molecular weight of from 75 to 2000 comprising at least one group of the formula:
wherein X is O or NH and either (a), (b), or both (a) and (b) comprise groups that are reactive with said group on (c).
Abstract:
The present invention relates to ionic and nonionic polyamide modified polyurethane resins for use in automobile clearcoat and basecoat systems. The polyamide modified polyurethane resins of the present invention are formed by reacting a polyamide with a diisocyanate functional monomer, a prepolymer having at least two reactive hydrogens and a hydrophilic functional monomer.
Abstract:
The present invention relates to a modified crosslinkable resin and a composite coating composition or system employing the resin. More particularly, the resin comprises an ethylenically unsaturated monomer or copolymer and para-hydroxybenzoic acid or substituted para-hydroxybenzoic acid, the reaction product thereof subsequently being reacted with a crosslinking agent gives rise to a composition including an ether linkage with a carbon-carbon site ortho to the phenolic hydroxy group.
Abstract:
A curable coating composition is described comprising
(A) a compound comprising a plurality of functional crosslinking groups, at least one of which is a carbamate or urea functional group, which compound also includes at least one carbonate group having the structure:
(B) a curing agent comprising a plurality of groups that are reactive with the functional groups on compound (A).
Abstract:
A method of preparing a multilayer coating is described. The method comprises the steps of:
(1) applying onto a substrate a first curable coating composition comprising two components that are reactive with one another to form urethane linkages and a third component that includes one or more epoxy groups, (2) curing the first curable coating composition to form a cured coating, (3) applying a second curable coating composition onto the surface of the coating from step (2), and (4) curing the second curable coating composition.
Abstract:
Polyester polymers having pendant carbamate groups are disclosed. The polymers are prepared by reacting a polyol having at least one pendant carbamate group with a polyacid to form a polyester having pendant carbamate groups.