摘要:
A powder coating composition comprising at least about 0.1% by weight of a reaction product of an aminoplast and a compound having one carbamate group has improved smoothness.
摘要:
Polyurethane polymers having pendant carbamate groups are disclosed. The polymers are prepared by:
(a) reacting a mixture comprising a polyol having at least one pendant carbamate group and a polyisocyanate to form a polyurethane having pendant carbamate groups, and (b) optionally, capping the polyurethane from (b) with an active hydrogen-containing capping agent.
摘要:
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).
摘要:
Curable compositions are disclosed comprising:
(A) carbamate-functional compound that is the reaction product of a mixture comprising:
(1) a monomeric polyisocyanate, and (2) a compound comprising a group that is reactive with isocyanate and a carbamate group or group that can be converted to carbamate, and
(B) a compound having a plurality of functional groups that are reactive with carbamate groups on said carbamate-functional compound.
摘要:
A coating composition is described comprising: (a) a carboxy-functional polyurethane compound that is the reaction product of: (i) a polyisocyanate compound, and (ii) a compound comprising at least one acid group and at least one isocyanate-reactive group, (b) a curing agent comprising at least two groups that are reactive with the epoxy groups on the polyurethane compound.