申请人:——
公开号:US20020147279A1
公开(公告)日:2002-10-10
The instant invention provides carbamate functional polymers and/or oligomers and coating compositions containing such which have improved levels of nonvolatile solids yet demonstrate good sprayability and etch resistance. The carbamate functional polymers and/or oligomers of the invention comprise the polymerization reaction product of (a) a polymer or oligomer comprising a plurality of functional groups reactive with an active hydrogen group, and (b) a monomeric compound of the formula:
1
wherein at least one of Y and Z is an active hydrogen containing group and the other is a primary carbamate group, and R is of the formula: —(L)
n
—R′ wherein L is a linking group of one or more carbons containing heteratoms selected from the group consisting of O, N, and mixtures thereof, R′ is an alkyl group free of heteratoms and selected from the group consisting of branched alkyl groups having from 5 to 30 carbons, straight chain alkyl groups of more than 2 carbons, and mixtures thereof, and n is a number from 0 to 1.
本发明提供了氨基甲酸酯官能团聚合物和/或低聚物以及含有此类物质的涂料组合物,其非挥发性固体含量有所提高,但具有良好的可喷涂性和抗蚀刻性。本发明的氨基甲酸酯功能聚合物和/或低聚物包括以下两种物质的聚合反应产物:(a) 由多个与活性氢基反应的官能团组成的聚合物或低聚物;(b) 式中的单体化合物:
1
其中 Y 和 Z 至少有一个是活性含氢基团,另一个是伯氨基甲酸酯基团,R 的式子为-(L)
n
-其中 L 是一个或多个碳原子的连接基团,含有选自 O、N 及其混合物的杂原子;R′是不含杂原子的烷基,选自 5 至 30 个碳原子的支链烷基、2 个以上碳原子的直链烷基及其混合物;n 是 0 至 1 的数字。