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1. 发明授权

US4975494A Polymer bound light stabilizer coating resins 失效
标题翻译：聚合物结合光稳定剂涂料树脂
公开(公告)号：US4975494A
公开(公告)日：1990-12-04
申请号：US486568
申请日：1990-02-28
申请人： Vasanth R. Kamath , James D. Sargent
发明人： Vasanth R. Kamath , James D. Sargent
IPC分类号： C08F8/30 , C09D7/12 , C09D133/14
CPC分类号： C09D133/14 , C08F8/30 , C09D7/1241 , C08K5/005
摘要： Acrylic coating resins with attached light stabilizer functional groups are provided.The polymer bound light stabilizer coating resins are prepared by reacting light stabilizer hydrazides, LS--C(.dbd.O)--NR.sup.3 --NH.sub.2, with an acrylic prepolymer containing at least two different types of reactive functional groups, one of which is a hydroxyalkyl ester group and the other is carboxyl, anhydride, epoxy or isocyanate. LS is a light stabilizer moiety, and R.sup.3 is hydrogen, primary alkyl of 1 to 8 carbons, secondary alkyl of 3 to 8 carbons, aralkyl of 7 to 12 carbons or cycloalkyl of 5 to 12 carbons. The reaction may be carried out in an inert solvent or in the bulk state.The acrylic resins so produced with chemically bound light stabilizer groups are particularly useful in the stabilization of coatings. Enamel or lacquer coatings containing the polymer bound light stabilizer resins exhibit outstanding weatherability and durability. As a result of being chemically bound, the light stabilizers are resistant to loss due to volatility and extractability during typical coatings bake operations and exposure to the elements of weather.
摘要翻译：提供具有附着的光稳定剂官能团的丙烯酸涂料树脂。聚合物结合的光稳定剂涂料树脂通过使光稳定剂酰肼LS-C（= O）-NR 3 -NH 2与含有至少两种不同类型的反应性官能团的丙烯酸类预聚物反应制备，其中一种是羟烷基酯基另一种是羧基，酸酐，环氧或异氰酸酯。 LS为光稳定剂部分，R3为氢，碳原子数为1〜8的伯烷基，碳原子数为3〜8的仲烷基，碳数为7〜12的芳烷基或碳数为5〜12的环烷基。该反应可以在惰性溶剂中或在大量状态下进行。用化学结合的光稳定剂基团制成的丙烯酸树脂特别可用于涂料的稳定化。含有聚合物键合的光稳定剂树脂的漆或漆涂料表现出优异的耐候性和耐久性。作为化学结合的结果，光稳定剂在典型的涂层烘烤操作和暴露于天气元素期间由于挥发性和萃取性而受到损失。

2. 发明授权

US4927891A Polymer bound light stabilizer coating resins 失效
标题翻译：聚合物结合光稳定剂涂料树脂
公开(公告)号：US4927891A
公开(公告)日：1990-05-22
申请号：US275452
申请日：1988-11-23
申请人： Vasanth R. Kamath , James D. Sargent
发明人： Vasanth R. Kamath , James D. Sargent
IPC分类号： C08F8/30 , C09D7/12 , C09D133/04 , C09D133/06 , C09D133/14
CPC分类号： C09D133/14 , C08F8/30 , C09D7/1241 , C08F2800/20 , C08K5/20
摘要： Acrylic coating resins with attached light stabilizer functional groups are provided.The polymer bound light stabilizer coating resins are prepared by reacting light stabilizer hydrazides, LS--C(.dbd.0)--NR.sup.3 --NH.sub.2, with an acrylic prepolymer containing at least two different types of reactive functional groups, one of which is a hydroxyalkyl ester group and the other is carboxyl, anhydride, epoxy or isocyanate. LS is a light stabilizer moiety, and R.sup.3 is hydrogen, primary alkyl of 1 to 8 carbons, secondary alkyl of 3 to 8 carbons, aralkyl of 7 to 12 carbons or cycloalkyl of 5 to 12 carbons. The reaction may be carried out in an inert solvent or in the bulk state.The acrylic resins so produced with chemically bound light stabilizer groups are particularly useful in the stabilization of coatings. Enamel or lacquer coatings containing the polymer bound light stabilizer regins exhibit outstanding weatherability and durability. As a result of being chemically bound, the light stabilizers are resistant to loss due to volatility and extractability during typical coatings bake operations and exposure to the elements of weather.

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