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21. 发明授权

US06174953B1 Low molecular weight (meth) acrylate copolymer emulsions 有权
标题翻译：低分子量（甲基）丙烯酸酯共聚物乳液
公开(公告)号：US06174953B1
公开(公告)日：2001-01-16
申请号：US09240082
申请日：1999-01-29
申请人： Josef Huybrechts
发明人： Josef Huybrechts
IPC分类号： C08J300
CPC分类号： C08F290/06 , C08F290/04 , C08F290/061 , C08F291/08 , C08F293/005 , C09D151/003 , C09D153/00 , C08L2666/02 , C08F220/10
摘要： Graft and block copolymers with a weight average molecular weight below 20,000, a hydroxy value more than 200 and acid value below 50 which copolymers comprise (a) 20-98% by weight of a water soluble macromonomer having a hydroxy value of at least 300, a weight average molecular weight below 6000, containing less than 10% by weight of an acid functional monomer and having a terminal unsaturated double bond; and (b) 2 to 80% of polymerized monomers selected from vinyl monomers, acrylate monomers, methacrylate monomers and mixtures thereof, form stable coating compositions that are compatible with polyisocyanate crosslinking agents and provide improved properties and appearance in automotive finishes.
摘要翻译：重均分子量低于20,000，羟值超过200，酸值低于50的接枝共聚物和嵌段共聚物，该共聚物包含（a）20-98重量％的羟值为至少300的水溶性大分子单体，重均分子量低于6000，含有少于10重量％的酸官能单体并具有末端不饱和双键; 和（b）选自乙烯基单体，丙烯酸酯单体，甲基丙烯酸酯单体及其混合物的2至80％的聚合单体形成与多异氰酸酯交联剂相容的稳定的涂料组合物，并在汽车涂料中提供改进的性能和外观。

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