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1. 发明授权

US06258887B1 Dirt pickup resistant coating binder and coatings 失效
标题翻译：防污涂层粘合剂和涂料
公开(公告)号：US06258887B1
公开(公告)日：2001-07-10
申请号：US09450580
申请日：1999-11-30
申请人： James Keith Bardman , Ralph Craig Even , Mark Stephen Frazza , Yili Guo , Robert Krasnansky , Rosemarie Palmer Lauer
发明人： James Keith Bardman , Ralph Craig Even , Mark Stephen Frazza , Yili Guo , Robert Krasnansky , Rosemarie Palmer Lauer
IPC分类号： C08J300
CPC分类号： C08F265/06 , C08F263/04 , C08F265/02 , C09D151/003 , C08L2666/02
摘要： A multi-stage aqueous emulsion-polymer suitable for use in dirt pickup resistant coatings and coatings containing the polymer are provided. The multi-stage aqueous emulsion polymer includes (i) a first polymer including at least one nonionic copolymerized monoethylenically unsaturated monomer, from 0.5% to 7% of a copolymerized monoethylenically unsaturated ionic monomer, based on the weight of the first polymer, and from 0% to 1.0%, based on the weight of the first polymer, of a copolymerized multi-ethylenically unsaturated monomer, the first polymer having a Tg of 15° C. to 105° C.; and (ii) a second polymer comprising at least one nonionic copolymerized monoethylenically unsaturated monomer, from 0% to 2% of a copolymerized monoethylenically unsaturated ionic monomer, and from 0.25% to 6%, based on the weight of the second polymer, copolymerized multi-ethylenically unsaturated monomer, the second polymer having a Tg of −55° C. to 30° C., the second polymer having a different composition than the first copolymer, and the second polymer being from 25% to 75% of the total weight of the first polymer and the second polymer, based on dry polymer weights.
摘要翻译：提供了适用于防尘涂层和含有聚合物的涂层的多级水性乳液聚合物。多级水性乳液聚合物包括（i）包含至少一种非离子共聚单烯属不饱和单体的第一聚合物，基于第一聚合物重量的0.5％至7％的共聚单烯属不饱和离子单体，和0 基于第一聚合物的重量计，共聚多烯属不饱和单体的百分比至1.0％，第一聚合物的Tg为15℃至105℃; 和（ii）包含至少一种非离子共聚单烯属不饱和单体，0％至2％共聚单烯属不饱和离子单体和基于第二聚合物重量的0.25％至6％的第二聚合物，共聚多烯属不饱和单体，第二聚合物的Tg为-55℃至30℃，第二聚合物的组成不同于第一共聚物，第二聚合物的总重量为25％至75％的第一聚合物和第二聚合物，基于干聚合物重量。

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