公开(公告)号：WO2018064335A1

公开(公告)日：2018-04-05

申请号：PCT/US2017/054013

申请日：2017-09-28

Applicant: VALSPAR SOURCING, INC.

Inventor： GAN, Yangchang ,  ZHAO, Xi ,  CHEN, Xiaorui ,  DUAN, Gang

IPC: C09D133/08 ,  C09D133/10 ,  C08L33/08 ,  C08L33/10

Abstract: The present invention is a water dispersible copolymer for scavenging formaldehyde, the copolymer being based on acrylic copolymer comprising one or more acetoacetyl functional groups and one or more hydrophilic groups chemically bonded to its molecular backbone, wherein the acrylic copolymer has a number average molecular weight of 2000-100,000 g/mol; and wherein the acrylic copolymer comprises between 10 wt% and 30 wt% of the acetoacetyl functional groups relative to the weight of the acrylic copolymer. The present invention also refers to an aqueous dispersion containing said water dispersible copolymer, as well as an article coated by a coating comprising the aqueous dispersion.

Abstract translation: 本发明是用于清除甲醛的水分散性共聚物，所述共聚物基于丙烯酸类共聚物，所述丙烯酸类共聚物包含一个或多个乙酰乙酰基官能团和一个或多个与其分子骨架化学键合的亲水基团，其中所述丙烯酸类 共聚物的数均分子量为2000-100,000g / mol; 并且其中相对于所述丙烯酸类共聚物的重量，所述丙烯酸类共聚物包含10重量％至30重量％的所述乙酰乙酰基官能团。 本发明还涉及一种含有所述水分散性共聚物的水分散体，以及一种用含水分散体的涂料涂布的制品。