AQUEOUS LIQUID CONTAINING VINYL-MODIFIED EPOXY RESIN, PROCESS FOR PRODUCING THE SAME, AND WATER-BASED COATING MATERIAL
申请人:ARAKAWA CHEMICAL INDUSTRIES, LTD.
公开号:EP1908799A1
公开(公告)日:2008-04-09
An aqueous vinyl-modified epoxy resin composition of the invention comprises: an aqueous composition comprising a modified epoxy resin (A) that is neutralized with a basic compound and dispersed or dissolved in water, wherein the modified epoxy resin (A) is obtained by copolymerizing a polymerizable unsaturated group-containing modified epoxy resin (a) and a vinyl monomer (b) comprising at least a carboxyl group-containing vinyl monomer (b-1), wherein the polymerizable unsaturated group-containing modified epoxy resin (a) is obtained by a reaction among (a-1) an epoxy resin comprising at least an aromatic epoxy resin (a -11), (a-2) a glycidyl group-containing vinyl monomer, and (a-3) an amine, and optionally (a-4) a component capable of reacting with the components (a-1) to (a-3); and a water-miscible crosslinking agent (B). The aqueous vinyl-modified epoxy resin composition of the invention can provide a coating film that has high resistance to harsher environment, such as resistance to brake fluids.
本发明的乙烯基改性环氧树脂水性组合物包括一种水性组合物,包含一种用碱性化合物中和并分散或溶解在水中的改性环氧树脂(A),其中改性环氧树脂(A)是通过共聚一种可聚合的含不饱和基团的改性环氧树脂(a)和一种至少包含一种含羧基的乙烯基单体(b)而得到的、其中,可聚合的含不饱和基团改性环氧树脂(a)是由以下物质反应得到的:(a-1) 至少包括芳香族环氧树脂(a-11)的环氧树脂,(a-2) 含缩水甘油基团的乙烯基单体,(a-3) 氨基,以及可选的(a-4) 能与组分(a-1)至(a-3)反应的组分;和一种水溶性交联剂 (B)。本发明的水性乙烯基改性环氧树脂组合物可以提供具有较高抗恶劣环境性能的涂膜,例如抗制动液性能。