申请人:JAMES RIVER-GRAPHICS, INC.
公开号:EP0362853A2
公开(公告)日:1990-04-11
The present invention relates to phenoxy resins suitable for vesicular films and to processes for synthesizing such resins. In a first aspect, the invention relates to a Methyl Cellosolve-free "process branched" vesicular phenoxy resin which is coatable, highly branched, ungelled, non-linear, branched at hydroxy groups derived from a difunctional epoxide, and having a molar ratio of monomeric units derived from a difunctional epoxide: monomeric units derived from a dihydric phenol of greater than or equal to 1. In a second aspect, the invention relates to a Methyl Cellosolve-free hybrid chemically branched process branched vesicular phenoxy resin which is highly coatable, highly branched, ungelled, non-linear and branched at (1) hydroxy groups derived from a difunctional epoxide and (2) epoxide or hydroxy functional groups derived from a branching agent having three or more functional groups.
本发明涉及适用于水泡膜的苯氧树脂以及合成这种树脂的工艺。在第一方面,本发明涉及一种不含甲基环氧乙烷的 "工艺支化 "泡状苯氧树脂,它是可涂覆的、高支化的、非胶凝的、非线性的、在羟基上支化的、由二官能环氧化物衍生的,并且由二官能环氧化物衍生的单体单元的摩尔比:由二元苯酚衍生的单体单元的摩尔比大于或等于 1。第二方面,本发明涉及一种不含甲基环氧乙烷的混合化学支化工艺支化泡状苯氧基树脂,该树脂具有高涂覆性、高支化性、无胶凝性、非线性和支化性,其支化点为(1)衍生自二官能环氧化物的羟基和(2)衍生自具有三个或三个以上官能团的支化剂的环氧化物或羟基官能团。