Polyester and polymer modifier comprising the polyester as active ingredient,申请号US20020130280-传众专利搜索

Polyester and polymer modifier comprising the polyester as active ingredient

申请公布号：US2002193556(A1)

申请号：US20020130280

申请日期：2002.05.28

申请公布日期：2002.12.19

申请人：

KITAHARA SHIZUO;HAYASHI ATSUSHI;IKEDA SHINYA

发明人：KITAHARA SHIZUO;HAYASHI ATSUSHI;IKEDA SHINYA

分类号：C08G63/137;C08G63/20;C08J7/04;C08L23/02;C08L23/12;C08L23/16;C08L67/00;(IPC1-7):C08G63/02

主分类号：C08G63/137

摘要：A polyester having a weight average molecular weight of 10,000 to 200,000, a hydroxyl value of 30 to 200 mgKOH/g, an acid value of not larger than 5 mgKOH/g and a glass transition temperature of 35 to 60° C., which is obtained by polycondencing a polycarboxylic acid ingredient comprising as a principal ingredient a polycarboxylic acid compound selected from alicyclic polycarboxylic acids and anhydrides thereof, which have a carboxyl group at each of adjacent two carbon atoms, with a polyhydric alcohol ingredient comprising as principal ingredients an alkylene glycol having 2 or 3 carbon atoms and a tetrahydric or higher-hydric alcohol. By incorporating a modifier for polymer, comprising this polyester as an effective ingredient, in a polymer, a polymer composition is obtained which gives a shaped article exhibiting improved adhesion to a thermosetting resin.