申请人:ICHIKAWA CO.,LTD.
公开号:EP1574536A1
公开(公告)日:2005-09-14
The invention provides a papermaking machine belt (10) comprising a polyurethane (20) and a substrate (30), wherein the polyurethane (20) is obtained by curing an isocyanate group-terminated urethane prepoylymer with a hardener, the urethane prepolymer being a reaction product of (1) a phthalic acid polyester polyol represented by the following formula (I):
wherein R1 is a bivalent group selected from the group consisting of (a) an alkylene group having 2 to 6 carbon atoms, and (b) a group represented by the following formula (II):
-(R2O)n-R2- (II)
wherein R2 is an alkylene group having 2 or 3 carbon atoms, and n is an integer of 1 to 3; and m is from 1 to 15, and (2) a diisocyanate.
本发明提供了一种造纸机传送带(10),包括聚氨酯(20)和基材(30),其中聚氨酯(20)是通过用固化剂固化异氰酸酯基团封端的聚氨酯预聚物获得的,聚氨酯预聚物是(1)下式(I)代表的邻苯二甲酸聚酯多元醇的反应产物:
其中 R1 是选自以下组别的二价基团:(a) 具有 2 至 6 个碳原子的亚烷基;(b) 下式 (II) 所代表的基团:
-(R2O)n-R2- (II)
其中 R2 为具有 2 或 3 个碳原子的亚烷基,n 为 1 至 3 的整数,m 为 1 至 15,以及 (2) 二异氰酸酯。