公开(公告)号：US4663423A

公开(公告)日：1987-05-05

申请号：US723367

申请日：1985-04-15

申请人： Hironori Yamada ,  Nobuo Sayama ,  Masashi Kuno

发明人： Hironori Yamada ,  Nobuo Sayama ,  Masashi Kuno

IPC分类号： C08G63/00 ,  C08G63/60 ,  C08G63/78 ,  C08G63/12

CPC分类号： C08G63/78 ,  C08G63/60

摘要： A polyester formed by adding compounds of the following formulae I and II to a reaction product of terephthalic acid or a dicarboxylic acid mixture mainly composed of terephthalic acid or an ester-forming derivative thereof with at least one glycol or an ester-forming derivative thereof, having a melt electrical resistance of not higher than 1600.times.10.sup.6 .OMEGA. and a softening point higher than the softening point derived from Flory's equation for the melting temperature of random copolymers but lower than the softening point of a polyester obtained by adding a compound of formula I alone: ##STR1## wherein each R independently represents a hydrogen atom or an alkyl group having 1 or 2 carbon atoms.

摘要翻译： 通过将下式I和II的化合物加入到对苯二甲酸或主要由对苯二甲酸或其成酯衍生物组成的二羧酸混合物与至少一种二醇或其成酯衍生物的反应产物中形成的聚酯， 熔融电阻不高于1600×10 6欧米茄，软化点高于无规共聚物熔融温度Flory方程的软化点，但低于通过单独加入式I化合物得到的聚酯的软化点： 其中每个R独立地表示氢原子或具有1或2个碳原子的烷基。