Inventors:
John H. Rogers - Greenville SC
Assignee:
Hoechst Celanese Corporation - Somerville NJ
International Classification:
C08G 6302
Abstract:
A polyester resin is disclosed which is resistant to splitting during transverse orientation during conventional film manufacturing. The polyester resin contains up to 7 weight percent, based uon the total weight of the resin, of
(A) a dicarboxylic acid component consisting essentially of 1,4-cyclohexandeicarboxylic acid having a trans isomer content of at least 70%
(B) a glycol component consisting essentially of
(1) 1,4-cyclohexanedimethanol, and
(2) from about 15 to about 50 weight percent, based on the weight of the polyesterether, of polytetramethyleneether glycol having a molecular weight of about 500 to about 1100 and
(c) from about 0. 1 to about 1. 5 mole percent, based on the mole percentage of the acid or glycol component, of a branching agent having at least three COOH or OH functional groups and from 3 to 60 carbon atoms.