Abstract: In the preparation of a fiber-forming polyester, the number of free carboxyl end groups present in the polymer may be reduced by adding to the polymerized polyester a glycidyl ether which reacts with the carboxyl end groups present to form free hydroxyl end groups.
Type:
Grant
Filed:
November 9, 1966
Date of Patent:
April 5, 1977
Assignee:
Millhaven Fibers, Ltd.
Inventors:
William Alexander, Alfredo Guillermo Causa, James Girvan Fraser