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1. (WO2001034693) ACID DYEABLE POLYESTER COMPOSITIONS

Pub. No.:    WO/2001/034693    International Application No.:    PCT/US2000/030772
Publication Date: Fri May 18 01:59:59 CEST 2001 International Filing Date: Fri Nov 10 00:59:59 CET 2000
IPC: C08G 69/44
C08K 5/17
C08L 67/02
C08L 77/00
C08L 77/06
Applicants: E.I. DU PONT DE NEMOURS AND COMPANY
Inventors: SUN, Yanhui
ZHAO, Jun
Title: ACID DYEABLE POLYESTER COMPOSITIONS
Abstract:
An acid-dyeable polyester composition comprising (a) polyester and (b) secondary amine or secondary amine salt in an amount effective to promote acid-dyeability. The acid-dyeable polyester composition may be prepared by melt blending: the polyester; and polymeric additive prepared from (i) triamine containing secondary amine or secondary amine salt unit(s) and (ii) one or more other monomer and/or polymer units. One polymeric additive comprises polyamide selected from the group consisting of poly-imino-bisalkylene-terephthalamide, -isophthalamide and - ,6-naphthalamide, and salts thereof. Also, the polymeric additive, the blends, shaped articles (e.g., fibers and films), processes of dyeing, and processes for preparing an acid dyeable polyester composition.