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1. (WO2015124959) SULFONATED CO-POLYESTERS AND METHOD FOR MANUFACTURING

Pub. No.:    WO/2015/124959    International Application No.:    PCT/IB2014/002278
Publication Date: Fri Aug 28 01:59:59 CEST 2015 International Filing Date: Fri Oct 31 00:59:59 CET 2014
IPC: C08G 63/183
C08G 63/80
Applicants: ESTER INDUSTRIES LIMITED
Inventors: KULKARNI, Sanjay, Tammaji
RAJ, Dilly
REDDY, Kandula, Muniswamy
VYAS, Chandrakant, Onkar
Title: SULFONATED CO-POLYESTERS AND METHOD FOR MANUFACTURING
Abstract:
A method of forming a polymer includes polymerizing a first pre-polymer, produced by the reaction of a dicarboxylic acid, or ester thereof with a first alkylene diol; with a second pre-polymer produced by the reaction of an aromatic sulfonate or a salt thereof, or ester thereof, with a second alkylene diol; to form a metal sulfonate copolymer; reacting the metal sulfonate co-polymer with a fast crystallizing polyester block having a degree of polymerization of at least about 20 to provide an amorphous sulfonated co-polyester; and crystallizing the amorphous sulfonated co-polyester to form a crystallized sulfonated co-polyester.