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1. (WO2003074583) AZETIDINIUM-FUNCTIONALISED POLYMERS AND COMPOSITIONS CONTAINING THE SAME

Pub. No.:    WO/2003/074583    International Application No.:    PCT/EP2003/000283
Publication Date: Sep 12, 2003 International Filing Date: Jan 13, 2003
IPC: C08G 63/42
C08G 63/685
C08G 63/85
C08G 63/87
D06M 15/507
Applicants: UNILEVER PLC
UNILEVER NV
HINDUSTAN LEVER LIMITED
PARKER, Andrew, Philip
Inventors: PARKER, Andrew, Philip
Title: AZETIDINIUM-FUNCTIONALISED POLYMERS AND COMPOSITIONS CONTAINING THE SAME
Abstract:
The invention provides a biodegradable azetidinium-functional polyester. This is useful for treating a substrate such as a cellulosic or keratinaceous textile material, preferably in the presence of a carrier. The polymer can be prepared by:a) reacting an amine-containing (di)acid or (di)ol with a suitable co-reactant, and,b) treating the product of step (a) with an epihalohydrin.Preferably step (a) occurs in the presence of a catalyst selected from the group comprising sulphuric acid, p-toluenesulphonic acid and a hafnium(IV) compound. The preferred diacid are iminodiacarboxylic acids in which each carboxylic acid moiety has a carbon number of 2-4. The preferred diols are polyalkylene glycols in which the repeat unit has a carbon number of 2-3.