Abstract: A stimuli-responsive polymer derivative utilizing keto-enol tautomerization. Also disclosed are a simple process for producing an N-acyl(meth)acrylamide derivative which can be used as a monomer for the stimuli-responsive polymer, a process for the production of an intermediate thereof, and an intermediate thus produced.
Type:
Grant
Filed:
June 25, 2002
Date of Patent:
February 8, 2005
Assignees:
Agency of Industrial Science & Technology MITI, Japan Chemical Innovation Institute
Abstract: The invention provides water-soluble or water-swellable copolymers obtained by free-radical copolymerization of
A) acryloyldimethyltaurine and/or acryloyldimethyltaurates,
B) optionally, one or more other olefinically unsaturated, optionally crosslinking, comonomers containing at least one oxygen, nitrogen, sulfur or phosphorus atom and possessing a molecular weight of less than 500 g/mol, and
C) one or more at least monofunctional, fluorine-containing components capable of free-radical polymerization, the copolymerization
D) taking place in the presence or absence of at least one polymeric additive having number-average molecular weights of from 200 g/mol to 109 g/mol.
The water-soluble or water-swellable copolymers of the present invention are useful in paper processing, laundry detergents, textile processing, petroleum extraction and formulating cosmetics.
Type:
Grant
Filed:
November 24, 2003
Date of Patent:
December 21, 2004
Assignee:
Clariant GmbH
Inventors:
Roman Morschhäuser, Christoph Kayser, Matthias L{hacek over (o)}ffler