AMPHOTERIC COPOLYMER AND ITS PRODUCTION

Japanese Patent JPH1121313

A

PROBLEM TO BE SOLVED: To obtain an amphoteric copolymer having excellent surface activity by converting the nitrogen atoms contained in a random copolymer comprising a (meth)acrylic acid dialkylaminoalkyl ester and/or a (meth)acrylic acid dialkylaminoalkylamide, a (meth)acrylic ester and a water-soluble unsaturated compound into cationized nitrogen atoms. SOLUTION: This copolymer is an amphoteric copolymer prepared by converting 5-100 mol.% nitrogen atoms contained in a copolymer prepared by randomly copolymerizing a mixture comprising a monomer (A) comprising an ester of formula I (wherein R<1> is H or methyl; R<2> is a lower alkylene; and R<3> and R<4> are each a lower alkyl) and/or an amide of formula II, an ester (B) of formula III (wherein R<5> is a 1-24C aliphatic group or an aromatic group) and a water-soluble unsaturated compound (C) and having a monomer A/B weight ratio of 30/70-90/10 and a monomer C content of 0-10 wt.% into cationized nitrogen atoms of formula IV (wherein R<6> is a 7-23C alkylene or an alkenylene; and M is a salt-forming cation).

TOKI IKUKO
MOROHARA KIYOSHI
DANNOUE YUKIHIRO
ISODA MASANORI
YOSHII TORU

JP18901597A

January 26, 1999

June 30, 1997

Click for automatic bibliography generation  

LION CORP

C08F8/44; C08F20/36; C08F20/60; (IPC1-7): C08F8/44; C08F20/36; C08F20/60

Toshiaki Ikeura (1 outside)

Previous Patent: BLOCK COPOLYMER AND PRODUCTION THEREOF

Next Patent: SULFONE GROUP-CONTAINING MELAMINE FORMALDEHYDE RESIN