Low-foam surface sizing agents for paper which contain copolymer

Details Low-foam surface sizing agents for paper which contain copolymer Low-foam surface sizing agents for paper which contain copolymer

1982-08-24

1984-11-06

Henderson, Christopher A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

1621646, 524215, 524216, 524379, 524385, 524389, 525379, C08K 521, C08K 505

Patent

active

044813198

ABSTRACT:
Low-foam surface sizing agents for paper in the form of aqueous or aqueous-alcoholic alkali metal, amine or ammonium salt solutions of copolymers containing carboxylic acid semi-amide groups obtainable by reacting copolymers of maleic acid anhydride and diisobutylene and/or terpolymers of maleic acid anhydride, diisobutylene and a vinyl monomer copolymerizing with maleic acid anhydride, with from 5 to 50 mole percent, based on maleic acid anhydride groups, of a primary aliphatic or aromatic monoamine. The solutions may optionally contain urea or derivatives of urea.

REFERENCES:
patent: 3398092 (1968-08-01), Fields
patent: 4048422 (1977-09-01), Sackmann
patent: 4064296 (1977-12-01), Bornstein
patent: 4075028 (1978-02-01), Amosov
patent: 4151336 (1979-04-01), Sackmann
patent: 4152312 (1979-05-01), Sackmann
patent: 4188443 (1980-02-01), Mueller
patent: 4194039 (1980-03-01), Mueller
patent: 4261473 (1981-04-01), Yamada

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