Low-foam surface sizing agents for paper

Details Low-foam surface sizing agents for paper Low-foam surface sizing agents for paper

C - Chemistry, Metallurgy

08

L

400/9069, 400/92

C08L 35/00 (2006.01) C08F 8/32 (2006.01) D21H 17/35 (2006.01) D21H 17/43 (2006.01) D21H 17/45 (2006.01)

Patent

CA 1153142

Abstract of Disclosure Low-foam surface sizing agents for paper in the form Or aqueous or aqueous-alcoholic alkali metal, amine or ammonium salt solutions of copolymers containing carboxylic acid semi-amide groups obtain- able by reacting copolymers of maleic acid anhydride and diisobutylene and/or terpolymers of maleic acid anhydride, diisobutulene and a vinyl monomer copoly- merizing with maleic acid anhydride, with from 5 to 50 mole per cent, based on maleic acid anhydride groups, of a primary aliphatic or aromatic mono- amine. The solutions may optionally contain urea or derivatives of urea.

335775

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