Process for the production of copolymer powders

Details Process for the production of copolymer powders Process for the production of copolymer powders

C - Chemistry, Metallurgy

08

F

400/1130, 402/31

C08F 222/06 (2006.01) C08F 210/00 (2006.01) C08F 212/08 (2006.01) C08L 7/00 (2006.01) C08L 9/00 (2006.01) C08L 21/00 (2006.01)

Patent

CA 1090950

Abstract of the Disclosure: An improved process for the production of powders of maleic acid anhydride/1-olefin copolymers by suspension polymerisation in the presence of special dispersion agents which are obtained by the reaction of a copolymer of maleic acid anhydride and a 1-olefin with an aliphatic monohydric alcohol or an aliphatic monoamine or a mixture thereof, at least 30 mol % of the anhydride groups being esterified to semi-esters or amidated to semi-amides. The copolymer powders obtained have a surprisingly narrow particle size distribution and can be used without grinding or sifting as reactive fillers for natural and synthetic rubbers. They also can be used for the production of paper coating agents as they dissolve easily and without residue in alkalis, ammonia or amines.

243314

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