Process for coagulating polymer latices using screw- type...

Details Process for coagulating polymer latices using screw- type... Process for coagulating polymer latices using screw- type...

C - Chemistry, Metallurgy

08

F

6/100, 400/1116,

C08F 6/22 (2006.01) B29C 47/10 (2006.01) B29C 47/38 (2006.01) B29C 65/00 (2006.01) C08C 1/14 (2006.01)

Patent

CA 1091391

Abstract of the Disclosure A polymer latex is coagulated by passing the polymer latex and a coagulant through a screw-type extruder in which the latex and coagulant are mixed and mechanically worked under pressure by a rotating interrupted worm flight in cooperation with a plurality of stationary breaker members. At the down- stream end of the extruder, the coagulated polymer is compacted and extruded. The extruded polymer is characterized by relative- ly low moisture content, and the excess process liquid which drains from the compacted polymer is relatively free of un- coagulated polymer.

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