Process to produce tack-free rubber particles

Details Process to produce tack-free rubber particles Process to produce tack-free rubber particles

C - Chemistry, Metallurgy

08

J

117/47

C08J 3/12 (2006.01) B01J 2/04 (2006.01) B01J 2/30 (2006.01) B29B 9/00 (2006.01) B29B 9/16 (2006.01) C08C 2/00 (2006.01) C08F 6/12 (2006.01) C08F 6/26 (2006.01) C08J 3/215 (2006.01)

Patent

CA 2036083

A process to produce a free flowing fine polymer powder is provided. The process comprises the steps of: providing a polymer cement comprising a polymer either melt or dissolved in a solvent to form a polymer cement; dispersing an antiblocking agent within a stream consisting of steam to form atomization steam; atomizing the polymer cement; contacting the atomized polymer cement with the atomization steam; and recovering polymeric particles. Polymeric particles so prepared have an average particle size of between 100 and 1000 microns. In a preferred embodiment, the polymers produced are rubbery polymers which are free flowing.

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