Process for forming acrylic elastomer containing...

Details Process for forming acrylic elastomer containing... Process for forming acrylic elastomer containing...

C - Chemistry, Metallurgy

08

L

400/4917, 400/65

C08L 27/06 (2006.01) B01F 17/00 (2006.01) C08F 265/04 (2006.01) C08L 33/08 (2006.01)

Patent

CA 1056542

ABSTRACT OF THE DISCLOSURE Elastomer-containing interpolymers are prepared by the suspension polymerization of vinyl chloride in the presence of an aqueous emulsion of particles comprising a crosslinked acrylic elastomer having a glass transition temperature (Tg) of less than about 25°C., said emulsion containing from 0.2% to 5.0% by weight of a sulfonate salt of an ethoxylated alkyl phenol anionic emulsifier to insure smooth and clean running of both the emulsion and suspension steps. From about 0.1% to 0.5% of a salt of a polyvalent metallic cation or quaternary ammonium salt can also be added to the suspension batch as a coagulating agent after the suspension reaction has been completed to completely pre- cipitate the latex in the second step and give a clean process effluent. The interpolymers may be used as modifiers for the reinforcement of a large variety of rigid plastics whereby excellent impact strength is imparted without harming any other physical properties of the rigid plastics so treated.

229785

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