Composition containing a peroxide vulcanizing agent or...

Details Composition containing a peroxide vulcanizing agent or... Composition containing a peroxide vulcanizing agent or...

C - Chemistry, Metallurgy

08

F

400/101, 400/203

C08F 4/36 (2006.01) C08F 4/02 (2006.01) C08F 291/02 (2006.01) C08K 5/14 (2006.01)

Patent

CA 1186832

ABSTRACT OF THE DISCLOSURE: A non-bleeding, predispersed composition useful for dispersing a peroxide vulcanizing agent or coagent into a rubber or plastic stock is disclosed which comprises (A) from about 20 to about 70 percent by weight of a peroxide vulcanizing agent or coagent, and (B) a multi-stage graft copolymer comprising (1) from about 70 to about 90 percent by weight of a hard portion made by graft polymerizing (a) a monomer or monomers selected from the group consisting of lower alkyl methacrylates, styrene, and mixtures thereof, and (b) a small out effective amount of a cross-linking agent for said monomer or monomers, in any order onto (2) from about 10 to about 30 percent by weight of a rubbery portion comprising a polymer or copolymer made by polymerizing (a) a monomer selected from the group consisting of butadiene and lower alkyl acrylates or (b) a mixture of monomers selected from the group consisting of styrene and butadiene, and acrylonitrile and butadiene.

425924

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