Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1982-04-21
1983-08-09
Seccuro, Carman J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525304, 525308, 525309, 525310, 525315, 525316, 524534, 524533, 523206, 523211, 523351, C08L 5104, C08L 5502, C08J 320, C08J 324
Patent
active
043979920
ABSTRACT:
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 but 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.
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Johansson Anders H.
Leo Thomas J.
Seccuro Carman J.
Wyrough and Loser, Inc.
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