C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 236/04 (2006.01) B60C 1/00 (2006.01) C08F 279/04 (2006.01) C08F 285/00 (2006.01) C08L 9/00 (2006.01) C08L 21/00 (2006.01)
Patent
CA 2080438
A novel rubbery polymer suitable for use in tire tread formulations is characterized in that the polymer comprises polymer particles which have from 2 to 6 domains, each domain comprising from 100 to about 40 weight percent of at least one C4 to C8 conjugated diolefin monomer, from 0 to about 60 weight percent of at least one C3 to C6 alkenyl nitrile monomer and from 0 to about 60 weight percent of at least one C8 to C12 monovinylidene aromatic monomer for a total of 100 weight percent of the domain, the monomer composition and/or molecular weight of one domain of each polymer particle differing from the monomer composition and/or molecular weight of each of the other domains of the polymer particle. A process for the production of the rubbery polymer is provided together with a rubber composition comprising the rubbery polymer and at least one diene-based polymer.
Lanxess Inc.
Polysar Rubber Corporation
Smart & Biggar
LandOfFree
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