C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/6441
C08L 25/10 (2006.01) C08C 19/44 (2006.01) C08F 293/00 (2006.01) C08J 5/00 (2006.01) C08L 9/00 (2006.01)
Patent
CA 1089587
A B S T R A C T A composition comprising a blend consisting of polymers or copolymers of one or more conjugated dienes having 4 or 5 carbon atoms per molecule, or copolymers thereof with a vinylaromatic compound, wherein one portion (A) consists of at least 60% by weight of components which have been modified by branchings comprising at least 20 monomer units each, while another portion (B) consists of similarly modified branched and/or linear components, with the proviso, that the intrinsic viscosity of the blend of A and B is within the range of from 1.3 to 5 dl/g, the ratio of the intrinsic viscosities of A and B amounts to at least 3 and does not exceed 50, and the amount of portion A in the blend lies within the range of from 40 to 94% by weight. The composition of the present invention is useful for many important applications, particularly as base materials in the manufacture of heavy-duty tires for automotive vehicles.
254880
Binsbergen Frederik L.
Raadsen Jacob
Van Ballegooijen Hendrik
Vreugdenhil Arie D.
Shell Canada Limited
Smart & Biggar
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