Rubber composition and tire using the same

Details Rubber composition and tire using the same Rubber composition and tire using the same

2006-02-01

2009-10-27

Nutter, Nathan M (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S241000

Reexamination Certificate

active

07608667

ABSTRACT:
A rubber composition comprises as a rubber component (A) an aromatic vinyl compound-conjugated diene compound copolymer polymerized with a lithium-based polymerization initiator and having a polystyrene-conversion weight average molecular weight of 3.0×105−3.0×106as measured by a gel permeation chromatography and (B) 10-200 parts by mass, based on 100 parts by mass of the copolymer (A), of a hydrogenated styrene-butadiene copolymer having a polystyrene-conversion weight average molecular weight of 5.0×103−2.0×105as measured by a gel permeation chromatography and a bound styrene content of 10-70 mass % in which 25-50% of double bonds in butadiene portion is hydrogenated.

REFERENCES:
patent: 6458893 (2002-10-01), Tasaka et al.
patent: 7211630 (2007-05-01), Masaki et
patent: 3434973 (1986-04-01), None
patent: 1 514 901 (2005-03-01), None
patent: 2000-129037 (2000-05-01), None
patent: 2003-253051 (2003-09-01), None

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