Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
2006-04-14
2008-07-29
Choi, Ling-Siu (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
C524S526000, C524S525000, C524S572000, C524S723000, C524S742000, C524S714000, C524S493000
Reexamination Certificate
active
07405256
ABSTRACT:
There is provided a run flat tire having a side reinforcing layer in which low exothermic property and high hardness are compatible and durability is improved. A rubber composition containing 10 to 100 parts by weight of carbon black with a nitrogen adsorption specific area of 30 to 100 m2/g and a dibutyl phthalate oil absorption amount of 50 ml/100 g or more and 2 parts by weight or more of sulfur or a sulfur compound, based on 100 parts by weight of a rubber component containing 10 to 50% by weight of a conjugated diolefin polymer or a copolymer of a diolefin and an aromatic vinyl compound having a primary amino group and an alkoxysilyl group and having a glass transition point of −30° C. or less in which a bifunctional or more monomer is copolymerized in a polymer chain and/or at least a portion of a (co)polymer chain is coupled with a bifunctional or more coupling agent, and a run flat tire having a side reinforcing layer comprising the rubber composition.
REFERENCES:
patent: 2001/0051685 (2001-12-01), Obrecht et al.
patent: 1 149 868 (2001-10-01), None
patent: 1 297 974 (2003-04-01), None
patent: 2001-213999 (2001-08-01), None
patent: 2002-103912 (2002-04-01), None
patent: 2002-155169 (2002-05-01), None
patent: 2003-292685 (2003-10-01), None
patent: 2004168903 (2004-06-01), None
Birch & Stewart Kolasch & Birch, LLP
Choi Ling-Siu
Sumitomo Rubber Industries Ltd.
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