B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
400/1126, 152/12
B60C 1/00 (2006.01) C08L 7/00 (2006.01) C08L 9/06 (2006.01)
Patent
CA 1159985
Abstract of the Disclosure A pneumatic tire having a tread is disclosed, which comprises using in said tread a rubber composition containing 10 to 120 parts by weight of carbon black and 0.5 to 5 parts by weight of a vulcanizer based on 100 parts by weight of a novel styrene-butadiene copolymer rubber as defined below alone or a blend rubber of not less than 30 parts by weight of said copolymer rubber and not more than 70 parts by weight of the other diene rubber, said styrene-butadiene copolymer rubber being obtained by random copolymerization of styrene with 1,3-butadiene and satisfying the following requirements: (1) a content of bound styrene is 12 to 35% by weight; (2) a content of 1,2-bond in butadiene portion is 25 to 45% by weight; (3) a content of trans-1,4 bond in butadiene portion is not less than 42% by weight; (4) a value obtained by subtracting a content of cis-1,4 bond in butadiene portion from said content of trans-1,4 bond is not less than 8% by weight; (5) a relation between said content of bound styrene and said content of 1,2-bond is 65 ? 1.7 x the content of bound styrene (% by weight) + the content of 1,2-bond (% by weight) ? 100; and (6) a ratio of weight mean molecular weight (?w) to number mean molecular weight (?n) is not more than 2.3. - 21 -
385544
Ikegami Mikihiko
Ogawa Masaki
Bridgestone Tire Company Limited
Swabey Ogilvy Renault
LandOfFree
Pneumatic tires does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pneumatic tires, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pneumatic tires will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-340093