US2002045686A1PendingUtilityA1

Rubber composition having improved wet skid resistance and rolling resistance

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Assignee: YOKOHAMA RUBBER CO LTDPriority: Aug 24, 2000Filed: Aug 8, 2001Published: Apr 18, 2002
Est. expiryAug 24, 2020(expired)· nominal 20-yr term from priority
Inventors:Tsukasa MaruyamaKazunori IshikawaYoshiaki Kirino
C08L 2205/03C08L 7/00C08K 9/08C08L 9/06Y10T152/10495C08L 21/00C08L 65/02C08L 39/00C08L 41/00
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Claims

Abstract

A rubber composition comprising (i) 100 parts by weight of a rubber and (ii) 10 to 180 parts by weight of a composite composed of an oxidative condensate obtained by oxidative condensation of a π-electron aromatic compound and carbon black and a pneumatic tire using the same as a tire tread.

Claims

exact text as granted — not AI-modified
1 . A rubber composition comprising (i) 100 parts by weight of a rubber and (ii) 10 to 180 parts by weight of a composite composed of an oxidative condensate obtained by oxidative condensation of a π-electron aromatic compound and carbon black.  
     
     
         2 . A rubber composition as claimed in  claim 1 , wherein the concentration of the oxidative condensate in the composite is 0.01 to 30% by weight.  
     
     
         3 . A rubber composition as claimed in  claim 1 , wherein the composite is composed of the oxidative condensate coated on the surface of the carbon black.  
     
     
         4 . A rubber composition as claimed in  claim 1 , wherein the π-electron aromatic compound is at least one compound selected from the group consisting of aniline, thiophene, pyrrole and their derivatives.  
     
     
         5 . A rubber composition as claimed in  claim 1 , wherein the oxidative condensate of the π-electron aromatic compound is a π-conjugated polymer compound.  
     
     
         6 . A rubber composition as claimed in  claim 5 , wherein the π-conjugated polymer is at least one compound selected from the group consisting of polyaniline, polypyrrole, polythiophene and their derivatives.  
     
     
         7 . A rubber composition as claimed in  claim 5 , wherein the amount of the π-conjugated polymer bonded to the composite comprising the π-conjugated polymer and carbon black is 0.01 to 30% by weight.  
     
     
         8 . A pneumatic tire using a rubber composition according to  claim 1  for a tire tread.  
     
     
         9 . A pneumatic tire using a rubber composition according to  claim 5  for a tire tread.

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