A rubber composition for a tire tread comprising: a diene rubber; a silica having an N 2 SA of from 194 to 225 m 2 /g and a CTAB of from 180 to 210 m 2 /g; and a polysiloxane represented by the average composition formula of formula (1) and contained in an amount of from 1 to 20 mass% with respect to the quantity of silica. (A) a (B) b (C) c (D) d (R 1 ) 3 SiO (4-2a-b-c-d-e)/2 [In the formula, A is a divalent organic group containing a sulfide group, B is a monovalent hydrocarbon group having from 5 to 10 carbon atoms, C is a hydrolyzable group, D is an organic group containing a mercapto group, and R 1 is a monovalent hydrocarbon group having from 1 to 4 carbon atoms, where 0 ¤ a < 1, 0 ¤ b < 1, 0 < c < 3, 0 < d < 1, 0 ¤ e < 2, 0 < 2a + b + c + d+ e < 4, and at least one of a and b is not 0]. Also provided is a pneumatic tire having tire treads formed using the rubber composition.
RUBBER COMPOSITION FOR TIRE TREAD, AND PNEUMATIC TIRE USING SAME
GUMMIZUSAMMENSETZUNG FÜR REIFENPROFIL UND LUFTREIFEN DAMIT
COMPOSITION DE CAOUTCHOUC POUR BANDE DE ROULEMENT, ET PNEU L'UTILISANT
2019-10-30
Patent
Electronic Resource
English
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08F MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind / C08G MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
RUBBER COMPOSITION FOR TIRE TREAD, AND PNEUMATIC TIRE USING SAME
European Patent Office | 2015
|Rubber composition for tire tread, and pneumatic tire using same
European Patent Office | 2018
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