A rubber composition and a tire comprising such a rubber composition is disclosed. The rubber composition comprises based on parts by weight per 100 parts by weight of the tread rubber (phr): (A) conjugated elastomer(s) comprising: (1) from 40 to 100 phr of a cis 1,4-polybutadiene rubber, wherein said cis 1,4-polybudiene rubber comprises: (a) from 40 to 100 weight percent of a functionalized cis 1,4-polybutadiene rubber, wherein said functionalized cis 1,4-polybutadiene rubber is: (b) from 0 to 60 weight percent of a non-functionalized cis 1,4-polybutadiene rubber, and (B) from 40 to 110 phr of a reinforcing filler comprising a combination of precipitated silica and a carbon black; wherein the precipitated silica is: (3) hydrophobated by reaction with said coupling agent in situ within said rubber composition rubber composition, or (4) pre-hydrophobated by reaction with said coupling prior to addition to said rubber composition; and wherein the coupling agent for the hydrophobation of the precipitated silica comprises bis (3-trialkoxysilylpropyl) polysulfide containing an average of from 2 to 3.8 connecting sulfur atoms in its polysulfidic bridge or an alkoxyorganomercaptosilane.
RUBBER COMPOSITION AND TIRE WITH TREAD CONTAINING FUNCTIONALIZED POLYBUTADIENE RUBBER AND REINFORCING FILLER CONTAINING PRECIPITATED SILICA
KAUTSCHUKZUSAMMENSETZUNG UND REIFEN MIT LAUFFLÄCHE MIT FUNKTIONALISIERTEM POLYBUTADIENKAUTSCHUK UND VERSTÄRKENDEM, FÄLLUNGSKIESELSÄUREHALTIGEM FÜLLSTOFF
COMPOSITION DE CAOUTCHOUC ET PNEU AYANT UNE BANDE DE ROULEMENT CONTENANT UN CAOUTCHOUC POLYBUTADIÈNE FONCTIONNALISÉ ET UNE CHARGE DE RENFORT CONTENANT DE LA SILICE PRÉCIPITÉE
2018-11-28
Patent
Electronic Resource
English
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
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