A method of manufacturing a rubber composition is disclosed. The method comprises: (A) forming a dispersion of hydrophobated silica in a rubber composition containing at least one diene-based elastomer by steps of: (1) blending a pre-hydrophobated silica/fatty acid composite with a rubber composition containing at least one diene-based elastomer to form a dispersion of the composite in the rubber composition; (2) blending zinc oxide with the rubber composition containing the composite dispersion; (3) reacting the zinc oxide with the fatty acid of the composite in the rubber composition to thereby substantially convert the fatty acid of the composite to a zinc salt thereof in situ within the rubber composition and to thereby substantially remove the fatty acid from the composite to yield a substantially fatty acid-free hydrophobated silica within the rubber composition, and/or substantially displacing the fatty acid of the composite of pre-hydrophobated silica directly without reacting with the fatty acid and to thereby expose thiol or polysulfide groups of the composite to aid in coupling the composite to at least one diene-based elastomer in the rubber composition; and (B) coupling the substantially fatty acid-free hydrophobated silica to the diene-based elastomer(s) in situ within the rubber composition.
PREPARATION OF SILICA REINFORCED RUBBER COMPOSITION, RUBBER COMPOSITION AND TIRE WITH COMPONENT
HERSTELLUNG VON SILICIUMDIOXIDVERSTÄRKTER KAUTSCHUKZUSAMMENSETZUNG, KAUTSCHUKZUSAMMENSETZUNG UND REIFEN MIT KOMPONENTE
PRÉPARATION DE COMPOSITION DE CAOUTCHOUC RENFORCÉ DE SILICE, COMPOSITION DE CAOUTCHOUC ET PNEU COMPRENANT LE COMPOSANT
2019-08-14
Patent
Electronic Resource
English
IPC: | 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 / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |
Preparation of silica reinforced rubber composition and tire with component thereof
European Patent Office | 2016
|European Patent Office | 2019
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