Silica-containing rubber compositions
AssigneeBayer Aktiengesellschaft
InventorCarl Walter von Hellens
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Abstract
The invention relates to an elastoemeric composition which comprises: (I) a vinyl solution SBR/silica-containing masterbatch, which contains preferably from 40 to 120 parts by weight of silica per 100 parts by weight of polymer, and (ii) a high cis polybutadiene/silica-containing masterbatch, which contains preferably from 40 to 120 parts by weight of silica per 100 parts by weight of polymer wherein silica has been hydrophobicized.
Claims24
A rubber masterbatch composition comprising a solution SBR (styrene-butadiene rubber) and hydrophobicized silica particles, wherein the solution SBR comprises a low vinyl, low styrene solution SBR, wherein the low vinyl, low styrene solution SBR comprises a vinyl content of less than about 40% and a styrene content in the range of from about 5% to about 25%.
A vulcanizate produced from an elastomeric composition comprising a solution SBR (styrene-butadiene rubber) and hydrophobicized silica particles, wherein the solution SBR comprises a low vinyl, low styrene solution SBR, wherein the low vinyl, low styrene solution SBR comprises a vinyl content of less than about 40% and a styrene content in the range of from about 5% to about 25%.
Dependencies are inferred from the claim text.