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The present invention relates to the use in a silica-filled rubber composition of an aminosilane compound of the formula [Figure] I wherein R1, R2 and R3 are independently selected from the group consisting of alkoxy radicals having from 1 to 8 carbon atoms, alkyl radicals having 1 to 8 carbon atoms

The present invention relates to the use in a silica-filled rubber composition of an aminosilane compound of the formula [Figure] I wherein R1, R2 and R3 are independently selected from the group consisting of alkoxy radicals having from 1 to 8 carbon atoms, alkyl radicals having 1 to 8 carbon atoms and aryl radicals having 6 carbon atoms, with the proviso that at least one of R1, R2 and R3 is an alkoxy radical; R4 is selected from the group consisting of alkylene groups having from 1 to 18 carbon atoms and arylene and alkyl substituted arylene groups having from 6 to 10 carbon atoms; R5 is selected from the group consisting of hydrogen and alkyl groups having from 1 to 15 carbon atoms.

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A method of processing a silica-filled rubber composition which consists essentially of (i) 100 parts by weight of at least one sulfur-vulcanizable elastomer selected from the group consisting of conjugated diene homopolymers and copolymers and from copolymers of at least one conjugated diene and ar

A method of processing a silica-filled rubber composition which consists essentially of (i) 100 parts by weight of at least one sulfur-vulcanizable elastomer selected from the group consisting of conjugated diene homopolymers and copolymers and from copolymers of at least one conjugated diene and aromatic vinyl compound; (ii) 10 to 250 phr of particulate precipitated silica; (iii) 0.05 to 10 phr of an aminosilane compound consisting of the formula [Figure] I wherein R1, R2 and R3 are independently selected from the group consisting of alkoxy radicals having from 1 to 8 carbon atoms, alkyl radicals having 1 to 8 carbon atoms and aryl radicals having 6 carbon atoms, wherein at least one of R1, R2 and R3 is an alkoxy radical; R4 is selected from the group consisting of alkylene groups having from 1 to 18 carbon atoms and arylene and alkyl-substituted arylene groups having from 6 to 10 carbon atoms; and R4 is selected from the group consisting of hydrogen and alkyl groups having from 1 to 15 carbon atoms; and (iv) 0.05 to 10 phr of a sulfur-containing organosilicon compound consisting of the formula: [Figure] II or [Figure] III wherein n is an integer of from 2 to 8.