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AssigneeThe Goodyear Tire & Rubber Company
InventorsGiorgio Agostini, Thierry Florent Edme Materne, Marc Junio, Friedrich Visel, Uwe Ernst Frank
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The present invention relates to asymmetrical siloxy compounds of the formulae ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are independently selected from the group consisting of alkoxy radicals having from 1 to 8 carbon atoms; R.sup.4 is selected from the group consisting of alkylene groups having from 1 to 15 carbon atoms and arylene and alkyl substituted arylene groups having from 6 to 10 carbon atoms; R.sup.5 is selected from the group consisting of alkylene groups having from 1 to 15 carbon atoms, arylene and alkyl substituted arylene groups having 6 to 10 carbon atoms; y is 2 to 8; X is selected from the group consisting of ##STR2## W is selected from the group consisting of ##STR3## and Z is 1 to 8
A compound of the formula ##STR25## wherein R.sup.1, R.sup.2 and R.sup.3 are independently selected from the group consisting of alkoxy radicals having from 1 to 3 carbon atoms;
A method of processing a silica-filled rubber composition which comprises (i) 100 parts by weight of at least one sulfur vulcanizable elastomer selected from conjugated diene homopolymers and copolymers and from copolymers of at least one conjugated diene and aromatic vinyl compound;
A sulfur vulcanizable rubber composition comprising an elastomer containing olefinic unsaturation, silica and a compound of the formula wherein R.sup.1, R.sup.2 and R.sup.3 are independently selected from the group consisting of alkoxy radicals having from 1 to 3 carbon atoms;
Dependencies are inferred from the claim text.