Patent ID: 11858821
Assignee: THE GOODYEAR TIRE & RUBBER COMPANY
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 9:
10. The method of claim 1 wherein silica coupling agent is a compound of the formula:

Z-Alk-Sn-Alk-Z  (I)

Z-Alk-Sn-Alk  (II)

Z-Alk-SH  (III)

Z-Alk  (IV)

Si(OR1)4  (V), wherein Z is selected from the group consisting of:, , wherein R1 is an alkyl group containing from 1 to 4 carbon atoms, a cyclohexyl group, or a phenyl group; wherein R2 is an alkoxy group containing from 1 to 8 carbon atoms, or a cycloalkoxy group containing from 5 to 8 carbon atoms; wherein Alk is a divalent hydrocarbon of 1 to 18 carbon atoms and wherein n represents an integer from 2 to 8.