Patent ID: 8440750

Claim:
An allyl functionalized precipitated silica comprised of a precipitated silica containing at least one allyl group substituent; wherein said allyl functionalized precipitated silica is represented by a general formula (I): where Z represents the precipitated silica; R 2 and R 3 are the same or different radicals comprised of an alkyl group containing from 1 to 4 carbon atoms, a cycloalkyl group, a phenyl group, and alkene group containing from 3 to 18 carbon atoms or cycloalkene radical having from 5 to 8 carbon atoms; and R 1 is an allyl hydrogen containing radical where a is an integer in a range of from 0 to 2, b is an integer in a range of from 0 to 2 and c is an inter in a range of from 1 to 3.