Patent ID: 9688784
Date: 2017-06-27
CPC Classifications: C01P,C04B,C08F,C08K,C08L,C09C

Claim:
1. A process for producing treated filler comprising: (a) treating a slurry comprising untreated filler wherein said untreated filler has not been previously dried, with a treating composition comprising a treating agent, thereby forming a treated filler slurry; and (b) drying said treated filler slurry to produce treated filler, wherein said treating agent comprises a polymer comprising (i) at least one first group that interacts with said untreated filler and (ii) at least one second group that interacts with a rubber matrix into which said treated filler is incorporated, wherein the treating composition further comprises a coupling agent comprising an organosilane selected from the group consisting of (4-chloromethyl-phenyl) trimethoxysilane, (4-chloromethyl-phenyl) triethoxysilane, [2-(4-chloromethyl-phenyl)-ethyl]trimethoxysilane, [2-(4-chloromethyl-phenyl)-ethyl]triethoxysilane, (3-chloro-propenyl)-trimethoxysilane, (3-chloro-propenyl)-triethoxysilane (3-chloro-propyl)-triethoxysilane, (3-chloro-propyl)-trimethoxysilane, trimethoxy-(2-p-tolyl-ethyl)silane, triethoxy(2-p-tolyl-ethyl)silane, and combinations thereof.