Patent ID: 9738776
Date: 2017-08-22
CPC Classifications: B01D,C08F,C08J,C08K,C08L

Claim:
1. A process for making a silica masterbatch, comprising the steps of: (a) hydrophobating silica by: B is —SCN, R—C(═O)S, (if q=1) or S Alk is a straight chained or branched bivalent hydrocarbon radical; R is an alkyl group containing 1 to 18 carbons; m is 0 or 1; p is 0 or 1; m+p=1; q is 1 or 2; Ar is an arylene radical having from 6 to 12 carbon atoms; and x is a number from 2 to 8; (b) making a polymer latex using a process for making an emulsion-made rubber; (c) mixing the compatibilized silica slurry into the polymer latex; (d) coagulating the polymer latex from step (c); and (e) recovering a first silica-filled rubber, wherein either