Patent ID: 9574055
Date: 2017-02-21
CPC Classifications: C08J,C08K

Claim:
1. A polymer silica masterbatch comprising: a blend of a natural polymer or a synthetic polymer, the synthetic polymer is selected from the group consisting of: styrene-butadiene rubber, acrylonitrile-butadiene rubber, acrylonitrile-butadiene-styrene polymer, styrene-acrylonitrile copolymer, polybutadiene, polyisoprene, neoprene, polybutadiene-isoprene, and mixtures thereof, the natural polymer or the synthetic polymer with 5 weight percent to 80 weight percent of a compatibilized silica having 0.1 weight percent to 25 weight percent of the compatibilized silica weight percent of a plurality of silane coupling agents chemically bound to a surface of the compatibilized silica, wherein the plurality of silane coupling agents are present as an average tetrameric structure having a T.sup.3/T.sup.2 ratio of 0.75 or greater as measured by NMR, and wherein the plurality of silane coupling agents consist of: a. a polysulfide silane comprising an organosilicon derived from an organic silane having the structure: Z b. a non-polysulfide silane comprising an organosilicon derived from an organic silane having the structure  wherein: (i) X is a functional group selected from the group consisting of: hydrogen, an amino group, a polyamino alkyl group, a mercapto group, a thiocyanato group, an epoxy group, a vinyl group, a halogen, an acryloxy group and a methacryloxy group; (ii) y is an integer value equal to or greater than 0; and (iii) Z