Patent ID: 7262233
Filing Date: 2007-08-28
Classification: C01P,C08K,C09C,Y10T

Abstract:
1. A precipitated silica substrate treated with a polysiloxane, and an organosilane, wherein the organosilane is described by the formula: wherein R is a long-chain hydrocarbon group having between about 8 to about 30 carbon atoms, and optionally contains organofunctional groups selected from the group consisting of vinyl, methacryl, amino, sulfur, and epoxy groups; R′ and R″ are independently selected from the group consisting of a methyl and an ethyl; and X is either 0 or 1; wherein said precipitated silica substrate is treated first with said polysiloxane and subsequently with said organosilane; wherein said precipitated silica substrate imparts a shear thinning index measured as STI=V