Patent ID: 8152916
Filing Date: 2012-04-10
Classification: B82Y,C01B,C01P,C08K,C09C,C09D,Y10T

Abstract:
1. A hydrophobic fumed silica, obtained by a process comprising grinding an unground fumed silica, wherein the unground fumed silica, as a result of silanization, comprises octylsilyl groups fixed on a surface, wherein the hydrophobic fumed silica has a lower grindometer value than the unground fumed silica, a specific BET surface area of 100 to 250 m a tamped density of 10 to 100 g/L, a mean particle size according to Cilas of 5.0 to 20.0 μm, and in a coating formulation, a haze value of less than 16.