Patent ID: 9581922
Date: 2017-02-28
CPC Classifications: C01P,C08G,C09C,G03G

Claim:
1. A treated fumed silica particle comprising a modified polydialkylsiloxane on the surface thereof, wherein (a) the modified polydialkylsiloxane (i) comprises a relative proportion of T2 groups of 20% or less, and a relative proportion of T1 groups of 10% or less; and (ii) comprises groups having the structure: wherein X is a trialkylsilyl or dialkylsilyl; and R 1 , R 2 and R 3 are independently hydroxyl, alkyl, alkoxy, silyl, or siloxy; and (b) the treated fumed silica particle has a surface silanol content of about 1.3 to about 2.2 SiOH/nm