|국가/구분||United States(US) Patent 등록|
|우선권정보||DE-10 2007 024 365 (2007-05-22)|
|§371/§102 date||20091027 (20091027)|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 16 인용 특허 : 10|
The invention relates to a hydrophobic fumed silica which is obtained by grinding a fumed silica which, as a result of silanization, has trimethylsilyl groups fixed on the surface; and to coating formulations comprising this silica.
1. A ground hydrophobic fumed silica comprising a fumed silica which has trimethylsilyl groups present on the surface, wherein the ground hydrophobic fumed silica has a tamped density of from 10 to 65 g/l;a specific BET surface area of from 210 to 225 m2/g; anda grindometer value of 12 μm or less for a dispersion time of 30 minutes or a value of less than 10 μm for a dispersion time of 60 minutes. 2. The silica according to claim 1, wherein the ground hydrophobic fumed silica is obtained by a process comprising grinding fumed silica with a pin mill or an...