Patent ID: 6977065

Claim:
A precipitated silica having the following physico-chemical properties: BET surface area: 35 m 2 /g to 350 m 2 /g; BET/CTAB surface area ratio: 0.8 to 1.1; pore volume, PV: 1.6 ml/g to 3.4 ml/g; silanol group density, ml of NaOH 3 ml/(1.5 g) to 9.5 ml/(1.5 g); consumed in raising pH to 9: average aggregate size: 250 nm to 1500 nm; CTAB surface area: 30 m 2 /g to 350 m 2 /g; DBP volume: 150 ml/100 g to 300 ml/100 g; V 2 /V 1 by Hg porosimetry: 0.19 to 0.46; and DBP/CTAB: 1.2 to 3.5.