High-structure precipitated silicas

Details High-structure precipitated silicas High-structure precipitated silicas

C - Chemistry, Metallurgy

01

B

C01B 33/12 (2006.01) A23K 1/00 (2006.01) A23K 1/175 (2006.01) B01J 21/08 (2006.01) B01J 32/00 (2006.01) C01B 33/193 (2006.01) C08K 3/36 (2006.01) B01J 35/10 (2006.01)

Patent

CA 2363701

The invention relates to high structure precipitated silicas that have been subjected to a short retention drying process, a process to manufacture these and the use thereof. The precipitated silicas are characterized by the following physico-chemical characteristics: pH (5% in water) (ISO 787-9) 3 - 8 BET surface area (DIN 66131) m2/g 400 - 600 DBP absorption value (DIN 53601,in relation to g/100g 380 - 420 dried substance) Tapped density (ISO 787-11 ) g/I 100 - 200 ALPINE sieve residue > 63µ (ISO 8130-1) % 0.1 - 40

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