Precipitated silicas

C - Chemistry – Metallurgy – 01 – B

Patent

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23/192, 167/320.

C01B 33/187 (2006.01) A61K 8/25 (2006.01) A61Q 11/00 (2006.01) C01B 33/193 (2006.01)

Patent

CA 1307904

R.3017 ABSTRACT A precipitated silica, suitable for use in toothpastes, has a high absorbency, i.e. 110 to 180cm3/100g, and good abrasivity with a plastics abrasion value of 12 to 20. The silica provides abrasion even at a relatively low particle size.

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