Silicas for use in transparent toothpaste compositions

Details Silicas for use in transparent toothpaste compositions Silicas for use in transparent toothpaste compositions

1994-07-05

1996-04-30

Henley, III, Raymond

Drug, bio-affecting and body treating compositions

Dentifrices

423339, A61K 716, C01B 3312

Patent

active

055122710

ABSTRACT:
Amorphous silicas suitable for use as abrasives in transparent toothpastes can be prepared by a precipitation route. These silicas are distinguished by having a BET surface area of 100 to 450 m.sup.2 /g, a weight mean particle size of 5 to 15 microns, a plastics abrasion value of 16 to 26, a mean pore diameter from 2 to 12 nm, a transmission of at least 70% in the refractive index range from 1.430 to 1.443 and an oil absorption in the range from about 70 to about 130 cm.sup.3 /g.

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