TRANSPARENT SILICA GEL/PRECIPITATED SILICA COMPOSITE MATERIALS FOR DENTIFRICES.

摘要

s rac A gel/precipitate silica composite for use in a dentifrice composition has a maximum light transmission of at least 25 % within a refractive index range of from about 1.432 to about 1.455; a relative flavor availability as compared to silica sand of at least 50 %; a CTAB of less than about 40; and, when incorporated into a dentifrice composition in an amount of 20 % by weight, said dentifrice has a RDA (Relative Dentin Abrasion) value of at most 130; a PCR (Pellicle Cleaning Ratio):RDA ratio of from 0.7 to 1.3; and a haze value after 24 hours of less than about 50 %.