ABRASIVE SILICAS FOR TOOTHPASTE COMPOSITIONS

摘要

The object of the present invention is the use of silicas as abrasive agents in toothpaste compositions, said silicas having: I) a BET specific surface area in the range of 20 to 75 m<2>/g; ii) a CTAB specific surface area in the range of 16 to 45 m<2>/g; iii) an RDA abrasiveness in the range of 120 to 160; iv) a refractive index in the range of 1.435 to 1.450; v) a DOP oil absorption value in the range of 70 to 105 ml/100g; vi) a compatibility of at least 50 % with organic amino compounds. The invention also provides a process for producing said silicas and the toothpaste compositions containing them.