Abrasive, lower structure, precipitated silica composition...

A - Human Necessities – 61 – K

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A61K 8/25 (2006.01) A61Q 11/00 (2006.01)

Patent

CA 2505800

A transparent dentifrice is provided that has excellent abrasive performance. The dentifrice comprises from about 10 wt.% to about 13 wt.% water, and an abrasive, low-structure, precipitated silica having a refractive index of from about 1.439 to 1.450, an oil absorption of from about 90 ml/100g to about 120ml/100g, a light transmittance of greater than about 60%; and a Brass Einlehner abrasion value of less than about 5 mg loss/100,000 rev. Additionally the dentifrice has: a haze value of less than about 50; an RDA of about 50 to 200; and a refractive index of from about 1.439 to 1.450.

La présente invention a trait à un dentifrice transparent présentant une excellente efficacité abrasive. Le dentifrice comporte environ 10 % en poids à environ 13 % en poids d'eau, et une silice précipitée abrasive et de faible structure présentant un indice de réfraction d'environ 1,439 à 1,450, une absorption d'huile d'environ 90 ml/100g à environ 120 ml/100g, un facteur de transmission de lumière supérieure à environ 60 % ; et une valeur d'abrasion de Brass Einlehner inférieure à environ une perte de 5 mg pour 100,000 révolutions. En outre, le dentifrice présente : un valeur de trouble inférieure à environ 50, une abrasion dentaire radioactive d'environ 50 à 200, et un indice de réfraction d'environ 1,439 à 1,450.

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