Title:
DENTIFRICE COMPOSITIONS
Document Type and Number:
WIPO Patent Application WO1996034594
Kind Code:
A1
Abstract:
Oral compositions, such as oral gels and toothpastes, containing a novel abrasive. A dentrifice composition, comprising: A) a precipitated silica abrasive composition, comprising: a) a precipitated silica, comprising particles wherein said particles have: i) a mean particle size of from 5 to 11 microns (s.d. < 9); ii) an Einlehner hardness of from 0.8 to 2.5 for abrasive to brass screen and from 5 to below 8 for abrasive to polyester screen; iii) an oil absorption of from 95 ml/100 gm to 135 ml/100 gm; and iv) a radioactive dentin abrasion of from 25 to below 80; and b) a precipitated silica, comprising particles wherein said particles have: i) a mean particle size of from 5 to 11 microns (s.d. < 9); ii) an Einlehner hardness of from 3 to 8 for abrasive to brass screen and from 8 to 11 for abrasive to polyester screen; iii) an oil absorption of from 70 ml/100 gm to below 95 ml/100 gm; and iv) a radioactive dentin abrasion of from 80 to 200 wherein at least 70% of all of said particles have a diameter of below 25 microns and wherrein the pellicle cleaning ratio is from 90 to 135 and the radioactive dentin abrasion is from 60 to 100 with a pellicle cleaning ratio/radioactive dentin abrasion ratio of from 1.25 to 1.75 and wherein the ratio of the silica in a) to the silica in b) is from 90:10 to 40:60, respectively; and B) from 0.1 % to 99 % of an orally-acceptable dentifrice carrier.
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Inventors:
RICE DAVID EARL
Application Number:
PCT/US1996/005499
Publication Date:
November 07, 1996
Filing Date:
April 19, 1996
Export Citation:
Assignee:
PROCTER & GAMBLE (US)
International Classes:
A61K8/21; A61K8/00; A61K8/25; A61K8/34; A61K8/36; A61K8/365; A61K8/40; A61K8/44; A61K8/46; A61K8/85; A61Q11/00; C01B33/14; C01B33/193; (IPC1-7): A61K7/16
Domestic Patent References:
| WO1996009809A1 | 1996-04-04 | |||
| WO1992002454A1 | 1992-02-20 | |||
| WO1990005113A1 | 1990-05-17 |
Foreign References:
| EP0236070A2 | 1987-09-09 | |||
| EP0535943A1 | 1993-04-07 | |||
| EP0331415A1 | 1989-09-06 | |||
| EP0272380A2 | 1988-06-29 | |||
| DE4237500A1 | 1994-05-11 | |||
| EP0170871A2 | 1986-02-12 | |||
| DE2310771A1 | 1974-09-12 | |||
| DE3527280A1 | 1986-02-06 | |||
| GB1409289A | 1975-10-08 | |||
| EP0308165A2 | 1989-03-22 |
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