The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 23, 1999
Filed:
Jul. 18, 1997
Adrien Dromard, Lyons, FR;
Jean-Francois Viot, Irigny, FR;
Rhodia Chimie, Courbevoie, FR;
Abstract
Silica compatible with flavors, exhibiting, at an RP/DA abrasivity lower than or equal to 10, a compatibility with flavors which is higher than 10% and, at an RP/DA abrasivity higher than 10, a compatibility with flavors of at least 30%. Process for the preparation of flavor-compatible silica by treating the surface of a silica originating from the reaction of an alkali metal silicate with an inorganic or organic acidic agent, the silica being in dry form or in an aqueous suspension, with the aid of an organic compound capable of developing hydrogen bonds or ionic bonds with, respectively, the Si--OH silanol groups or the SiO.sup.- anionic groups at the surface of the said silica to be treated, the said treated silica being subsequently, if necessary, isolated and/or washed and/or dried. Use in dentifrice compositions and dentifrice compositions including the said silica.