Institut Francais Du Pe'trole

Centre National De La Recherche Scientifique

Loreal Sa

Agro Industrie Recherches Et Developpements A.r.d.

Agro Industrie Recherches Et Developpements

Marguerite Rinaudo

Norbert Kohler

Michel Milas

Claude Dubief

Anthony Bresin

Rachel Auzely

Shirin Kadi

Erell Kubik

Rachel Auzely-Velty

The present invention relates to the use of a compound having the formula (I) wherein: n represents an integer varying from 720 to 6 200, and i varies from 1 to n, Rrepresents in particular OH, or a group of the formula (III) wherein k represents an integer varying from 1 to 17, and R'represents a linear or branched alkyl chain comprising p carbon atoms, wherein p is an integer varying from 1 to 17, with the proviso that k+p is not greater than 28, and preferably not greater than 20, and wherein at least one Rgroup represents a group of formula (III), for the preparation of a viscoelastic composition. 

Derivatives of hyaluronic acid, their preparation process and their uses

A process for preparing compounds from the polysaccharide betainate family, novel compounds so obtained, and their use in cosmetics or in dermatology, as well as the compositions, such as cosmetic or dermatological compositions, comprising said novel compounds.

Preparation of polysaccharide betainate type compounds, compounds obtained, their use and compositions comprising them

The filtrability of xanthan gum aqueous solutions is improved by an enzymatic treatment in two successive steps, the first step by means of a polysaccharase and the second step by means of a protease, the operating conditions of each step being such that the corresponding enzyme is active in said step.

Enzymatic process for the treatment of xanthan gums to improve the

Enzymatic treatment, in aqueous dispersion, of a xanthan gum containing bacteria cell residues and microgels, as impurities, by means of Basidiomycete cellulase, the aqueous dispersion having a pH from 3 to 7 and containing at least 0.1 equivalent/liter of at least one salt of alkali or alkaline-earth metal, said treatment being conducted at a temperature from 25.degree. to 65.degree. C., improved the injectivity and filtrability thereof.

Enzymatic clarification process for improving the injectivity and

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Grenoble, France

Marguerite Rinaudo