Societe D'exploitation De Produits Pour Les Industries Chimiques Seppic

Andre Benattar

Jerome Guilbot

Herve Rolland

Sebastien Kerverdo

Guy Tabacchi

Laetitia Cattuzzato

Sandy Dumont

Marie-Francoise Gayral Chirac

Stephanie Garcel

Andrey Bonnardel

A process for preparing a composition (C) represented by the formula (I): HO&#x2014;CH&#x2014;(CHOH)&#x2014;CH&#x2014;O-(G)-H, in which G represents the remainder of a reducing sugar, n is an integer equal to 2, 3 or 4 and x, which indicates the mean degree of polymerization of the remainder G, represents a decimal number greater than 1 and less than or equal to 5, characterized in that the process includes at least one step a) of reacting a polyol of formula (A): HO&#x2014;CH&#x2014;(CHOH)&#x2014;CH&#x2014;OH, in which n is an integer equal to 2, 3 or 4, with a reducing sugar of formula (II): HO-G-H, in which G represents the remainder of a reducing sugar, in the presence of an acid catalyst (C), and in that the acid catalyst (C) is chosen from phosphorous acid, phosphoric acid and polyphosphoric acid.

Process for preparing polyol glycosides

A process for drilling cavities in subterranean formations includes a step of removal of the drill cuttings using an aqueous fluid in the form of a foam, obtained by mixing: an aqueous composition (Ci) including, per 100% by weight: from 0.5% by weight to 25% by weight of a compound of formula (I): R&#x2014;C(O)&#x2014;NH&#x2014;CH(COOM)-(CH)&#x2014;COOM' (I) in which n represents an integer equal to 1 or 2, Rrepresents a linear or branched, saturated or unsaturated aliphatic hydrocarbon-based radical including from eight to eighteen carbon atoms, M represents a monovalent cation and M&#x2032;, which is identical to or different from M, represents a hydrogen atom or a monovalent cation; or of a mixture of compounds of formula (I), and from 75% to 99.5% by weight of water, with a gas or a mixture of gases, chosen from air, nitrogen or carbon dioxide.

Process for drilling subterranean cavities

Compound with formula (I), wherein R' and R&#x2033; represent a hydrogen atom, a monovalent radical with formula (IIa), or a monovalent radical with formula (IIb), it being understood that at least one of the R&#x2032; or R&#x2033; radicals does not represent a hydrogen atom and that when the R&#x2032; and R&#x2033; radicals do not represent a hydrogen atom, R&#x2032; and R&#x2033; are identical; method for preparing and using in cosmetics and as a drug.

Esters of N-acylated derivatives of amino acids and isosorbide, method for preparing same, and use thereof in cosmetics and as drug

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Castres, France

Andre Benattar