Rhodia Operations

Rhodia Chimie

Rhone-poulenc Chimie

Rhodia Polyamide Intermediates

Centre National De La Recherche Scientifique

Invista North America S.a.r.l.

Solvay Sa

Rhodia Fiber & Resin Intermediates

Rhodia Poliamida E Especialidades Ltda

Vencorex France

Rhodia Polyamides Intermediates

Specialty Operations France

Invista Technologies S.a.r.l.

Invista Textiles Limited

Philippe Marion

Olivier Back

Roland Jacquot

Damien Bourgeois

Rémy Leroy

Blaise Didillon

Jean-Christophe Galland

Cécile Rosier

Philippe Leconte

Mikel Morvan

Georges Cordier

Louis Le Bris

Pierre Fouilloux

Didier Morvan

Patrick Moreau

Faouzi Joulak

Remy Leroy

Jean-Pierre Damon

Jean-Marie Bernard

Sergio Mastroianni

Denis Revelant

Pascal Herve

Pascal Metivier

Hong Liu

Claude Mercier

Dominique Horbez

Dominique Labarre

Stéphane Streiff

Danilo Zim

Christophe Geantet

Virginie Belliere-Baca

Jean-Emile Zanetto

Pascaline Garbey

Zhen Yan

Olivier Jentzer

Lise Trouillet-Fonti

Jean-Pierre Brunelle

Sophie Deroo

Thomas Galeandro-Diamant

Gerald Bocquenet

Hocine Kabir

Stephanie Foucher

Roberto Company

Amélie Hynaux

Dorothée Laurenti

Jean-Emille Zanetto

Joseph Lopez

G&eacute;rard Berrod

Philippe Perrona

Georges Dovergne

Laurence Grimaud

Jean-Luc Coudret

Bernard Chambost

Laurent Elkaim

Corinne Mathieu

Gilbert Guidot

Loic Baussaron

Bright Kusema

Matthieu Corbet

Frédéric Colbeau-Justin

Damien Cartigny

Stéphanie Foucher

A modified silica comprising organic molecules absorbed on the surface of a precipitated silica is provided. The modified silica is particularly suitable for use as filler in elastomeric mixtures as it provides improvement in the processing of the silica/elastomer mixtures. A process for preparing the precipitated silica is also provided.

Process for the preparation of modified silica, modified silica and its uses

The present invention relates to a method of synthesizing at least one organic acid comprising oxidizing glycolaldehyde with nitric acid in the presence of a solvent. Advantageously, it is an industrially applicable process, which prepares organic acid, notably glycolic acid and/or glyoxylic acid in a high yield based on bio-based feedstocks.

Method of oxidizing glycolaldehyde using nitric acid

The present invention pertains to a process for the cross-ketonization (Piria reaction) between an aryl carboxylic acid and an aliphatic carboxylic acid using a metal-based compound and a slight or a moderate excess of aryl carboxylic acid. A good selectivity, up to 99 mol %, can be achieved. The aryl aliphatic ketone can be used for the preparation of surfactants and other downstream products.

Process for the catalytic decarboxylative cross-ketonization of aryl and aliphatic carboxylic acid

Process Pfor the manufacture of a secondary fatty alcohol, said process Pcomprising synthesizing an internal ketone K1 by a process Pcomprising the decarboxylative ketonization reaction of a fatty acid or the like in a liquid phase with a metal compound as catalyst in a reaction medium, wherein a ketone Kat liquid state, which is identical or similar to the internal ketone K, is introduced into the reaction medium, and subjecting the internal ketone Kto a hydrogenation reaction with hydrogen gas as hydrogenating agent to form the secondary fatty alcohol. Use of the secondary fatty alcohol manufactured by the process Pfor the manufacture of an internal olefin or of an internal olefin sulfonate.

Processes for the manufacture of secondary fatty alcohols, internal olefins and internal olefin sulfonates

Compositions suitable for enhanced oil recovery comprising a) a mixture of &#x3b1;-sulfocarbonyl compounds of formulae (1) and (2) in a mixture ratio (1) to (2) of from 1:99 to 99:1 wherein R, Rand R, which may be the same or different at each occurrence, are hydrogen or a linear or branched alkyl chain having 1 to 20 carbon atoms, Rand R, which may be the same or different at each occurrence, may be a linear or branched alkyl group having 4 to 24 carbon atoms and in which the alkyl chain may comprise one or more cycloaliphatic groups, and X is H or a metal forming a salt with the sulfonate group, and b) a salt containing aqueous solution.

Formulations for enhanced oil recovery comprising sulfonates

Method (M) for the preparation of an end compound from an internal ketone, said method comprising: &#x2014;synthesizing the internal ketone by a process (P) for the decarboxylative ketonization of a fatty acid, a fatty acid derivative or a mixture thereof in a liquid phase with a metal compound as catalyst in the substantial absence of added solvent, wherein the fatty acid, fatty acid derivative or mixture thereof is added in sequential steps, the first step taking place at a temperature sequentially at a temperature from 100&#xb0; C. to 270&#xb0; C., &#x2014;causing the internal ketone to react in accordance with a single or multiple chemical reaction scheme involving at least one reagent other than the internal ketone, wherein at least one product of the chemical reaction scheme is the end compound that is not further caused to be chemically converted into another compound.

Method for making end compounds from internal ketones issued from the decarboxylative ketonization of fatty acids or fatty acid derivatives

A compound of general formula (I) or (II), wherein Rand Rindependently represent a C-Caliphatic group, Rto R, which may be the same or different at each occurrence, represent hydrogen or a C-Calkyl group, Xand X, which may be the same or different at each occurrence, represent a linear or branched divalent hydrocarbon radical with 1 to 24 carbon atoms which can be optionally substituted and/or interrupted by one or more heteroatoms or heteroatom containing groups, and Rand R, which may be the same or different at each occurrence, represent a group selected from &#x2014;O, -Alk-CH(OH)&#x2014;CH&#x2014;SO&#x2014; and -Alk-CO&#x2014; wherein Alk represents an alkylene group. 

Twin tail amine compounds and their zwitterionic derivatives

Process (P) for the decarboxylative ketonization of fatty acids, fatty acid derivatives or mixtures thereof in the liquid phase with metal compounds as catalyst wherein the fatty acids, fatty acid derivatives or mixtures thereof are added sequentially. Downstream chemistry can be realized starting from internal ketones obtained by process (P), especially in order to design and develop new surfactants.

Process for the decarboxylative ketonization of fatty acids or fatty acid derivatives

The present invention is directed to a process for synthesizing an internal ketone K1 by decarboxylative ketonization reaction of a fatty acid, a fatty acid derivative or a mixture thereof in a liquid phase with a metal compound as catalyst in a reaction medium, said process being characterized in that a ketone K2 at liquid state, which is identical or similar to the ketone K1, is introduced into the reaction medium. The so-synthesized internal ketone K1 can be used for the preparation of a variety of end compounds, including surfactants having a twin-tail structure or a Gemini structure.

The instant invention relates to surfactants having the following formula (I) wherein: each of Rand Ris a linear or branched, saturated or unsaturated, hydrocarbon chain, each of Rand Ris a alkyl chain having 1 to 10 carbon atoms, each of (E) and (E) is a divalent hydrocarbon radical, A is: a group a carboxylate group &#x2014;COO(optionally in all or part in the form &#x2014;COOH); or a sulfonate group &#x2014;SO(optionally in all or part in the form &#x2014;SOH). The invention also relate to the preparation of these surfactants and their use in oil extraction, especially in EOR applications. 

Zwitterionic surfactants suitable for enhanced oil recovery

Compositions suitable for enhanced oil recovery comprising a) a mixture of a-sulfocarbonyl compounds of formula (1) and (2) in a mixture ratio (1) to (2) of from 1:99 to 99:1 wherein R, Rand R, which may be the same or different at each occurrence, are hydrogen or a linear or branched alkyl chain having 1 to 20 carbon atoms, Rand R, which may be the same or different at each occurrence, may be a linear or branched alkyl group having 4 to 24 carbon atoms and in which the alkyl chain may comprise one or more cycloaliphatic groups, and X is H or a metal forming a salt with the sulfonate group, and b) a salt containing aqueous solution. 

The present invention relates to a new process for synthesizing an amido alkyl betaine starting from a linear alcohol having from 8 to 22 carbon atoms, to an amido alkyl betaine prepared by the process with increased viscosity in water, and also to use thereof as a viscoelastic surfactant in oil and gas applications and home personal care applications. The present invention also relates to a process for synthesizing an amido amine starting from a linear alcohol having from 8 to 22 carbon atoms, and to an amido amine prepared by the process.

Process for synthesizing an amido alkyl betaine starting from an alcohol, an amido alkyl betaine prepared by the process with increased viscosity, and use thereof as a viscoelastic surfactant

Process for the manufacture of an amino ester of formula (I) R&#x2014;O&#x2014;C(O)&#x2014;(CH)&#x2014;NH(I) in which n is an integer from 10 to 15 from an unsaturated ester responding to formula (II) R&#x2014;O&#x2014;C(O)&#x2014;(CH)&#x2014;CH&#x2550;CH&#x2014;R(II) in which Ris either H or a saturated alkyl group containing from 1 to 5 carbon atoms; Ris either H or an alkyl group containing from 1 to 10 carbon atoms, either saturated or containing 1 or 2 unsaturations and bearing optionally a hydroxyl, a carboxylic or an ester group, and m is equal to 7, 8, 9, 10 or 11; said process comprising: submitting the unsaturated ester of formula (II) to a catalytic cross-metathesis reaction with a pentenenitrile chosen among 2-pentenenitrile or 3-pentenenitrile in order to obtain a ester-nitrile responding to formula (III) R&#x2014;O&#x2014;C(O)&#x2014;(CH)&#x2014;CH&#x2550;CH&#x2014;(CH)&#x2014;CN (III) in which m is equal to 7, 8, 9, 10 or 11 and p is equal to 0 or 1, and submitting the obtained ester-nitrile of formula (III) to an hydrogenation in order to obtain the amino ester of formula (I).

Process for the manufacture of an amino ester

A process for extraction of ferulic acid present in an aqueous phase, obtained by treatment of at least one plant material, and also containing polysaccharides, is described, said process comprising at least the following steps:

Optimized process for extraction of ferulic acid with pretreatment

Growing community of inventors

Vernaison, France

Philippe Marion