Arkema France

Atofina

Centre National De La Recherche Scientifique

Elf Atochem S.a.

Arkema Inc.

Elf Antar France

Total Petrochemicals France

Arkema (Formerly Atofina)

Compagnie Generale Des Etablissements Michelin

Université De Rennes 1

Université De Rennes I

Jean-Luc Couturier

Jean-Luc Dubois

Olivier Guerret

Emmanuel Custodero

Manuel Hidalgo

Nicolas Dufaure

Paul Tordo

Nicolas Seeboth

Didier Gigmes

Denis Bertin

Eric Monflier

Paul Bourdauducq

Sylvain Marque

Paul Maldonado

Guillaume Le

Laurent Germanaud

Thierry Briffaud

Jacques Kervennal

Jean-François Carpentier

Julien Jouanneau

Bruno Vuillemin

José-Carlos Araujo Da Silva

Thierry Senninger

Bruno Van Hemelryck

Sandra Grimaldi

Etienne Fleury

Sergey Ivanov

Fabien Debaud

Berth Jan Deelman

Gerard Van Koten

Stéphanie Magnet

Yves Castanet

Markus Brandhorst

Jean-François Devaux

Philippe Leduc

Christophe Le Mercier

Sophie Robin

Pierre Dixneuf

Serguey Ivanov

Florence Chauvin

Oleg Ugolnikov

Sébastien Logette

Jean-Francois Lutz

Christian Bonardi

Anne-Frédérique Salit

Bruno Hemelryck

Pierre-Emmanuel Dufils

Jérémy Ternel

Pierre-emmanuel Dufils

Virginie Cheron

Hendrik Hagen

Pierre Charles Goffinet

Christiane Henriet-Bernard

Andr&eacute; Mortreux

Thomas Mathivet

Pierre Hebrard

Xiaowei Miao

Claude Lion

Christian Haroux

Cedric Fischmeister

Didier Belluard

Christian Bruneau

Jean Sigoure

Bouchra Taha

The invention relates to a mixture of polyoxymethylene dialkyl ethers (POM) having a specific molecular distribution of n as well as its preparation method. The invention also relates to a composition comprising: It also relates to a non-therapeutic method of preserving and/or embalming a dead human or animal body using the composition, such as the use of this composition for anatomopathological purposes.

Aqueous composition based on polyoxymethylene dialkyl ethers (POM) and their use for the preservation and/or embalming of the human or animal body

The present invention relates to a composition which comprises at least one &#x3b1;,&#x3c9;-amino-alkanoic acid or ester and at least one alkanoic ester or acid, characterised in that: the &#x3b1;,&#x3c9;-amino-alkanoic acid or ester has formula HN&#x2014;(CH)COOR, wherein n=9 to 13 and R is an alkyl group or a hydrogen; the alkanoic ester or acid has formula R&#x2014;COOR, wherein Ris a straight or branched alkyl group with formula CHor CH, wherein m=6 to 20 and Ris an alkyl group or a hydrogen; the molar ratio between the alkanoic acid(s) or ester(s) and the &#x3b1;,&#x3c9;-amino-alkanoic acid(s) or ester(s) is in the range from 0.001 to 0.4%. The present invention also relates to novel methods for obtaining such a composition.

Composition made of amino acid or ester with polymer quality and methods for obtaining same

A process for synthesizing an &#x3c9;-amino acid compound of formulaHOOC&#x2014;(CH)&#x2014;CHNH,wherein 4&#x2264;r&#x2264;13 from a monounsaturated fatty nitrile compound of formulaCH&#x2550;CH&#x2014;(CH)&#x2014;CNthe process comprising: 1) a step of hydroformylation of the mono unsaturated fatty nitrile compound by reacting said nitrile with carbon monoxide and di hydrogen 5e-a5 to obtain a nitrile aldehyde compound of formula HOC&#x2014;(CH2)r+2-CN, then 2) a step of oxidation, in the presence of dioxygen, of the nitrile aldehyde compound to obtain a corresponding nitrile acid compound of formula HOOC&#x2014;(CH2)r+2-CN, and 3) a step of reduction of the nitrile acid compound to give an w-amino acid of formulaHOOC&#x2014;(CH)&#x2014;CHNH.

Amino acid preparation method comprising a step of hydroformylation of an unsaturated fatty nitrile

A method of synthesising an amino acid from an unsaturated fatty compound I that includes at least the following steps: cross-metathesis with a short unsaturated compound II, one of compounds I or II comprising a nitrile function and the other of these compounds II or I an ester function, so as to obtain and recover at least one monounsaturated nitrile ester NEU; hydrolysis of the NEU in unsaturated acid nitrile NAU; hydrogenation of the NAU to saturated amino acid AA; and then purification of the AA, if applicable, in particular by crystallisation. Also, a polymer obtained by polymerisation using the amino acid synthesised according to the method.

Method of synthesising amino acid by metathesis, hydrolysis, then hydrogenation

A method for the combined synthesis of a mono-unsaturated nitrile-ester(acid) and of a bi-functional carbonyl compound, wherein it includes a step including the cross metathesis mc1 of an unsaturated fatty acid/ester compound with an unsaturated nitrile compound, in which mc1 is performed with partial conversion such as to obtain and recover, separately, at least the following products: a mono-unsaturated nitrile-ester/acid and a symmetrical compound, diester or diacid respectively including a double bond located in the middle of the molecular chain of compound, and subsequently a step including the oxidation cleavage cp2 of the double bond of compound, such as to form a single type of carbonyl compound having formula R2-(CH2)n-COR', in which R&#x2032; is H or OH, depending on the operating conditions selected for the oxidation cleavage cp2. Also, the production of monomers for the polymer industry.

Combined synthesis of a nitrile-ester/acid and of a diester/diacid

A process for the synthesis of an unsaturated product by cross metathesis between a first unsaturated compound having at least 8 carbon atoms and a second unsaturated compound having less than 8 carbon atoms, the first unsaturated compound being capable of producing an unsaturated coproduct comprising more than 14 carbon atoms, by homometathesis, said process including at least one production phase which includes: feeding a reactor with the first unsaturated compound; feeding the reactor with the second unsaturated compound; feeding the reactor with at least a first metathesis catalysts, then feeding the reactor with at least a second metathesis catalyst; withdrawing a product stream arising from the reactor; the turnover number of the first catalyst being higher than the turnover number of the second catalyst so as to achieve the same target degree of conversion of the first unsaturated compound.

Cross metathesis process

The invention relates to a method for the synthesis of a branched unsaturated fatty compound, said method comprising the metathesis, in the presence of a metathesis catalyst, of a linear unsaturated fatty compound and a branched olefin. The branched unsaturated fatty compound is used in particular for the production of at least one of the following products: dielectric fluids, specialty surfactants, emulsifiers, frictions agents, antistatic additives, antifogging additives, mould release agents, pigment dispersants, high-performance lubricants, waxes and wax emulsifiers, polymer conversion additives, PVC stabilizing agents, inks, resins, paints, varnishes, solvents, lipsticks, creams for the skin, deodorants, particularly stick deodorants, hair dyes, shampoos and other liquid soaps, shaving foam, laundry detergents, cleaning agents, fabric softeners, and mixtures of same.

Synthesis of a branched unsaturated compound by means of cross metathesis

A process for synthesizing a long-chain saturated &#x3b1;,&#x3c9;-amino ester (acid) including from 6 to 17 carbon atoms, said process including a first step of cross metathesis between a first acrylic compound chosen from acrylonitrile, acrylic acid or an acrylic ester and a second monounsaturated compound including at least one nitrile, acid or ester trivalent function, one of these compounds including a nitrile function and the other an acid or ester function, in the presence of a ruthenium carbene metathesis catalyst, and a second step of hydrogenation of the monounsaturated nitrile-ester (acid) obtained, wherein said monounsaturated compound including at least one nitrile, acid or ester trivalent function has previously been subjected to a purification by thermal and/or chemical treatment.

Process for preparing amino acids or esters comprising a metathesis step

The present invention relates to nitrogenous associative molecules comprising at least one unit rendering them capable of associating with one another or with a filler by noncovalent bonds, and comprising a function capable of reacting with a polymer containing unsaturations so as to form a covalent bond with said polymer.

Molecules having combinable groups

A compound includes at least one group Q and at least one group A linked together by at least one 'spacer' group Sp, in which:

Nitrile oxide, nitrone, and nitrile imine compounds

A shock absorber is prepared from a material formed from branched molecules comprising associative groups. The branched molecules each contains at least bifunctional fragments and at least trifunctional fragments joined together by ester or thioester bridges alone or in combination with amide or urea bridges.

Use, as a shock absorber, of a material formed from branched molecules containing associative groups

The invention relates to the field of plasticizers, compounds used as additives in polymers for facilitating the transformation thereof or modifying the mechanical properties thereof especially rigidity.

Use of molecules carrying associative groups as plasticisers

A method for synthesizing &#x3c9;-amino-alkanoic acids or the esters thereof from natural unsaturated fatty acids passing through an intermediate &#x3c9;-unsaturated nitrile compound. The method is simple to implement and, relative to known methods, avoids the environmental constraints and economic disadvantages resulting from the reaction by-products. The method includes synthesizing an &#x3c9;-amino acid (ester) of formula R3OOC&#x2014;(CH2)q-CH2NH2, in which R3 is H or an n-butyl radical and q is an integral index of between 2 and 13, from a monounsaturated fatty acid (ester) of formula (R1-CH&#x2550;CH&#x2014;(CH2)p-COO)xR2, in which x represents 1, 2 or 3, R1 is H or a hydrocarbon radical comprising from 4 to 11 carbon atoms and, where appropriate, a hydroxyl function, R2 is H or an alkyl radical comprising from 2 to 4 carbon atoms, and may contain one or more heteroatoms, and p is an integral index of between 2 and 11, including a reaction step of ammoniation.

Method for synthesizing an omega-amino acid or ester from a monounsaturated fatty acid or ester

The invention relates to the field of plasticizers, compounds used as additives in polymers for facilitating the transformation thereof or modifying the mechanical properties thereof, especially rigidity.

Molecules carrying associative groups and use thereof as plasticisers

A process for the synthesis of C11 and C12 &#x3c9;-amino-alkanoic acid esters including a step of continuous nitrilation in the gas phase or in a mixed gas-liquid phase, a step of metathesis and a step of reduction by hydrogenation, using, as raw material, C10 and C11 &#x3c9;-alkenoic acid esters.

Process for the synthesis of C11 and C12 omega-aminoalkanoic acid esters comprising a nitrilation step

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Lyons, France

Jean-Luc Couturier