Societe Nationale Elf Aquitaine

Elf Atochem S.a.

Atochem

Atofina

Elf Aquitaine Production

Elf Aquitaine

Jean-Louis Seris

Bernard Meunier

Christian Gancet

Nathalie Cuny

Monique Lescure

David Bonnaffe

Alain Bergel

Claude Chambu

Maurice Comtat

Gerard Gil

Jean Le Petit

Jean-Baptiste Verlhac

Guy Levesque

Gilles Labat

Andre Lubineau

Jean-Francedillaois Boe

Alexander Sorokin

Michel Gellato

Jeannine Suberloco

Bruno Cornut

Michel Therisod

Claude Guignard

Jean-Jacques Girerd

Compositions which greatly diminish, or eliminate, unpleasant smells associated with the use of underwear and diapers are described. These compositions are composed of superabsorbent polymers of the p6lyacrylic type and of certain boron derivatives, in particular sodium tetraborate pentahydrate. The sanitary articles which incorporate these compositions do not develop unpleasant smells, ammoniacal or otherwise.

Super absorbent composition intended for the production of sanitary articles of the underwear, diaper or disposable diaper type which do not develop unpleasant smells

Compositions which greatly diminish, or eliminate, unpleasant smells associated with the use of underwear and diapers are described. These compositions are composed of superabsorbent polymers of the polyacrylic type and of certain boron derivatives, in particular sodium tetraborate. The sanitary articles which incorporate these compositions do not develop unpleasant smells, ammoniacal or otherwise.

Superabsorbent composition intended for the production of sanitary

Process for the oxidative decomposition of organic compounds present in

Process for the delignifcation and bleaching of a lignocellulose material

Method for the chemical modification of proteins using a reagent of general formula ##STR1## obtained from the diene ##STR2## and maleic anhydride by Diels-Alder addition.

Method for the chemical modification of proteins

Oxidation catalysts based on supported metalloporphyrin

The subject-matter of the present invention is a process for obtaining irone by enzymatic route. The precursors extracted from fresh iris rhizomes are subjected to the action of a peroxidizing enzymatic composition comprising oxygen and a lipoxidase or hydrogen peroxide and a peroxidase.

Process for obtaining irone by enzymatic route

The invention relates to a process for the electrochemical regeneration of pyridine cofactors. The process of the invention is characterized by carrying out a doubly mediated catalysis by means of a flavin and an oxidoreductase enzyme.

Process for the regeneration of a pyridine cofactor by electrochemical

Enzymes are fixed on carriers with a bis-dithioester capable of combining with the enzyme and with the carrier. The bis-dithioester has at each of its ends a group capable of reacting with an aimine function. The enzyme may be contacted with the bis-dithioester before the enzyme and carrier are combined. The carrier is an inorganic or organic solid.

Fixation of enzymes with bis-dithioesters

The present invention relates to a fractionating and observation cel of a liquid analysis device comprising a rotor, a central distribution cup or container for said liquid, and an assembly of cells on the periphery of the rotor, wherein the cells and the duct are formed by welding of two plastic pieces comprising said rotor, the liquid feed and gas evacuation duct is provided by the space existing between the two plastic pieces welded to each other by two welding seams along the edges of each duct, the opposite faces of the said pieces that constitute the duct with the said seams being left rough from molding.

Cell for analysis device, to collect a fraction of a liquid sample for

In a photochemical process, halogeno-alkanes are produced by irradiation of an ethylenic compound and of an excess amount of bromhydric acid, the reaction being advantageously carried out in the presence of a certain amount of the halogeno-alkane compound to be obtained. The ethylenic compound concentration is of 1 mole to 1.5 mole per liter in the reaction medium; the reaction is continued until a 90% conversion is reached. 3-bromo-1-chloro-propane is obtained with a good yield by irradiation of allyl chloride and HBr. Apparatus is provided for carrying out the process batchwise and in continuous operation.

Photochemical process for the production of halogeno-alkanes

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Jurancon, France

Jean-Louis Seris