Rhone-poulenc Chimie

Rhodia Chimie

Other

Hexion Specialty Chemicals, Inc.

Rhone-bouling Chimie

Philippe Jost

Philippe Olier

Christian Priou

G&eacute;rard Mignani

Philippe Karrer

Michel Peignier

Michel M Gay

Gerard Mignani

Michel Feder

Gilles Guerin

Daniel Joubert

Samir Z Zard

Florence Tournilhac

Paul-Joel Derian

Béatrice Sire

Gary Baker

Marc Malassis

Jean-Christophe Castaing

Marie-C&eacute;cile Duchamp

Michel Letoffe

The invention concerns a method for enhancing water-repellency repellency treatment of mineral hydraulic binder compositions and compositions obtainable by said method and their uses in the building sector, said method comprising the step of adding a sufficient amount of at least one monovalent cation salt of a carboxylic acid to said composition.

Method for enhancing water-repellency treatment of mineral hydraulic binder compositions and compositions obtainable by said method and their uses

The present invention relates to a method for partial or total oxidation of one or several thiocarbonylthio ends of a polymer, obtained by radical polymerisation controlled by reversible addition-cleavage with thiocarbonylthio agents, Said method comprising the step of contacting said polymer with an ozone-containing gas, during which ozone reacts with the one or several thiocarbonylthio ends.

Method for partial or total oxidation of one or several thiocarbonylthio ends of a polymer obtained by radical polymerisation controlled by reversible addition-fragmentation

The invention concerns a silicon dispersion hardenable by cross-linking and useable particularly as putty, paint or film coating. The dispersion according to the instant invention contains hydroxylated condensable constituents and is free from hydrolyzable substituents capable of being transformed into volatile organic compounds, is free from volatile organic compounds and polyvinil alcohol, and contains an &agr;,&ohgr;-diOH polyorganosiloxane (A), an adherence promoter (B) with NH functions and OH functions, and, optionally, a catalyst (C), a surfactant (D), a cross-linking agent (E), fillers (F), a dispersing agent (G), a plasticizer (H), an antifungal agent (I), an antifoaming agent (J), a stabilizer (K) or a base (L). The invention is useful for putty or film coatings prepared with this dispersion.

Aqueous silicone dispersion

The invention concerns a method for preparing polyorganosiloxanes with high purity ester function (acetoxyalkyl or acetoxyalkenyl), consisting in: hydrosilylation between a hydrogenopolyorganosiloxane oil and &agr;-olefin alcohol; esterification of the resulting hydroxy-alkylated or polyorganosiloxane with an acetyl halide; elimination of &agr;-olefin derivatives and the halohydric acid formed. The resulting polyorganosiloxanes with ester function (acetoxyalkyl) have global siloxane, &agr;-olefin unit and/or &agr;-olefin impurities contents corresponding to a number of &agr;-olefin groups for 100 g of polyorganosiloxane, with ester function less than 10 mol.

Method for preparing silicon with high purity ester function

The present invention relates to multifunctionalized polyorganosiloxanes comprising, per molecule at least one functional siloxy unit Y having C alkoxy radical and at least one other functional siloxy unit W having an halogenated or polyhalogenated alkyl, aralkyl or aryl; polyether ether; epoxidized alkyl; alkoxyalkyl; hydroxylated, carbonylated or esterified alkyl; phenol; and alkoxysilyl; and optionally at least one siloxy unit having a SiH group. The alkoxy functionality Y is introduced onto a suitable polyhydroorganosiloxane by a dehydrogenation/condensation reaction from the alcohol from which Y derives and then the non-hydrogen functionality W by a hydrosilylation reaction from the olefinic compound from which W derives. The multifunctionalized polyorganosiloxanes can be used as antiadhesion modulators in silicone compositions.

Functionalized polyorganosiloxanes and one of the processes for the preparation thereof

The present invention relates to multifunctionalized alkoxy, the alkoxy functionality Y being introduced onto a suitable polyhydroorganosiloxane by a dehydrogenation/condensation reaction from the alcohol from which Y derives and then the functionality W by a hydrosilylation reaction from the olefinic compound form which W derives. The multifunctionalized alkoxy polyorganosiloxanes can be used as antiadhesion modulators in silicone compositions and as silica covering agents in silicone compositions containing fillers.

Polyfunctional perhalogenated polyorganosiloxanes and the processes for their preparation

Chemicaly stable, perflourinated, linear or cyclic polyorganosiloxanes (POS), and a process for the preparation thereof. Antifoams, agents for lowering surface tension, dirt repellents, antiadhesives, lubricants, oleophobic and/or hydrophobic agents, coatings and other compositions containing the perfluorinated POS are disclosed.

Polyfunctional, perhalogenated polyorganosiloxanes and methods for preparation thereof

The present invention relates to multifunctionalized alkoxy, the alkoxy functionality Y being introduced onto a suitable polyhydrooorganosiloxane by a dehydrogenation/condensation reaction from the alcohol from which Y derives and then the functionality W by a hydrosilylation reaction from the olefinic compound from which W derives. The multifunctionalized alkoxy polyorganosiloxanes can be used as antiadhesion modulators in silicone compositions and as silica covering agents in silicone compositions containing fillers.

Functionalized polyorganosiloxanes and one of the processes for the

Chemically stable, perfluorinated, linear or cyclic polyorganosiloxanes (POS), and a process for the preparation thereof. Antifoams, agents for lowering surface tension, dirt repellents, antiadhesives, lubricants, oleophobic and/or hydrophobic agents, coatings and other compositions containing the perfluorinated POS are disclosed.

Perhalogenated polyorganosiloxanes and the processes for their

Stable and flowable aqueous dispersions of at least one water-insoluble material are formulated by dispersing such water-insoluble material, e.g., solid particulates of a plant protection compound, into a homogeneous, stable and flowable aqueous composition that includes (1) at least one water-soluble derivative of a plant protection active agent bearing at least one ionizable functional group and at least one hydrophilic functional group, (2) at least one nonionic surface-active agent and/or at least one aliphatic, cycloaliphatic or arylaliphatic alcohol having from 4 to 15 carbon atoms, and (3) water, this composition exhibiting optical birefringence and a yield point of at least 0.1 pascal.

Homogeneous, stable and flowable aqueous mixtures and dispersions of

A detergent composition containing, as a 'builder', a graft polysaccharide which consists essentially of a polydextrose having an average-weight molecular mass of less than 10,000 and onto which a water-soluble ethylenically unsaturated monomer is grafted.

Detergent composition containing a biodegradable graft polysaccharide

Stable suspensions of zeolite particulates, in water, well adapted for detergency applications, have a pumpable low viscosity and include an effective viscosity reducing amount of a silicone resin and, advantageously, a suspension stabilizer, e.g., an alkaline earth metal cation or a biogum polysaccharide.

Stable pumpable zeolite/silicone suspensions

A sodium tripolyphosphate employed for the formulation of detergent compositions with a water content ranging from 0.8 to 6% in the form of hexahydrate crystals and containing 0.2 to 2% by weight of siliconate. Also, a process for the preparation of such a sodium tripolyphosphate comprising spraying an aqueous solution containing between 5 and 10% of siliconate at weight onto a sodium tripolyphosphate containing at least 50% of phase 1 and having a particle diameter distribution ranging from 600 to 2,500 microns; and grinding the hydrated tripolyphosphate containing the siliconate to a mean particle diameter ranging from 80 to 200 microns.

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Taluyers, France

Philippe Jost