Rhone-poulenc Chimie

Rhodia Limited

Other

Rhodia Operations

Paul-Joel Derian

Manilal S Dahanayake

Bruno Langlois

Alain Senechal

Gilles Guerin

Christian Priou

David Josehph Dino

Michel Feder

Michel Peignier

Jean Ulrich

Jean-Marc Ricca

Ruoxin Li

Jiang Yang

Jean-Pierre Marchand

Jean-Pierre Paillet

Philippe Jost

Robert Gabriel

Mark E Ventura

Jean-Michel Mercier

Claudie Willemin

Gladys Saliba Gabriel

Jean-Pierre Hecaen

Fr&eacute;d&eacute;ric Leising

Jeremy LaCrosse

There is a method for enhancing the recovery of oil from a reservoir. The method has the step of a) introducing a flooding fluid into the reservoir and b) extracting the oil through a wellbore at a location different than the point of introduction of the flooding fluid into the reservoir. The flooding fluid has water and an amount of one or more non-polymeric viscoelastic surfactants sufficient to provide an interfacial surface tension of about 1 mNm or less and a viscosity of about 10 cps or more. The one or more surfactants is selected from the group of one or more cationic surfactants, one or more zwitterionic surfactants, one or more amphoteric surfactants, one or more anionic surfactants, and combinations thereof.

Methods for recovering oil from an oil reservoir

Method for recovering oil from an oil reservoir

The present invention provides stable, high solids, aqueous emulsions of high viscosity masked (poly)isocyanates, water, surface active agents, and, optionally, thickening water-soluble polymers. The emulsions of the present invention are formulated in as little as 20 parts by weight water or less. The present invention further provides processes for forming such emulsions.

Process for the preparation of aqueous emulsions of advantageously masked (poly)isocyanate oils and/or gums and/or resins and emulsions obtained

Process for alkoxylation in the presence of rare earth triflimides

Compositions are disclosed comprising a conventional surfactant, a cationic or amphoteric gemini surfactant and a polymeric soil release agent. The conventional surfactant comprises a hydrophilic group and a hydrophobic group. The gemini surfactant comprises two surfactant moieties attached to each other by a spacer moiety. Each surfactant moiety having at least one hydrophilic group and at least one hydrophobic group. Novel trimeric and tetrameric cationic gemini surfactants are also disclosed along with their use in combination with soil release polymer compositions that exhibit superior cleaning efficacies when incorporated in laundry and other cleaning detergent systems. Novel surfactant/soil release polymer compositions are also disclosed employing known cationic gemini surfactants. The polymeric soil release agent can be any conventional polymeric soil release agent, but preferably comprising PET&mdash;POET copolymer. The compositions are useful as surfactant additive packages, detergents and fabric softeners.

Surfactant compositions with enhanced soil release properties containing a cationic gemini surfactant

A cosmetic composition comprising an aqueous emulsion of organopolysiloxanes selected from the group consisting of silicone oils, gums, resins and mixtures therein which is prepared in a single kneading step which is sufficient to produce an emulsion having a particle size of 0.1 to 5 micrometers is provided.

Process for the preparation of aqueous emulsions of silicone oils and/or

Contaminated aqueous systems can be cleaned using an ultra-filtration process that allows for the recovery of high yields of the surfactant employed therein for recycle and reuse. The system employs a specific class of sugar-derived nonionic surfactants which remain polar and solvated at the higher operating temperatures of the system. Specifically, these are sugar-derived nonionic surfactants more definitively known as the alkyl polyglycosides and the alkyl glucomides. The surfactant/contaminant-containing aqueous system is ultra-filtered resulting in the surfactant passing through with the permeate at extremely high yields for recovery and reuse.

Recovery and reuse of sugar-derived nonionic surfactants from aqueous

A method for preparing oil-in-water emulsions of oils, gums or silicone resins by kneading a mixture of (1) a silicone phase (A) with a viscosity of at least 3 Pas or a consistency of at least 200, and (2) an aqueous phase comprising water, at least one surfactant (B) and optionally at least one water-soluble thickening polymer (C), wherein the relative amounts of water, (B) and optionally (C) are such that the aqueous phase preferably has at least as much viscosity or consistency as the silicone phase (A), said kneading being performed for a sufficient time and with sufficient shear to give an oil-in-water emulsion having a particle size of 0.1-5 .mu.m; and optionally by diluting the medium in water.

Process for the preparation of aqueous emulsions of silicon oils and/or

The present invention relates to novel derivatives of terpene origin which consist of cycloalkenyls or cycloalkyls having at least seven carbon atoms and possessing surfactant and/or fragrant properties. According to one embodiment, the invention relates to compounds of the formula ##STR1## in which p and q are integers or decimal numbers and are not equal to zero, O&lt;P&lt;20, preferably, O&lt;P&lt;5, and O&lt;q&lt;100, preferably 1&lt;q&lt;20. The invention further relates to the surfactant and/or fragrant compositions based on the above-mentioned compounds. The invention has particular applicability in detergent and perfume formulations.

Derivatives of terpene origin, surfactant and/or fragrant composition

Storage-stable, pseudoplastic free-flowing cosmetic compositions/formulations, for example shampoos, shower and exfoliating gels and hair lotions, comprise a stable and homogeneous suspension, in water, of water-insoluble particulates, and which further comprise at least one anionic surfactant, at least one nonionic or amphoteric cosurfactant and at least one electrolyte, these surfactants being present in such amounts as to impart pseudoplasticity thereto with a yield point of at least 0.2 Pa and constituting spherulites suspended within a lamellar phase.

Free-flowing pseudoplastic cosmetic compositions/suspensions

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

Stable pyrethroid microemulsion compositions having from 0.1% to 95% by weight/weight of at least one pyrethroid in liquid form; from 2% to 90% by weight/weight of a three-component surfactant system having at least one anionic surfactant, at least one nonionic surfactant and at least one co-surfactant chosen from aliphatic alcohols, cycloaliphatic alcohols, arylaliphatic alcohols, ether-alcohols and aliphatic carboxylic acids; and water. The ratio by weight of anionic surfactant/nonionic surfactant is from 10/90 to 90/10, and the ratio by weight of co-surfactant/anionic and nonionic surfactants is from 0.1 to 1.5. The microemulsion compositions are applied directly or after dilution with water to plants (crops) or wood for controlling insects.

Pyrethroid microemulsion compositions and method for controlling insects

Growing community of inventors

Villennes sur Seine, France

Paul-Joel Derian