Patents by Inventor Alain Senechal

Alain Senechal has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7838588
    Abstract: The invention relates to a dried emulsion. In particular, the invention relates to a dried emulsion containing a liquid hydrophobic phase and a water-soluble or water-dispersible polymeric matrix whose hydrophobic phase content is high. The invention also relates to a method for producing the dried emulsion and to uses of this emulsion. The utilized water-soluble matrix contains block copolymers.
    Type: Grant
    Filed: March 15, 2005
    Date of Patent: November 23, 2010
    Assignee: Rhodia Chimie
    Inventors: Sophie Deroo, Alain Senechal, Jean-Michel Mercier, Nadia Martin
  • Publication number: 20080255289
    Abstract: The invention relates to a dried emulsion. In particular, the invention relates to a dried emulsion containing a liquid hydrophobic phase and a water-soluble or water-dispersible polymeric matrix whose hydrophobic phase content is high. The invention also relates to a method for producing the dried emulsion and to uses of this emulsion. The utilized water-soluble matrix contains block copolymers.
    Type: Application
    Filed: March 15, 2005
    Publication date: October 16, 2008
    Inventors: Sophie Deroo, Alain Senechal, Jean-Michel Mercier, Nadia Martin
  • Publication number: 20070202071
    Abstract: The invention relates to novel emulsions comprising a dendritic polymer. The invention also relates to the use of a dendritic polymer as an emulsification agent. The inventive emulsions are suitable for use in the cosmetics, detergents, paint and coatings industries.
    Type: Application
    Filed: September 29, 2004
    Publication date: August 30, 2007
    Inventors: Mikel Morvan, Alain Senechal, Olivier Anthony, Franck Touraud, Jean-Francois Sassi, Katerina Karagianni, Rene Rossin
  • Patent number: 7078198
    Abstract: The present invention relates to a heteropolysaccharide (HP) characterized in that it can be obtained by fermentation of a medium comprising at least one strain of Pseudomonas sp I-2054 (or DSM 12295), one of the recombinants thereof or the mutants thereof and a source of carbon which can be assimilated by said strain, one of the recombinants thereof or one of the mutants thereof. The invention also relates to a method for the production and use of said heteropolysaccharide as a thickening agent and/or gelling agent.
    Type: Grant
    Filed: April 10, 2000
    Date of Patent: July 18, 2006
    Assignee: Rhodia Chimie
    Inventors: Sophie Vaslin, Alain Senechal, Paule Chevallereau, Jean-Luc Simon, Robert Cantiani
  • Publication number: 20040249062
    Abstract: Aqueous emulsions of oils, gums or preferably masked (poly)isocyanate resins are prepared by kneading a mixture containing (1) a preferably masked (poly)isocyanate phase (A) with a viscosity of at least 3 Pa.s or a consistency of at least 200, and (2) an aqueous phase including water, at least one surfactant (B) and optionally at least one water-soluble thickening polymer (C). The relative amounts of water (B) and optionally (C) being such that the aqueous phase has a viscosity or consistency preferably no lower than that of the preferably masked (poly)isocyanate phase (A). The kneading is performed for a sufficient time and with sufficient shear to give an oil-in-water emulsion with a particle size of 0.1-5 &mgr;m, and optionally diluting the medium with water.
    Type: Application
    Filed: April 15, 2004
    Publication date: December 9, 2004
    Applicant: RHONE-POULENC CHIMIE
    Inventors: Paul-Joel Derian, Bruno Langlois, Alain Senechal
  • Publication number: 20040170657
    Abstract: The invention relates to a dispersion comprising at least one emulsion of an organic phase in an aqueous phase, said aqueous phase comprising a soluble salt content of at least 0.5 mol/l. The invention is characterized in that the aqueous phase contains at least one amphiphilic block copolymer, comprising at least one hydrophilic block, selected from copolymers which: (i) do not display macroscopic separation of phases in solution at 1% weight, in a mixture of water and KBr, the concentration of KBr being identical to that of soluble salt in the dispersion, at 20° C.; (ii) have a hydrophilic block(s)/hydrophobic block(s) mass ratio of between 40/60 and 95/5. The invention also relates to a method of producing said dispersion and phytosanitary formulations.
    Type: Application
    Filed: December 16, 2003
    Publication date: September 2, 2004
    Inventors: Mikel Morvan, Alain Senechal
  • Patent number: 6509176
    Abstract: The invention concerns a heteropolysaccharide (HP) characterised in that it is obtainable by fermenting in a medium comprising at least an Agrobacterium radiobacter I-2001 (or DSM 12095) strain, one of its recombinants, or one of its mutants, and a carbon source capable of being assimilated by said strain, one of its recombinants or one of its mutants. The invention also concerns a method for preparing said heteropolysaccharide and its use as thickening and/or gelling agent.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: January 21, 2003
    Assignee: Rhodia Chimie
    Inventors: Robert Cantiani, Alain Senechal, Sophie Vaslin, Paule Chevallereau, Jean-Luc Simon
  • Patent number: 6506832
    Abstract: 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.
    Type: Grant
    Filed: March 4, 1996
    Date of Patent: January 14, 2003
    Assignee: Rhone-Poulenc Chimie
    Inventors: Paul-Joel Derian, Bruno Langlois, Alain Senechal
  • Publication number: 20020193508
    Abstract: A method for preparing aqueous emulsions of oils, gums or preferably masked (poly)isocyanate resins by kneading a mixture consisting of (1) a preferably masked (poly)isocyanate phase (A) with a viscosity of at least 3 Pa.s or a consistency of at least 200, and (2) an aqueous phase consisting of water, at least one surfactant (B) and optionally at least one water-soluble thickening polymer (C), the relative amounts water, (B) and optionally (C) being such that said aqueous phase has a viscosity or consistency preferably no lower than that of the preferably masked (poly)isocyante phase (A), and said kneading being performed for a sufficient time and with sufficient shear to give an oil-in-water emulsion with a particle size of 0.1-5 &mgr;m, and optionally by diluting the medium with water.
    Type: Application
    Filed: August 15, 2002
    Publication date: December 19, 2002
    Inventors: Paul-Joel Derian, Bruno Langlois, Alain Senechal
  • Patent number: 6348436
    Abstract: The present invention relates to a drilling fluid comprising cellulose nanofibrils comprising at least 80% of cells with primary walls and charged with carboxylic acids and with acidic polysaccharides, alone or as a mixture. This additive, alone, gives the drilling fluid shear-thinning properties and is stable up to temperatures of about 180° C.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: February 19, 2002
    Assignee: Rhodia Chimie
    Inventors: Bruno Langlois, Joël Benchimol, Gilles Guerin, Isabelle Vincent, Alain Senechal, Robert Cantiani
  • Patent number: 6306207
    Abstract: The present invention relates to compositions comprising essentially amorphous cellulose nanofibrils, at least one additive chosen from carboxycellulose with a degree of substitution of more than 0.95, a natural polysaccharide, a polyol, and optionally at least one co-additive, the content of additive and of optional co-additive being less than or equal to 30% by weight relative to the weight of nanofibrils and of additive and of optional co-additive. Similarly, a subject of the invention is a process for preparing such compositions, which consists in adding the additive and the optional co-additive to a suspension of essentially amorphous nanofibrils, and then in drying the suspension thus supplemented. The compositions obtained are readily redispersable and conserve their initial rheological properties.
    Type: Grant
    Filed: February 14, 2001
    Date of Patent: October 23, 2001
    Assignee: Rhodia Chimie
    Inventors: Robert Cantiani, Gilles Guerin, Alain Senechal, Isabelle Vincent, Joël Benchimol
  • Publication number: 20010011516
    Abstract: The invention concerns compositions containing essentially amorphous cellulose nanofibrils, carboxyl cellulose with a degree of substitution not more than o.95 as additive, and optionally at least one co-additive, the content in additive and optional co-additive being less than 30 wt. % relative to the weight of nanofibrils and additive and optional co-additive. The invention also concerns a method for preparing such compositions, consistin in adding to a substantially amorphous nanofibril suspension, the additive and optionally the co-additive(s), then in drying the suspension thus additivated. The resulting compositions are easily redispersable and preserve all their rheological properties.
    Type: Application
    Filed: February 14, 2001
    Publication date: August 9, 2001
    Inventors: Robert Cantiani, Gilles Guerin, Alain Senechal, Isabelle Vincent, Joel Benchimol
  • Publication number: 20010004869
    Abstract: The present invention relates to compositions comprising essentially amorphous cellulose nanofibrils, at least one additive chosen from carboxycellulose with a degree of substitution of more than 0.95, a natural polysaccharide, a polyol, and optionally at least one co-additive, the content of additive and of optional co-additive being less than or equal to 30% by weight relative to the weight of nanofibrils and of additive and of optional co-additive. Similarly, a subject of the invention is a process for preparing such compositions, which consists in adding the additive and the optional co-additive to a suspension of essentially amorphous nanofibrils, and then in drying the suspension thus supplemented. The compositions obtained are readily redispersable and conserve their initial Theological properties.
    Type: Application
    Filed: February 14, 2001
    Publication date: June 28, 2001
    Inventors: Robert Cantiani, Gilles Guerin, Alain Senechal, Isabelle Vincent, Joel Benchimol
  • Patent number: 6231657
    Abstract: The invention concerns compositions containing essentially amorphous cellulose nanofibrils, carboxyl cellulose with a degree of substitution not more than o.95 as additive, and optionally at least one co-additive, the content in additive and optional co-additive being less than 30 wt. % relative to the weight of nanofibrils and additive and optional co-additive. The invention also concerns a method for preparing such compositions, consisting in adding to a substantially amorphous nanofibril suspension, the additive and optionally the co-additive(s), then in drying the suspension thus additivated. The resulting compositions are easily redispersable and preserve all their rheological properties.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: May 15, 2001
    Assignee: Rhodia Chimie
    Inventors: Robert Cantiani, Gilles Guerin, Alain Senechal, Isabelle Vincent, Joël Benchimol
  • Patent number: 6224663
    Abstract: The present invention relates to compositions comprising essentially amorphous cellulose nanofibrils, at least one additive chosen from carboxycellulose with a degree of substitution of more than 0.95, a natural polysaccharide, a polyol, and optionally at least one co-additive, the content of additive and of optional co-additive being less than or equal to 30% by weight relative to the weight of nanofibrils and of additive and of optional co-additive. Similarly, a subject of the invention is a process for preparing such compositions, which consists in adding the additive and the optional co-additive to a suspension of essentially amorphous nanofibrils, and then in drying the suspension thus supplemented. The compositions obtained are redily redispersable and conserve their initial rheological properties.
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: May 1, 2001
    Assignee: Rhodia Chimie
    Inventors: Robert Cantiani, Gilles Guerin, Alain Senechal, Isabelle Vincent, Joël Benchimol
  • Patent number: 6037407
    Abstract: 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.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: March 14, 2000
    Assignee: Rhone Poulenc Chimie
    Inventors: Paul-Joel Derian, Michel Feder, Jean-Pierre Paillet, Michel Peignier, Alain Senechal, Jean Ulrich
  • Patent number: 5831042
    Abstract: Chemically modified succinoglycan polysaccharides, e.g., acidic or enzymatic hydrolysates, have a reduced content of pyruvic acid and succinic acid structural units relative to the unmodified such succinoglycans, and are well suited, whether in fibrous, powdery or gel state, for use, e.g., as thickening stabilizing or suspending agents, in foodstuff, cosmetic and a variety of other compositions.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 3, 1998
    Assignee: Rhone-Poulenc Chimie
    Inventors: Magali Knipper, Michele Raffart, Alain Senechal
  • Patent number: 5763505
    Abstract: 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.
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: June 9, 1998
    Assignee: Rhone Poulenc Chimie
    Inventors: Paul-Joel Derian, Michel Feder, Jean-Pierre Paillet, Michel Peignier, Alain Senechal, Jean Ulrich
  • Patent number: 5514792
    Abstract: Chemically modified succinoglycan polysaccharides, e.g., acidic or enzymatic hydrolysates, have a reduced content of pyruvic acid and succinic acid structural units relative to the unmodified such succinoglycans, and are well suited, whether in fibrous, powdery or gel state, for use, e.g., as thickening stabilizing or suspending agents, in foodstuff, cosmetic and a variety of other compositions.
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: May 7, 1996
    Assignee: Rhone-Poulenc Chimie
    Inventors: Magali Knipper, Michele Raffart, Alain Senechal
  • Patent number: 4894335
    Abstract: Stable oil-in-water emulsions are prepared containing a relatively high concentration of from 8 to 60% by weight of a heteropolysaccharide bipolymer, e.g., xanthan gum preferably, the emulsions contain greater than 15 up to 60% biopolymer, 40 to 99 parts of an aqueous phase containing 10 to 60% by weight biopolymer and 40% to 90% by weight water, 1 to 60 parts oil and 1 to 40% with respect to the aqueous phase and oil of a surface active agent. The emulsions are prepared by combining powdered biopolymer with water, oil and surfactant or by concentrating an oil-in-water emulsion containing the biopolymer such as by ultrafiltration. A fermentation wort containing the biopolymer may be used in preparing the emulsion.
    Type: Grant
    Filed: March 16, 1987
    Date of Patent: January 16, 1990
    Assignee: Rhone-Poulenc Specialites Chimiques
    Inventors: Michel Peignier, Michel Garcia, Alain Senechal, Pierre Gagne, Dominique Lespinasse, Jean-Bernard Chaux