Patents Assigned to Luzenac Europe SAS
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Patent number: 8466095Abstract: The invention relates to a composite material including a metal matrix in which synthetic lamellar phyllosilicated mineral particles are distributed, characterized in that the lamellar phyllosilicated mineral particles are particles also called synthetic phyllosilicated nanoparticles (6) that are mineral, silico/germano-metal, lamellar, synthetic and hydrophilic, and have an average size of between 10 nm and 1 nm. The invention also relates to a substrate that comprises a lubricating coating consisting of such a material, and to an electrolytic deposition preparation method.Type: GrantFiled: December 18, 2008Date of Patent: June 18, 2013Assignees: Centre National de la Recherche Scientifique (C.N.R.S.), Luzenac Europe SAS, Universite Paul Sabatier Toulouse IIIInventors: François Martin, Jean-Pierre Bonino, Pierre Micoud, Jocelyne Ferret, Cédric Lebre, Vincent Baylac
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Patent number: 8202501Abstract: The invention relates to a method for preparing a synthetic talc composition. According to said method, a kerolite composition is subjected to an anhydrous thermal treatment carried out at a pressure lower than 5 bar, from over a few hours up to over a few days, at a treatment temperature higher than 300° C. The invention also relates to a synthetic talc composition prepared in this way, the synthetic talc particles of the composition being exclusively of chemical formula —(Si4)Mg3O10(OH)2— and identifiable, during X-ray diffraction, by the presence of a characteristic diffraction peak located at a distance of between 9.40-9.68 and corresponding to a plane (001). Said synthetic talc particles also have a thermally stable crystalline structure of stacked laminae, which is very similar to that of a natural talc and has a particle size smaller than approximately ten micrometers.Type: GrantFiled: July 13, 2007Date of Patent: June 19, 2012Assignees: Luzenac Europe SAS, Centre National de la Recherche Scientifique (C.N.R.S.)Inventors: Francois Martin, Jocelyne Ferret, Cedric Lebre, Sabine Petit, Olivier Grauby, Jean-Pierre Bonino, Didier Arseguel, Alain Decarreau, Eric Ferrage
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Publication number: 20110015102Abstract: A composite material includes a metal matrix in which synthetic lamellar phyllosilicated mineral particles are distributed. The lamellar phyllosilicated mineral particles are particles also called synthetic phyllosilicated nanoparticles (6) that are mineral, silico/germano-metal, lamellar, synthetic and hydrophilic, and have an average size of between 10 nm and 1 ?m. A substrate that includes a lubricating coating consisting of such a material, and an electrolytic deposition preparation method are also described.Type: ApplicationFiled: December 18, 2008Publication date: January 20, 2011Applicants: LUZENAC EUROPE SAS, UNIVERSITE PAUL SABATIER TOULOUSE IIIInventors: Francois Martin, Jean-Pierre Bonino, Pierre Micoud, Jocelyne Ferret, Cedric Lebre, Vincent Baylac
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Patent number: 7794625Abstract: A method for preparing a composition including mineral particles, that is swelling TOT-TOT interlayer particles, formed by interlayering between: at least one non-swelling mineral phase formed by a stack of elementary laminae of the phyllogermanosilicate 2/1 type and of formula —(SixGe1?x) 4M3O10(OH)2—, and at least one swelling mineral phase formed by a stack of elementary laminae of the phyllogermanosilicate 2/1 type and at least one interlaminar space between two consecutive elementary laminae, the swelling mineral phase being of formula —(SixGe1?x)4M3??O10(OH)2, (M2+)??.nH2O. The composition is prepared by subjecting a gel containing silicon, germanium and metal, of chemical formula —(SixGe1?x)4M3O11,nH2O—, in the liquid state to a hydrothermal treatment which is carried out over a defined period of time and at a temperature of between 150° C. and 300° C.Type: GrantFiled: July 13, 2007Date of Patent: September 14, 2010Assignees: Luzenac Europe SAS, Centre National de la Recherche Scientifique (C.N.R.S)Inventors: Francois Martin, Jocelyne Ferret, Cederic Lebre, Sabine Petit, Olivier Grauby, Jean-Pierre Bonino, Didier Arseguel, Alain Decarreau, Eric Ferrage
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Publication number: 20090261294Abstract: The invention relates to a method for preparing a composition, that is a talcose composition, comprising synthetic mineral particles which contain silicon, germanium and metal, have a crystalline and lamellar structure, and are of formula (SixGe1?x)4 M3O10(OH)2, wherein M is at least one divalent metal and is of formula Mgy(1)COy(2)Zny(3)Cuy(4)Mny(5)Fey(6)Niy(7)Cry(8), and x is a real number of the interval [0; 1]. According to said method, a gel containing silicon, germanium and metal, of formula —(SixGe1?x)4M3O11, n?H2O—, in the liquid state, is subjected to a hydrothermal treatment over a defined period of time and at a temperature of between 300° C. and 600° C., said time and temperature being selected according to the desired particle size and structural stability for the mineral particles containing silicon, germanium and metal, to be prepared.Type: ApplicationFiled: July 13, 2007Publication date: October 22, 2009Applicant: LUZENAC EUROPE SASInventors: Francois Martin, Jocelyne Ferret, Cedric Lebre, Sabine Petit, Olivier Grauby, Jean-Pierre Bonino, Didier Arseguel, Alain Decarreau, Eric Ferrage
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Publication number: 20090253569Abstract: The invention relates to a method for preparing a composition comprising mineral particles, that is swelling TOT-TOT interlayer particles, formed by interlayering between: at least one non-swelling mineral phase formed by a stack of elementary laminae of the phyllogermanosilicate 2/1 type and of formula —(SixGe1-x)4M3O10(OH)2—, and at least one swelling mineral phase formed by a stack of elementary laminae of the phyllogermanosilicate 2/1 type and at least one interlaminar space between two consecutive elementary laminae, said swelling mineral phase being of formula —(SixGe1-x)4M3-?O10(OH)2, (M2+)??.nH2O. In order to prepare said composition, a gel containing silicon, germanium and metal, of chemical formula —(SixGe1-x)4M3O11,nH2O—, in the liquid state, is subjected to a hydrothermal treatment which is carried out over a defined period of time and at a temperature of between 150° C. and 300° C.Type: ApplicationFiled: July 13, 2007Publication date: October 8, 2009Applicant: LUZENAC EUROPE SASInventors: Francois Martin, Jocelyne Ferret, Cedric Lebre, Sabine Petit, Olivier Grauby, Jean-Pierre Bonino, Didier Arseguel, Alain Decarreau, Eric Ferrage
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Publication number: 20090252963Abstract: The invention relates to a method for preparing a synthetic talc composition. According to said method, a kerolite composition is subjected to an anhydrous thermal treatment carried out at a pressure lower than 5 bar, from over a few hours up to over a few days, at a treatment temperature higher than 300° C. The invention also relates to a synthetic talc composition prepared in this way, the synthetic talc particles of the composition being exclusively of chemical formula —(Si4)Mg3O10(OH)2— and identifiable, during X-ray diffraction, by the presence of a characteristic diffraction peak located at a distance of between 9.40-9.68 and corresponding to a plane (001). Said synthetic talc particles also have a thermally stable crystalline structure of stacked laminae, which is very similar to that of a natural talc and has a particle size smaller than approximately ten micrometers.Type: ApplicationFiled: July 13, 2008Publication date: October 8, 2009Applicant: LUZENAC EUROPE SASInventors: Francois Martin, Jocelyne Ferret, Cedric Lebre, Sabine Petit, Olivier Grauby, Jean-Pierre Bonino, Didier Arseguel, Alain Decarreau, Eric Ferrage