Patents by Inventor Jean-Pierre Pascault
Jean-Pierre Pascault 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).
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Patent number: 7767757Abstract: The present invention relates to a thermoset material with improved impact resistance comprising, by weight: •99 to 20% of a thermoset resin, •1 to 80% of an impact modifier comprising at least one copolymer chosen from copolymers comprising A-B-C and A-B blocks, in which: each block is connected to the other by means of a covalent bond or of an intermediate molecule connected to one of the blocks via a covalent bond and to the other block via another covalent bond, A is a copolymer of methyl methacrylate and of at least one water-soluble monomer, C is either (i) a PMMA (homopolymer or copolymer) this PMMA comprising optionally a water-soluble monomer or (ii) a polymer based on vinyl monomers or mixture of vinyl monomers, B is incompatible or partially compatible with the thermoset resin and incompatible with the A block and the optional C block and its glass transition temperature Tg is less than the operating temperature of the thermoset material.Type: GrantFiled: January 18, 2006Date of Patent: August 3, 2010Assignee: Arkema FranceInventors: Olivier Guerret, Pierre Gerard, Jean-Pierre Pascault, Anthony Bonnet
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Publication number: 20090275701Abstract: Curable composition comprising: (a) one or more particular polyisocyanates or a polyurethane prepolymer obtained by the polycondensation of a polyisocyanate in excess, chosen from said polyisocyanates, with one or more polyols comprising at least two free alcohol functional groups, chosen from polypropoxylated or polyethoxylated bisphenol A compounds and polyfunctional polycaprolactone-alcohols; (b) one or more polyols comprising at least two free alcohol functional groups, chosen from polypropoxylated or polyethoxylated bisphenol A compounds and polyfunctional polycaprolactone-alcohols, and polyurethane prepolymers obtained by the polycondensation of one or more polyols in excess, chosen from the above polyols, with one or more particular polyisocyanates, the ratio of the number of isocyanate functional groups of the polyisocyanate component (a) to the number of alcohol functional groups of the polyol component (b) being between 1.00 and 1.Type: ApplicationFiled: July 13, 2009Publication date: November 5, 2009Applicant: Essilor International (compagnie Generale D'optiqu)Inventors: Boris Jaffrennou, Noémie Lesartre, Francoise Mechin, Jean-Pierre Pascault
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Publication number: 20090143545Abstract: The invention relates to a polymerisable liquid mixture comprising: (a) a polymerisable thermosetting composition which is a precursor by polymerisation of a first thermoset polymer material, said composition containing at least one polythiol and/or one polyol, preferably a polythiol, and at least one polyiso(thio)cyanate; and (b) a second polymer material solubilised in the aforementioned polymerisable thermosetting composition, whereby the second material (i) contains at least one block copolymer comprising at least two polymer blocks A and B, namely an elastomer block A and a hydrophilic block B, and, following polymerisation of the polymerisable mixture, (ii) forms domains which are rich in elastomer block A and which are dispersed throughout the first material, said domains being smaller than 80 nanometers and preferably smaller than 50 nanometers.Type: ApplicationFiled: March 29, 2006Publication date: June 4, 2009Applicant: Essilor International (Compagnie Generale d'Optique)Inventors: Olivier Guerret, Boris Jaffrennou, Noemie Lesartre, Francoise Mechin, Jean-Pierre Pascault
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Publication number: 20080262159Abstract: A method of fabricating a power and/or telecommunications cable includes obtaining at least one layer of a material by thermally activating an elastomer composition containing a copolymer of ethylene vinyl acetate, a cyclic polyester oligomer, and a transesterification catalyst, where the material including nodules of polyester.Type: ApplicationFiled: April 3, 2008Publication date: October 23, 2008Inventors: Jerome Fournier, Arnaud Piechaczyk, Olivier Pinto, Jean-Pierre Pascault, Francoise Fenouillot, Laurent Tribut
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Publication number: 20080230931Abstract: The object of the invention is a process for molding an optical element such as a lens (2). According to the invention, the element is obtained by a reaction injection molding process comprising the steps of mixing at least two polymerizing reactants and forcing the obtained reacting mixture by an injection duct (5) for filling under pressure a scaled mold cavity (4) having an entry side (43) provided with a casting opening (42) and an evacuation side (44) and providing a laminated flow of mixture in a spout (6) having a progressive enlarging transversal section between the outlet opening (52) of the injection duct (5) and the casting opening (42) of the mold cavity (4), for avoiding any turbulent area in said laminated flow, said evacuation side (44) being provided with means (45) for evacuating air contained in the mixture during mold filling. The invention also covers the molding installation adapted for using such a process.Type: ApplicationFiled: February 25, 2005Publication date: September 25, 2008Applicant: INSTITUT NATIONAL DES SCIENCES APPLIQUEES (INSA)Inventors: Noemie Lesartre, Jerome Dupuy, Abderrahim Maazouz, Jean-Pierre Pascault
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Publication number: 20080207813Abstract: The present invention provides a power and/or telecommunications cable including at least one layer of a material obtained from a composition comprising: a thermoplastic polymer matrix; and a phenolic resin; wherein said phenolic resin is selected from novolac phenol-formaldehyde resins and novolac cyanate ester resins, and wherein said material includes nodules of hardened phenolic resin dispersed throughout the material.Type: ApplicationFiled: February 4, 2008Publication date: August 28, 2008Inventors: Jerome Fournier, Arnaud Piechaczyk, Olivier Pinto, Jean-Pierre Pascault, Francoise Fenouillot, Laurent Tribut
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Publication number: 20080090989Abstract: A two-part polyisocyanate/polyol composition, curable upon mixing of the two parts for molding casted products, which comprises: —a first polyisocyanate part A, liquid at mixing temperature, comprising at least one polyisocyanate compound A1 bearing at least three (3) isocyanate groups and having at least one isocyanurate cycle in its molecule and at least one diisocyanate compound A2; and—a second polyol part B comprising at least one diol compound B1.Type: ApplicationFiled: November 9, 2005Publication date: April 17, 2008Applicant: INSA (INSTITUT NATIONAL DES SCIENCES APPLIQUEESInventors: Noemie Lesartre, Francoise Mechin, Jean-Pierre Pascault
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Publication number: 20080051511Abstract: The present invention relates to a thermoset material with improved impact resistance comprising, by weight: •99 to 20% of a thermoset resin, •1 to 80% of an impact modifier comprising at least one copolymer chosen from copolymers comprising A-B-C and A-B blocks, in which: each block is connected to the other by means of a covalent bond or of an intermediate molecule connected to one of the blocks via a covalent bond and to the other block via another covalent bond, A is a copolymer of methyl methacrylate and of at least one water-soluble monomer, C is either (i) a PMMA (homopolymer or copolymer) this PMMA comprising optionally a water-soluble monomer or (ii) a polymer based on vinyl monomers or mixture of vinyl monomers, B is incompatible or partially compatible with the thermoset resin and incompatible with the A block and the optional C block and its glass transition temperature Tg is less than the operating temperature of the thermoset material.Type: ApplicationFiled: January 18, 2006Publication date: February 28, 2008Applicant: Arkema FranceInventors: Olivier Guerret, Pierre Gerard, Jean-Pierre Pascault, Anthony Bonnet
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Publication number: 20070213462Abstract: Curable composition comprising: (a) one or more particular polyisocyanates or a polyurethane prepolymer obtained by the polycondensation of a polyisocyanate in excess, chosen from said polyisocyanates, with one or more polyols comprising at least two free alcohol functional groups, chosen from polypropoxylated or polyethoxylated bisphenol A compounds and polyfunctional polycaprolactone-alcohols; (b) one or more polyols comprising at least two free alcohol functional groups, chosen from polypropoxylated or polyethoxylated bisphenol. A compounds and polyfunctional polycaprolactone-alcohols, and polyurethane prepolymers obtained by the polycondensation of one or more polyols in excess, chosen from the above polyols, with one or more particular polyisocyanates, the ratio of the number of isocyanate functional groups of the polyisocyanate component (a) to the number of alcohol functional groups of the polyol component (b) being between 1.00 and 1.Type: ApplicationFiled: January 16, 2007Publication date: September 13, 2007Applicant: Essilor International(Compagnie General D Optique)Inventors: Boris Jaffrennou, Noemie Lesartre, Francoise Mechin, Jean-Pierre Pascault
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Publication number: 20070191544Abstract: Curable composition comprising (a) a prepolymer of the polyurethane type and (b) an aromatic diamine, especially of formula (I), in an amount such that the ratio of the number of amine functional groups of the diamine of formula (I) to the number of isocyanate functional groups of the prepolymer (a) is between 0.92 and 0.98, and at least 5% by weight, relative to the total weight of (a), (b) and (c), of a polystyrene-block-polybutadiene-block-poly)methyl methacrylate) block copolymer; method of preparing such a composition and transparent optical material obtained by heat treatment of said composition.Type: ApplicationFiled: January 16, 2007Publication date: August 16, 2007Applicant: Essilor International (Compagnie Generale D Optique)Inventors: Boris Jaffrennou, Noemie Lesartre, Francoise Mechin, Jean-Pierre Pascault
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Thermosetting elastomer composition based on modified polycyanurate with improved thermal resistance
Patent number: 6911500Abstract: The invention concerns a thermosetting elastomer composition based on modified polycyanurate with improved thermal resistance obtainable by a polymerization method in the presence of a catalyst (D) of a mixture comprising at least: (A) a cyanate, (B) a block copolymer consisting of: a) at least a central block (B1) non-miscible with the cyanate and sufficiently long to provide the composition with elastomeric character; and b) at least two terminal blocks (B2) located on each side of the central block and comprising groups reactive with the cyanate, each of the blocks (B2) being sufficiently long to be miscible with the cyanate; and (C) a mineral filler reactive with the cyanate, in proportions such that the ratio r is not less than 5, but remains less than a threshold value to avoid phase inversion, said method comprising steps which consist in: I) mixing (A), (B), (C) and (D) until a homogeneous mixture is obtained at a temperature higher than the melting point of (A) and of (B) but lower than about 130° C.Type: GrantFiled: July 27, 2001Date of Patent: June 28, 2005Assignee: MerylitheInventors: Francoise Mechin, Jean-Pierre Pascault, Stéphanie Lambour, Jacques Ferrand -
Patent number: 6894113Abstract: The present invention relates to a thermoset material with improved impact resistance comprising: 99 to 20% of a thermoset resin, and 1 to 80% of an impact modifier comprising at least one copolymer comprising S-B-M, B-M and M-B-M blocks, wherein: each block is connected to the other by means of a covalent bond or of an intermediate molecule connected to one of the blocks via a covalent bond and to the other block via another covalent bond, M is a PMMA homopolymer or a copolymer comprising at least 50% by weight of methyl methacrylate, B is incompatible with the thermoset resin and with the M block and its glass transition temperature Tg is less than the operating temperature of the thermoset material, and S is incompatible with the thermoset resin, the B block and the M block and its Tg or its melting temperature is greater than the Tg of B. S is advantageously polystyrene and B polybutadiene.Type: GrantFiled: May 17, 2001Date of Patent: May 17, 2005Assignee: AtofinaInventors: Francois Court, Ludwik Leibler, Jean-Pierre Pascault, Sophie Ritzenthaler
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Patent number: 6878776Abstract: The invention relates to thermosetting compositions, in particular coating or molding compositions, comprising crosslinked polymer microparticles with a size ranging from 10 to 300 nm and carrying at least one reactive functional group which can react with at least one of the reactive components of the thermosetting composition. Preferably, these microparticles carry at least one second reactive functional group distinct from the first which can react with at least one other functional group of the same type carried by another microparticle and/or by a reactive component of the thermosetting composition. These microparticles are at least partially soluble, miscible and/or dispersible in the starting thermosetting composition. The preferred thermosetting compositions are based on resins of epoxy/amine type or on unsaturated polyester resins and/or on vinyl ester resins.Type: GrantFiled: March 24, 2000Date of Patent: April 12, 2005Assignee: Cray Valley, S.A.Inventors: Jean-Pierre Pascault, Ludovic Valette, Philippe Barbeau, Benoit Magny
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Patent number: 6861491Abstract: A method for producing thermosetting polyurethane after transformation from thermoplastic polyurethane with a hydrolyzable organo-silane which is grafted onto macromolecules of said thermoplastic polyurethane by means of a bonding agent. Said organo-silane has general formula (I), wherein R1,R2,R3=aliphatic alkyl, aromatic alkyl; n>1; R4 is an organic radical which can react with said bonding agent which comprises at least two isocyanate functions and the thermoplastic polyurethane obtained can, after transformation, become automatically cross-linked by coming into contact with water molecules in order to become thermosetting. The invention also relates to a product which can be obtained according to the inventive method.Type: GrantFiled: December 10, 2001Date of Patent: March 1, 2005Assignee: Noveon IP Holdings Corp.Inventors: Didier Lagneaux, Stephane Dassin, Michel Dumon, Francoise Mechin, Jean-Pierre Pascault
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Patent number: 6846564Abstract: The invention relates to cross-linked acrylic microparticles, a method for the production thereof by polymerization in a dispersion in a non aqueous medium and to the uses thereof in covering or moulding compositions involving a favourable compromise between hardness, flexibility and adhesion. The micropparticles are obtained from a composition comprising: 50-99% mols of a constitutent (A) consisting of Cardura E 10 (meth)acrylate and optionally alkyl (meth)acrylate in C2-C8; a compound (B) consisting of at least one monomer or oligomer having at least 2 ethylenic unsaturations; a compound (C) consisting of at least one monomer or oligomer having in addition to one ethylenic unsaturation at least one second function (F1) with the possibility of at least partial chemical modification of the initial functions f1 into final functions f2.Type: GrantFiled: March 24, 2000Date of Patent: January 25, 2005Assignee: Cray Valley, S.A.Inventors: Jean-Pierre Pascault, Ludovic Valette, Philippe Barbeau, Benoit Magny
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Publication number: 20040236035Abstract: Thermoplastic polyurethane, either alone or blended with other polymers, are grafted with diisocyanate trimers or blocked isocyanates. The thermoplastic polyurethane is crosslinked at a temperature above 85° C. to make the composition thermosetting. The crosslinked compositions have low compression set and are insoluble in THF.Type: ApplicationFiled: April 20, 2004Publication date: November 25, 2004Inventors: Didier Lagneaux, Jean-Pierre Pascault, Michel Dumon, Francoise Mechin
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Publication number: 20040034124Abstract: The present invention relates to a thermoset material with improved impact resistance comprising:Type: ApplicationFiled: August 21, 2003Publication date: February 19, 2004Inventors: Francois Court, Ludwik Leibler, Jean-Pierre Pascault, Sophie Ritzenthaler
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Publication number: 20040030026Abstract: The invention concerns a thermosetting elastomer composition based on modified polycyanurate with improved thermal resistance obtainable by a polymerisation method in the presence of a catalyst (D) of a mixture comprising at least: (A) a cyanate, (B) a block copolymer consisting of: a) at least a central block (B1) non-miscible with the cyanate and sufficiently long to provide the composition with elastomeric character; and b) at least two terminal blocks (B2) located on each side of the central block and comprising groups reactive with the cyanate, each of the blocks (B2) being sufficiently long to be miscible with the cyanate; and (C) a mineral filler reactive with the cyanate, in proportions such that the ratio r is not less than 5, but remains less than a threshold value to avoid phase inversion, said method comprising steps which consist in: I) mixing (A), (B), (C) and (D) until a homogeneous mixture is obtained at a temperature higher than the melting point of (A) and of (B) but lower than about 130°Type: ApplicationFiled: June 26, 2003Publication date: February 12, 2004Inventors: Francoise Mechin, Jean-Pierre Pascault, Stephanie Lambour, Jacques Ferrand
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Patent number: 6612343Abstract: The invention describes the use of compositions containing at least one thermoplastic polymer and an epoxy resin modified by at least one aromatic polyamine to coat surfaces, especially pipes through which oil is transported. The polymer compositions used contain at least one thermoplastic polymer which is preferably amorphous selected from the group formed by polysulphones, polyetherimides and polyphenylene esters and at least one epoxy resin modified by at least one aromatic polyamine containing at least two primary amine groups in its molecule. Different layers of polymers are deposited on different types of surface, more particularly as internal and external coatings for conduits. The invention also provides a surface coating comprising such compositions. Multi-layer coatings are also produced.Type: GrantFiled: February 25, 2002Date of Patent: September 2, 2003Assignee: Institut Francais du PetroleInventors: Yves Camberlin, Jacky Grenier, Stéphane Poncet, Anthony Bonnet, Jean-Pierre Pascault, Henri Sautereau
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Patent number: 6586097Abstract: These crosslinked microparticles between 10-300 nm in size are obtained by dispersion polymerization, in non-aqueous medium which is non-solvent for the polymer formed, of a composition of ethylenically unsaturated polymerizable compounds, comprising: at least one monomer A, comprising only one ethylenic unsaturation, giving the microparticles formed in the said non-aqueous medium self-stabilization during and after polymerization, without any addition of polymer having the function of a stabilizing agent, tither before, during or after polymerization, at least one compound B comprising at least two ethylenic unsaturations and optionally, depending on the case: at least one compound C comprising only one ethylenic unsaturation and/or at least one compound D which is different from A, B and C and comprising at least one ethylenic unsaturation which can undergo radical-mediated polymerization and at least one second reactive function f1 which is other than an ethylenic unsaturation.Type: GrantFiled: December 12, 2001Date of Patent: July 1, 2003Assignee: Cray Valley, S.A.Inventors: Jean-Pierre Pascault, Ludovic Valette, Benoit Magny