Patents by Inventor Christian Lacroix
Christian Lacroix 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: 10919015Abstract: A method for uniformly distributing a process liquid within a process vessel includes providing a process liquid to a fouling-resistant liquid distributor installed within a process vessel having a cross-sectional area; causing rotational movement of the fouling-resistant liquid distributor; uniformly distributing the process liquid over the cross-sectional area within the process vessel; and simultaneously self-rinsing the fouling-resistant liquid distributor with a portion of the process liquid during uniform distribution. A system is also disclosed which includes a supply of process fluid, a stationary conduit and a liquid distribution head attached to the conduit. The liquid distribution head is motive, powered by a fluid, and includes at least one process liquid delivery port. The at least one process liquid delivery port is configured to provide a +10° or greater angle of liquid coverage when the liquid distribution head is moving.Type: GrantFiled: February 13, 2020Date of Patent: February 16, 2021Assignee: Arkema FranceInventors: Michael S. DeCourcy, Christian Lacroix, Etienne Bastien
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Publication number: 20200179889Abstract: A method for uniformly distributing a process liquid within a process vessel includes providing a process liquid to a fouling-resistant liquid distributor installed within a process vessel having a cross-sectional area; causing rotational movement of the fouling-resistant liquid distributor; uniformly distributing the process liquid over the cross-sectional area within the process vessel; and simultaneously self-rinsing the fouling-resistant liquid distributor with a portion of the process liquid during uniform distribution. A system is also disclosed which includes a supply of process fluid, a stationary conduit and a liquid distribution head attached to the conduit. The liquid distribution head is motive, powered by a fluid, and includes at least one process liquid delivery port. The at least one process liquid delivery port is configured to provide a +10° or greater angle of liquid coverage when the liquid distribution head is moving.Type: ApplicationFiled: February 13, 2020Publication date: June 11, 2020Inventors: Michael S. DECOURCY, Christian LACROIX, Etienne BASTIEN
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Patent number: 10596537Abstract: A method for uniformly distributing a process liquid within a process vessel includes providing a process liquid to a fouling-resistant liquid distributor installed within a process vessel having a cross-sectional area; causing rotational movement of the fouling-resistant liquid distributor; uniformly distributing the process liquid over the cross-sectional area within the process vessel; and simultaneously self-rinsing the fouling-resistant liquid distributor with a portion of the process liquid during uniform distribution. A system is also disclosed which includes a supply of process fluid, a stationary conduit and a liquid distribution head attached to the conduit. The liquid distribution head is motive, powered by a fluid, and includes at least one process liquid delivery port. The at least one process liquid delivery port is configured to provide a +10° or greater angle of liquid coverage when the liquid distribution head is moving.Type: GrantFiled: July 18, 2014Date of Patent: March 24, 2020Assignee: Arkema FranceInventors: Michael S. Decourcy, Christian Lacroix, Etienne Bastien
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Patent number: 10239816Abstract: The invention is directed to a process for recovering/purifying (meth)acrylic acid which does not use azeotropic solvent and is based on the use of two columns for purifying a reaction mixture comprising (meth)acrylic acid. The process according to the invention includes a dry vacuum pump condensation system, which makes it possible to reduce the amount of final aqueous discharges.Type: GrantFiled: March 4, 2016Date of Patent: March 26, 2019Assignee: Arkema FranceInventors: Sandeep Jain, Christian Lacroix, Michel Jean Fauconet
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Publication number: 20180079706Abstract: The invention is directed to a process for recovering/purifying (meth)acrylic acid which does not use azeotropic solvent and is based on the use of two columns for purifying a reaction mixture comprising (meth)acrylic acid. The process according to the invention includes a dry vacuum pump condensation system, which makes it possible to reduce the amount of final aqueous discharges.Type: ApplicationFiled: March 4, 2016Publication date: March 22, 2018Inventors: Sandeep JAIN, Christian LACROIX, Michel Jean FAUCONET
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Patent number: 9783479Abstract: The invention relates to the production of (meth)acrylic acid, and to implementation of a step of condensing water contained in a recycled gas effluent and/or in the air feed in a (meth)acrylic acid production process, which further includes a process for purifying a reaction mixture comprising (meth)acrylic acid without using azeotropic solvent and based on the use of two distillation columns.Type: GrantFiled: March 8, 2017Date of Patent: October 10, 2017Assignee: Arkema FranceInventors: Sandeep Jain, Christian Lacroix
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Publication number: 20170283358Abstract: The invention relates to the production of (meth)acrylic acid, and to implementation of a step of condensing water contained in a recycled gas effluent and/or in the air feed in a (meth)acrylic acid production process, which further includes a process for purifying a reaction mixture comprising (meth)acrylic acid without using azeotropic solvent and based on the use of two distillation columns.Type: ApplicationFiled: March 8, 2017Publication date: October 5, 2017Inventors: Sandeep Jain, Christian LACROIX
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Publication number: 20160175796Abstract: A method for uniformly distributing a process liquid within a process vessel includes providing a process liquid to a fouling-resistant liquid distributor installed within a process vessel having a cross-sectional area; causing rotational movement of the fouling-resistant liquid distributor; uniformly distributing the process liquid over the cross-sectional area within the process vessel; and simultaneously self-rinsing the fouling-resistant liquid distributor with a portion of the process liquid during uniform distribution. A system is also disclosed which includes a supply of process fluid, a stationary conduit and a liquid distribution head attached to the conduit. The liquid distribution head is motive, powered by a fluid, and includes at least one process liquid delivery port. The at least one process liquid delivery port is configured to provide a +10° or greater angle of liquid coverage when the liquid distribution head is moving.Type: ApplicationFiled: July 18, 2014Publication date: June 23, 2016Inventors: Michael S. DECOURCY, Christian LACROIX, Etienne BASTIEN
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Patent number: 9029296Abstract: There is described herein a superconducting segment and method of making same comprising one or several layers with very high electrical resistivity, acting as a current flow diverter when the current transfers from the superconductor to the stabilizer. The purpose of this current flow diverter is: i) to increase the contact resistance between the superconductor and the stabilizer, by reducing the contact area, and ii) to force the current to flow along a specific path, so as to increase momentarily the current density in a specific portion of the stabilizer. The consequence of i) and ii) is that heat generated at the extremities of the normal zone is increased and spread over a longer length along the superconducting segment, which increases the NZPV and thus, the uniformity of the quench.Type: GrantFiled: February 1, 2013Date of Patent: May 12, 2015Assignee: Polyvalor, Limited PartnershipInventors: Christian Lacroix, Frederic Sirois, Michael Robert Wertheimer
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Publication number: 20150045231Abstract: There is described herein a superconducting segment and method of making same comprising one or several layers with very high electrical resistivity, acting as a current flow diverter when the current transfers from the superconductor to the stabilizer. The purpose of this current flow diverter is: i) to increase the contact resistance between the superconductor and the stabilizer, by reducing the contact area, and ii) to force the current to flow along a specific path, so as to increase momentarily the current density in a specific portion of the stabilizer. The consequence of i) and ii) is that heat generated at the extremities of the normal zone is increased and spread over a longer length along the superconducting segment, which increases the NZPV and thus, the uniformity of the quench.Type: ApplicationFiled: February 1, 2013Publication date: February 12, 2015Inventors: Christian Lacroix, Frederic Sirois, Michael Robert Wertheimer
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Patent number: 5659072Abstract: An acrylic acid ester is manufactured by reaction of the said acid and an alcohol chosen from C.sub.Type: GrantFiled: June 19, 1995Date of Patent: August 19, 1997Assignee: Elf Atochem S.A.Inventors: Jacqueline Bessalem, Michel Fauconet, Christian Lacroix, Nathalie Hess
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Patent number: 5606102Abstract: In this esterification, catalysed by H.sub.2 SO.sub.4, the crude reaction mixture comprising ester, butanol, acrylic acid, BuSO.sub.4 H and traces of H.sub.2 SO.sub.4 is obtained; BuSO.sub.4 H is hydrolysed (in R2) to H.sub.2 SO.sub.4 using pure water or water generated during the reaction; after hydrolysis, the medium is separated by settling (in D2) into an organic phase containing ester, butanol and part of the unconverted acid; and an aqueous phase containing H.sub.2 SO.sub.Type: GrantFiled: July 27, 1995Date of Patent: February 25, 1997Assignee: Elf Atochem S.A.Inventors: Michel Fauconet, Christian Lacroix, Nathalie Hess, Jacqueline Bessalem
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Patent number: 5260480Abstract: A process for the preparation of aqueous solutions of unsaturated quaternary ammonium salts corresponding to the following formula:H.sub.2 C=C(R.sub.3)--C(O)--A--R.sub.4 --N.sup.+ (R.sub.1)(R.sub.2)(R)X.sup.Type: GrantFiled: May 14, 1992Date of Patent: November 9, 1993Assignee: NorsolorInventors: Christian Lacroix, Raymond Hess
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Patent number: 5207874Abstract: The purification by distillation of glycidyl (meth)acrylate containing light products containing epichlorohydrin and light impurities, and heavy impurities comprises: in a first stage, a distillation of the glycidyl (meth)acrylate to be purified is conducted in the presence of a first solvent, e.g., water, capable of forming a low boiling point heteroazeotrope with the light impurities and epichlorohydrin, so as to obtain a head fraction which consists essentially of a solvent-light products heteroazeotrope; and, in a second stage, the glycidyl (meth)acrylate thus freed from the light products is subjected to a distillation in the presence of a second solvent, e.g.Type: GrantFiled: June 20, 1991Date of Patent: May 4, 1993Assignee: AtochemInventors: Raymond Hess, Christian Lacroix
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Patent number: 4745214Abstract: For the preparation of an aqueous solution of unsaturated quaternary ammonium salts of the formula (I):H.sub.2 C.dbd.C--(R.sub.3)C(O)--A--R.sub.4 --N.sup..sym. (R.sub.1)(R.sub.2)(R).X.sup..crclbar.,e.g., methacryloyloxyethyltrimethylammonium chloridethe steps of:(a) reacting a (meth)acrylic monomer, e.g., dimethylaminoethyl methacrylate in a closed reactor, in the presence of a polymerization inhibitor, e.g., 3,5-ditert-butyl-4-hydroxytoluene, with 5 to 20% of the weight quantity of quaternizing agent, e.g., methylchloride, required for the reaction, wherein the latter agent is introduced into the reactor continuously,(b) adding water and the remainder of the quaternizing agent continuously until the required concentration of quaternary ammonium salt in water is obtained,(c) maintaining the temperature at a value of between 30.degree. and 60.degree. C.Type: GrantFiled: June 20, 1986Date of Patent: May 17, 1988Assignee: NorsolorInventors: Raymond Hess, Christian Lacroix