Patents Assigned to Vencorex France
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Patent number: 11667768Abstract: The invention relates to a new polyisocyanate composition for producing coatings, said composition comprising at least one monophenol alkyl compound, a mixture of phosphite compounds for preventing yellowing and/or precipitation of the composition, and optionally, a catalyst.Type: GrantFiled: March 5, 2019Date of Patent: June 6, 2023Assignee: VENCOREX FRANCEInventor: Philippe Olier
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Patent number: 9932301Abstract: The invention relates to a modified allophanate compound bearing acrylate functions, resulting from the reaction of a particular allophanate with an ester from the reaction between an acid selected from acrylic acid and methacrylic acid and at least one polyol that does not contain an oxylakylene or aa (poly)oxyalkylene group. The invention further relates to the use of said modified allophanate for preparing a hydrophobic cross-linkable coating composition by means of UV radiation.Type: GrantFiled: March 14, 2014Date of Patent: April 3, 2018Assignee: VENCOREX FRANCEInventor: Philippe Olier
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Patent number: 9708439Abstract: The invention relates to a composition for preparing (poly)urethane from an allophanate and from a hydrophobic resin. The invention also relates to the use of this composition as a replacement for poly(methylene diphenyl diisocyanate) (pMDI), in particular for the preparation of a material for encapsulating an electrical device.Type: GrantFiled: September 6, 2013Date of Patent: July 18, 2017Assignee: VENCOREX FRANCEInventor: Philippe Olier
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Publication number: 20160024002Abstract: The invention relates to a modified allophanate compound bearing acrylate functions, resulting from the reaction of a particular allophanate with an ester from the reaction between an acid selected from acrylic acid and methacrylic acid and at least one polyol that does not contain an oxylakylene or aa (poly)oxyalkylene group. The invention further relates to the use of said modified allophanate for preparing a hydrophobic cross-linkable coating composition by means of UV radiation.Type: ApplicationFiled: March 14, 2014Publication date: January 28, 2016Applicant: VENCOREX FRANCEInventor: Philippe OLIER
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Publication number: 20150232607Abstract: The invention relates to a composition for preparing (poly)urethane from an allophanate and from a hydrophobic resin. The invention also relates to the use of this composition as a replacement for poly(methylene diphenyl diisocyanate) (pMDI), in particular for the preparation of a material for encapsulating an electrical device.Type: ApplicationFiled: September 6, 2013Publication date: August 20, 2015Applicant: VENCOREX FRANCEInventor: Philippe Olier
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Patent number: 8981032Abstract: The invention relates to a modified (poly)isocyanate composition that contains a modified (poly)isocyanate and at least one solvent. The invention also relates to the use of this composition for preparing coatings such as paints and varnishes.Type: GrantFiled: March 21, 2008Date of Patent: March 17, 2015Assignee: Vencorex FranceInventors: Jean-Marie Bernard, Aurore Jomier
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Patent number: 8921594Abstract: A process for phosgenating an amine comprising employing a plug-flow type reactor with internal recycle is disclosed. The process can be continuous, which makes it possible to prepare, in a single stage, a (poly)isocyanate with a good yield, without formation of byproducts and on simplifying the plant in order to carry out the process so as to promote safety.Type: GrantFiled: December 18, 2009Date of Patent: December 30, 2014Assignee: Vencorex FranceInventors: Nicolas Perret, Denis Revelant
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Patent number: 8853308Abstract: A composition comprising: at least one (poly)isocyanate and at least one surfactant comprising an acid or a mixture of acids and an optionally heterocyclic amine or polyamine or a mixture of such amines, the amine or polyamine or at least one amine of said mixture carrying at least one alkylene oxide, preferably ethylene oxide, functional group.Type: GrantFiled: November 18, 2008Date of Patent: October 7, 2014Assignee: Vencorex FranceInventors: Jean-Marie Bernard, Philippe Olier
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Patent number: 8552137Abstract: Disclosed is a compositions comprising isocyanate sub-composition comprising by weight not more than 5% of diisocyanate monomers, a dehydrating agent selected among compounds bearing dihydrocarbylsilyl groups bonded to a metalloid of the chalcogen column or to an atom of the nitrogen column. The invention is applicable to the coatings industry, in particular paints and adhesives.Type: GrantFiled: May 16, 2011Date of Patent: October 8, 2013Assignee: Vencorex FranceInventors: Jean-Marie Bernard, Philippe Barbeau
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Patent number: 8501867Abstract: The mixture of the invention comprises at least one cycloaliphatic polyisocyanate and at least one solvent comprising an ester function and an ether function. An aqueous emulsion can be obtained from this mixture which also comprises a compound bearing a function with a mobile hydrogen, selected from primary or secondary hydroxyl functions, phenol functions, primary and/or secondary amino functions, carboxylic functions and a thiol function or a compound containing precursor functions capable of freeing hydroxyl functions. The emulsion can be used for the manufacture of coatings on a substrate of cement, of wood or especially of leather, and also for the manufacture of adhesives.Type: GrantFiled: April 29, 2008Date of Patent: August 6, 2013Assignee: Vencorex FranceInventors: Philippe Barbeau, Philippe Olier, Johannes Schwarz
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Patent number: 8436066Abstract: Compositions that can be polymerized and/or crosslinked into coatings by cationic and/or radical irradiation contain at least one photoinitiator and at least one compound having at least one isocyanate function.Type: GrantFiled: July 23, 2007Date of Patent: May 7, 2013Assignee: Vencorex FranceInventors: Jean-Marc Frances, Philippe Barbeau, Jean-Marie Bernard, Damien Bourgeois
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Patent number: 8410322Abstract: The present invention relates to a process for preparing dinitrotoluene. The process of the invention for preparing dinitrotoluene from mononitrotoluene, which comprises carrying out a mononitrotoluene nitration reaction using a nitrating mixture comprising nitric acid, sulphuric acid and water resulting in a two-phase medium and separating the organic and aqueous phases of said two-phase medium, is characterized in that the mononitrotoluene nitration is carried out using a nitrating mixture comprising at most 10% by weight of water resulting in a two-phase medium, in that the organic and aqueous phases of said two-phase medium are separated, and in that the aqueous phase derived from the separating operation is recycled, at the end of the mononitrotoluene nitration reaction and before the separation of the organic and aqueous phases, such that the weight ratio of the aqueous phase to the organic phase is at least equal to 1.2.Type: GrantFiled: July 8, 2008Date of Patent: April 2, 2013Assignee: Vencorex FranceInventor: Philippe Marion
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Patent number: 8389613Abstract: Water-emulsifiable polyisocyanate compositions admixed with at least one solvent of formula (1) (R1O)2C(R2)—X—R3 are formulated into aqueous emulsions which advantageously further comprise a compound, bearing a mobile hydrogen function, or a compound containing precursor functions capable of liberating hydroxyl functions, and are useful for producing coatings on a variety of substrates, e.g., made of cement, wood or leather in particular, and also for producing adhesives.Type: GrantFiled: March 27, 2007Date of Patent: March 5, 2013Assignee: Vencorex FranceInventor: Damien Bourgeois