Abstract: Provided is a composition including at least one bitumen and at least one additive as defined herein. The composition provides emulsions of all types of bitumens, which can be used in the production of cold-poured mixes, having an improved internal strength and a rapid increase in cohesion.
Type:
Application
Filed:
September 14, 2017
Publication date:
August 15, 2019
Applicant:
ARKEMA FRANCE
Inventors:
Eric Jorda, Sandrine Ligier, Vincent Luca, Isabelle Birken
Abstract: Binary compositions of 2,3,3,3-tetrafluoropropene and difluoromethane, as a heat transfer fluid in compression, low-temperature and average temperature refrigeration systems, with exchangers operating in counterflow mode or in split flow mode with counterflow tendency. Also, to a heat transfer method. The binary compositions can replace R-404A and R-407C (ternary mixture containing 52 wt. % of HFC-134a, 25 wt. % of pentafluoroethane and 23 wt. % of difluoromethane) in compression-type heat-transfer systems with exchangers operating in countercurrent mode or in crossed-current mode with countercurrent tendency.
Abstract: The invention relates to a process for producing at least one alkoxylated polyphenol comprising the following successive steps: (a) reacting at least one polyphenol, at least one alkoxylating agent, at least one catalyst, in the presence of at least one alkoxylated polyphenol as a solvent, the polyphenol/polyphenol alkoxylated weight ratio as a solvent being less than 2, preferably less than or equal to 1.5, more preferably less than or equal to 1, even more preferably less than or equal to 0.
Type:
Application
Filed:
October 3, 2017
Publication date:
August 15, 2019
Applicant:
Arkema France
Inventors:
Jean-Philippe Gillet, Jean-François Devaux, Philippe Leduc
Abstract: The invention relates to a composition for thermoplastic composite material comprising: 30% to 60% by volume, preferentially 35% to 50% by volume, of a thermoplastic matrix comprising from 50% to 100% by weight of a semi-crystalline polyamide polymer and from 0% to 50% by weight of at least one additive and/or of at least one other polymer, 40% to 70% by volume, preferentially 50% to 65% by volume, of long reinforcing fibers (or of long fibrous reinforcement), said thermoplastic matrix impregnating said long reinforcing fibers (or said long fibrous reinforcement), said semi-crystalline polyamide polymer being: a) a reactive composition comprising or consisting of at least one reactive polyamide prepolymer which is a precursor of said semi-crystalline polyamide polymer, or, as an alternative to a), b) a nonreactive composition of at least one polyamide polymer, said composition being that of said thermoplastic matrix defined above, and said reactive polyamide prepolymer of the composition a) and said pol
Abstract: The present disclosure is directed to improved poly(arylene ether ketone) powders for use in laser sintering, powder coating, compression molding, or transfer molding.
Abstract: The use of an alcoholic compound to improve the miscibility of ammonia with 2,3,3,3-tetrafluoropropene, as well as to compositions of ammonia, 2,3,3,3-tetrafluoropropene and an alcoholic compound, and the use thereof, in particular in heat-transfer applications. A composition including 2,3,3,3-tetrafluoropropene, ammonia and an alcoholic compound having a melting point less than or equal to 0° C.
Abstract: The invention relates to a catalyst comprising an active component based on molybdenum and on potassium and a support based on hydroxyapatite, and also to a process for preparing said catalyst and a process for producing methyl mercaptan in a catalytic process by reaction of carbon monoxide, sulphur and/or hydrogen sulphide and hydrogen, comprising the use of said catalyst.
Abstract: A composition for a thermoplastic composite material having a thermoplastic matrix made of a semi-crystalline polyamide having a specific composition that includes at least two amide units, A, 55-95 mol %, and B, 5-45 mol %. A corresponds to x.T, wherein x is a C9-C18 linear aliphatic diamine and B corresponds to x?.T, wherein x? can be B1): a specific branched x-dependent aliphatic diamine, B2): MXD or B3): a linear x-dependent aliphatic diamine, said polyamide having a glass transition temperature Tg of at least 90° C. and a melting point no higher than 280° C. Also, a method for manufacturing the composite material, the semi-crystalline polyamide polymer, the use of the composition and of the polymer for parts made of composite material, as well as the material and the resulting composite part.
Abstract: The use of circular-section glass fibres in a mixture including at least one MXDZ polyamide, obtained from polycondensation of meta-xylylenediamine (MXD), with a C6 to C18 aliphatic (Z) dicarboxylic acid, and at least one aliphatic polyamide A obtained from the polycondensation of a unit selected from: a C6 to C12 lactam, a C6 to C12 amino acid, and an XY unit obtained from the polycondensation of a C4 to C18 aliphatic diamine (X), and a C6 to C18 aliphatic dicarboxylic acid (Y), circular-section glass fibres and optionally at least one impact modifier and/or at least one additive, said circular-section glass fibres and said mixture constituting a composition, said circular-section glass fibres being present from 30 to 75% by weight and with respect to the total weight of the composition, to improve the mechanical properties of said composition, including elongation at break, after processing, in particular by injection or compression moulding.
Type:
Application
Filed:
October 18, 2017
Publication date:
August 8, 2019
Applicant:
Arkema France
Inventors:
Benoît BRULE, Antoine BREUIL, Hao WANG, Xiong YAO
Abstract: The use of at least one MXDZ polyamide, obtained from the polycondensation of meta-xylylenediamine (MXD), with a C6 to C18 aliphatic (Z) dicarboxylic acid, in particular C6 to C12, in a mixture including at least one aliphatic polyamide A obtained from the polycondensation of a unit selected from: a C6 to C12 lactam, a C6 to C12amino acid, and an XY unit obtained from the polycondensation of a C4 to C18, aliphatic diamine (X), especially C4 to C12, and a C6 to C18 aliphatic dicarboxylic acid (Y), especially C6 to C12, circular-section glass fibres and optionally at least one impact modifier and/or at least one additive, said at least one MXDZ polyamide and said mixture constituting a composition, and the MXDZ/A weight ratio being from 0.11 to 0.83, in particular from 0.11 to 0.66, to limit the warping of said composition during processing, in particular by injection or compression moulding.
Type:
Application
Filed:
October 18, 2017
Publication date:
August 8, 2019
Applicant:
ARKEMA FRANCE
Inventors:
Benoît BRULE, Antoine BREUIL, Hao WANG, Xiong YAO
Abstract: A graft copolymer comprising: a core polymer comprising a crosslinked or non-crosslinked polysaccharide, a plurality of primary graft polymers covalently grafted to the core polymer, a plurality of secondary graft polymers covalently grafted to each primary graft polymer, an injectable dermal aesthetic formulation comprising such a graft copolymer and a method of preparing such a graft copolymer.
Abstract: X-Ray photoelectron spectroscopy (XPS) is used to assess or predict the catalytic activity of a chromium oxyfluoride catalyst in a reaction wherein a chlorinated compound is converted to a fluorinated compound.
Type:
Grant
Filed:
August 3, 2016
Date of Patent:
July 30, 2019
Assignee:
Arkema Inc.
Inventors:
Pierre Ricou, Nicolas Doucet, Anne Marie Pigamo
Abstract: A method for manufacturing a composite part including a fibrous reinforcement and a thermoplastic polymer matrix, which includes the steps of i) depositing the fibrous reinforcement in a two-part mold having a seal compressible by evacuating said mold having no vent, ii) filling the evacuated mold by injecting, in the molten state, a two-component reactive system made of a reactive thermoplastic prepolymer, the injection being carried out using a device having two distinct compartments for each one of the two reactive components mixed in a static mixer, followed by a compression and compaction of the content of the mold, and iii) removing the part from the mold, without any finishing treatment. Further, a device for implementing said method, to the resulting part and to the use of said method in an “in-mold” assembly method.
Type:
Grant
Filed:
October 21, 2013
Date of Patent:
July 23, 2019
Assignee:
ARKEMA FRANCE
Inventors:
Jean-Pierre Cauchois, Gilles Hochstetter, Michel Glotin
Abstract: Stable organic peroxide compositions include at least one organic peroxide (e.g., tert-butyl hydroperoxide), at least one dye (e.g., an FD&C dye), and at least one alcohol (e.g., propylene glycol, tert-butanol, and/or glycerin).
Type:
Grant
Filed:
March 10, 2016
Date of Patent:
July 23, 2019
Assignee:
Arkema Inc.
Inventors:
Marina Despotopoulou, Scot A. Swan, Leonard H. Palys, Joseph M. Brennan, Michael B. Abrams, Scott J. Schwartz
Abstract: Composition including: (A) 50% to 95% of at least one semicrystalline polyamide of formula A/Z in which: A is an aliphatic repeating unit chosen from a unit obtained from the polycondensation of at least one amino acid and a unit obtained from the polycondensation of at least one lactam or a unit X.Y obtained from the polycondensation of at least one diamine, and of at least one dicarboxylic acid, and Z represents another polyamide and is included from 0 to 20%; (B) 5% to 50% of at least one semicrystalline copolyamide comprising amide units (Ba1) and including polyether units (Ba2), having a glass transition temperature (Tg) below 75° C.; (C) 0% to 20% by weight of fibres and/or fillers, (D) 0% to 20% of at least one impact modifier, (E) 0% to 5% of at least one additive, for the manufacture of a sports article.
Type:
Grant
Filed:
March 23, 2015
Date of Patent:
July 23, 2019
Assignee:
ARKEMA FRANCE
Inventors:
François Fernagut, René-Paul Eustache, Mathieu Sabard, Yves Deyrail
Abstract: A heat transfer method using ternary compositions containing 2,3,3,3-tetrafluoropropene, 1,1-difluoroethane and difluoromethane, said compositions being especially interesting as a heat transfer fluid in compression refrigeration systems comprising exchangers operation in counterflow mode or in split flow mode with counterflow tendency. The use of a ternary composition of 2,3,3,3-tetrafluoropropene, 1,1-difluoroethane and difluoromethane as heat transfer fluid in compression-type refrigeration systems with exchangers operating in countercurrent mode or in crossed-current mode with countercurrent tendency.
Abstract: The invention relates to a thermal conversion vessel (200) used during amidification step of acetone cyanohydrin (ACH), in the industrial process for production of a methyl methacrylate (MMA) or methacrylic acid (MAA). The thermal conversion vessel (200) is used for converting an hydrolysis mixture of ?-hydroxyisobutyramide (HIBAM), ?-sulfatoisobutyramide (SIBAM), 2-methacrylamide (MACRYDE) and methacrylique acid (MAA), into a mixture of 2-methacrylamide (MACRYDE). at least one compartment (C1, C2, C3, . . . Ci) comprising an inner wall (206a, 206b, . . . 206i) separating said compartment into two communicating parts (C1a, C1b) by a passage provided between the bottom of said vessel and said inner wall, said compartment having a space above said inner wall, for separating gas phase from liquid phase during thermal conversion, said compartment being connected to an outlet valve (204a, 204b, . . . 204i). Such vessel allows obtaining a high yield thermal conversion in very safe conditions.
Abstract: One subject of the present invention is a composition that combines at least one polyamide having at least one MXD entity, MXD denoting meta-xylylenediamine or a mixture of meta-xylylenediamine and of para-xylylenediamine, with a bioresourced reinforcement. The invention also relates to the conversion of these compositions, by injection molding or extrusion, into objects that have good mechanical properties, said objects corresponding to technical application specifications such as may be found, for example, in the automotive industry, construction, sport and in electrical or electronic fields.
Type:
Grant
Filed:
November 23, 2009
Date of Patent:
July 23, 2019
Assignee:
Arkema France
Inventors:
Benoit Brule, Philippe Bussi, Gilles Hochstetter, Guillaume Le, Barbara Ramfel
Abstract: The invention provides a liquid peroxide composition comprising a subtilisin having a M222 substitution (BPN? numbering) and a peptide based subtilisin stabilizer.
Type:
Application
Filed:
May 30, 2017
Publication date:
July 18, 2019
Applicants:
Novozymes A/S, Arkema Inc.
Inventors:
Victor Casella, Lise Munch Mikkelsen, Priscilla Haasis, Danielle Rhine