Patents Assigned to Arkema
  • Patent number: 11613640
    Abstract: The invention relates to polyvinylidene fluoride (PVDF) copolymer compositions that have improved crosslinking efficiency and performance. The PVDF copolymer contains a high level (>14 and preferably greater than 16 wt %) of a fluorinated comonomer, and has a high molecular weight as measured by the melt viscosity at 230° C. and 100 sec?1 of 18 to 40 kpoise. The composition can be effectively cross-linked with a low level radiation (high cross-linking efficiency). The cross-linked composition is useful in high-temperature applications, such as automotive wire and cable, and heat shrink tubing.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: March 28, 2023
    Assignee: Arkema Inc.
    Inventors: James J. Henry, Gregory S. O'Brien
  • Publication number: 20230089774
    Abstract: A process including: the provision of a semicrystalline or crystallizable composition, having a glass transition temperature Tg, including at least one polyaryletherketone; the provision of a compression forming means including: a mold, the mold having at least one cavity; the preparation of the composition in the molten state in said at least one cavity, the mold having a temperature T0 at the end of the preparation stage; the compression and the cooling of the composition in the molten state, the mold being cooled from the temperature T0 down to a final temperature Tfof less than or equal to (Tg+30)° C., to form a compression-formed article; and the removal of the compression-formed article from the mold; in which the composition has a melting point strictly of less than 340° C.
    Type: Application
    Filed: December 18, 2020
    Publication date: March 23, 2023
    Applicant: ARKEMA FRANCE
    Inventors: Jérôme PASCAL, Yves DEYRAIL, Philippe BUSSI, Clément PAUL
  • Publication number: 20230092802
    Abstract: A subject of the present invention is a composition comprising: at least one recycled bituminous product, at least one epoxidized oil, and at least one bitumen additive. The invention also relates to the use thereof for the preparation of a mix. Another subject of the invention is a mix comprising the composition according to the invention.
    Type: Application
    Filed: February 5, 2021
    Publication date: March 23, 2023
    Applicant: Arkema France
    Inventors: Rabi Inoubli, Gilles Barreto, Justine Cantot
  • Publication number: 20230085897
    Abstract: A composition based on poly(ether ether ketone) (PEEK) including poly(ether ketone ketone) (PEKK), wherein the poly(ether ketone ketone) (PEKK) includes a mixture of terephthalic and isophthalic units, the percentage by weight of terephthalic units, with respect to the sum of the terephthalic and isophthalic units, being between 55 and 85%, limits included, and preferably between 55 and 70%, the composition including between 1 and 40%, limits included, preferably between 5 and 40% and more preferably still between 10 and 30% by weight of PEKK, with respect to the total weight of the composition.
    Type: Application
    Filed: November 28, 2022
    Publication date: March 23, 2023
    Applicant: ARKEMA FRANCE
    Inventors: Benoît BRULE, Richard Audry, Jerome PASCAL
  • Publication number: 20230093134
    Abstract: The present invention relates to a process for treating a polyamide-based composition which is intended to be recycled. More particularly, the present invention relates to a process for treating a composition, typically a powder based on untransformed polyamides during the manufacture of an object in 3D printing. The invention also relates to the use of the recycled composition.
    Type: Application
    Filed: February 9, 2021
    Publication date: March 23, 2023
    Applicant: ARKEMA FRANCE
    Inventors: Thierry BRIFFAUD, Jean-Jacques FLAT
  • Patent number: 11608315
    Abstract: The invention relates to a process for preparing methyl mercaptan from a mixture of carbon oxide, hydrogen sulfide and hydrogen, in the presence of a catalyst based on molybdenum and potassium supported on zirconia, said catalyst not comprising any promoter.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: March 21, 2023
    Assignees: Arkema France, Universite Lille 1-Sciences et Technologies, Centre National de la Recherche Scientifique (CNRS)
    Inventors: Georges Frémy, Hélori Salembier, Carole Lamonier, Pascal Blanchard
  • Publication number: 20230080953
    Abstract: The use of a composition including a mixture of at least one non-reactive thermoplastic polymer of Tg >40° C., especially >100° C., in particular >120° C., and at least one reactive thermoplastic prepolymer, with a fibrous material, for the preparation of a fibrous material impregnated with the composition, the composition having an initial melt viscosity during the impregnation, as measured in plate-plate rheology under 1 Hz and 2% strain, at a temperature of 300° C., of less than the viscosity of the same composition devoid of reactive prepolymer, measured under the same conditions, and/or a ductility, after in situ polymerization of the reactive thermoplastic prepolymer in the composition during the impregnation and after the impregnation, that is at least equivalent to the ductility of the same composition devoid of non-reactive thermoplastic polymer, and of which said reactive thermoplastic prepolymer is polymerized to the same number-average molecular mass (Mn).
    Type: Application
    Filed: February 23, 2021
    Publication date: March 16, 2023
    Applicant: ARKEMA FRANCE
    Inventors: Thibaut SAVART, Lise DEVES, Gilles HOCHSTETTER
  • Patent number: 11603424
    Abstract: The invention relates to a crosslinkable composition, which comprises a component a) at least one halogenated bisphenol A diglycidyl ether tetra(meth)acrylate and a component b) at least one diluent from mono(meth)acrylates of a monoalcohol comprising a biphenyl structure, and at least one optional component from components c), d), e), f) and g). It also relates to its use for coatings or materials, in particular for 3D printed articles for optical applications, as it also relates to the crosslinked composition and to the finished product, in particular the 3D article which results therefrom.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: March 14, 2023
    Assignee: Arkema France
    Inventor: Guillaume Monnier
  • Publication number: 20230072410
    Abstract: The invention relates to the use of an additive chosen from the compounds of formula (1) and the compounds of formula (2) as follows: in which A, B, E, Y, Z and d and j are as defined in the description, the anti-ageing additive being present in an amount of between 0.01% and 10% by weight, relative to the total weight of the bituminous product, in order to delay the ageing of the bitumen. The invention also relates to a composition comprising:—a bituminous product,—at least one anti-ageing additive as described above, and—at least one anti-oxidant agent, the anti-ageing additive being present in an amount of between 0.01% and 10% by weight, relative to the total weight of the bituminous product.
    Type: Application
    Filed: February 5, 2021
    Publication date: March 9, 2023
    Applicant: Arkema France
    Inventors: Rabi Inoubli, Gilles Barreto
  • Publication number: 20230075842
    Abstract: Multilayer structure for transporting hydrogen, including, from the inside, at least one sealing layer and at least one composite reinforcing layer, an innermost composite reinforcing layer being wound around an outermost adjacent sealing layer, the sealing layers of a composition predominantly of at least one semi-crystalline, long-chain polyamide thermoplastic polymer P1i (i=1 to n, n being the number of sealing layers), the Tf of which, as measured according to ISO 11357-3: 2013, is greater than 160° C., with the exception of one polyether block amide (PEBA), up to 50% by weight of impact modifier relative to the total weight of the composition and up to 1.5% by weight of plasticiser relative to the total weight of the composition, the composition being free of nucleating agent, and at least one of the composite reinforcing layers being of a fibrous material.
    Type: Application
    Filed: January 26, 2021
    Publication date: March 9, 2023
    Applicant: ARKEMA FRANCE
    Inventors: Nicolas DUFAURE, Patrick DANG, Antoine GOUPIL
  • Patent number: 11597002
    Abstract: Curable compositions contain at least one polymerizable ionic species and, when cured (for example, by photocuring), provide cured compositions which are thermoplastic and yet fragmentable by a protic liquid medium such as water. The polymerizable ionic species corresponds to Formula (I) A+B? wherein A+ is a cationic species having a cationic functional group and a first polymerizable, ethylenically unsaturated functional group; and B? is an anionic species having an anionic functional group and a second polymerizable, ethylenically unsaturated functional group which is the same as or different from the first polymerizable, ethylenically unsaturated functional group. The curable compositions are useful for forming sacrificial or temporary articles, for example by three-dimensional printing methods.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: March 7, 2023
    Assignee: Arkema France
    Inventor: Sean Nunez
  • Patent number: 11598452
    Abstract: The present invention relates to a multilayer tubular structure (MLT) intended for the transport of fluids, in particular of petrol, especially alcohol-containing petrol, comprising, from the outside inwards, at least one barrier layer (1) and at least one inner layer (2) located below the barrier layer, said inner layer (2), or all the layers (2) and the other optional layers located below the barrier layer, containing on average from 0 to 1.5% by weight of plasticizer relative to the total weight of the composition of the layer (2) or to the total weight of all the compositions of the layers (2) and the other optional layers located below the barrier layer, respectively, said inner layer (2) predominantly comprising at least one polyamide of aliphatic type or consisting of more than 75% of aliphatic units, said aliphatic polyamide being chosen from: a polyamide denoted A, having a mean number of carbon atoms per nitrogen atom, denoted CA, of from 4 to 8.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: March 7, 2023
    Assignee: Arkema France
    Inventors: Thibaut Montanari, Christelle Recoquille, Bertrand Verbauwhede, Nicolas Dufaure, Florent Dechamps
  • Publication number: 20230060165
    Abstract: The field of molded articles and fiber-reinforced thermoplastic compositions for obtaining them. The use of the reinforced thermoplastic composition for obtaining a thin molded article with reduced warpage. The composition may include: from 30 to 70% by weight of an amorphous polyamide matrix by total weight of the composition; from 30 to 70% by weight of glass fibers with a circular cross-section by total weight of the composition; and optionally additives.
    Type: Application
    Filed: June 25, 2020
    Publication date: March 2, 2023
    Applicant: Arkema France
    Inventors: Stefânia CASSIANO GASPAR, Benoît BRULE, Mathieu SABARD, Xiong YAO, Marie POMMIER DE SANTI
  • Patent number: 11591425
    Abstract: Curable compositions having desirable attributes such as rapid curing rates and enhanced physical properties are prepared using admixtures of one or more (meth)acrylate-functionalized compounds and one or more reactive comonomers, such as 1,1-diester-1-alkenes (e.g., methylene malonates), 1,1-diketo-1-alkenes, 1-ester-1-keto-1-alkenes and/or icatonates.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: February 28, 2023
    Assignee: Arkema France
    Inventors: Margaux Guichard, Brendan T. McGrail, William C. Wolf, Jeffrey A. Klang
  • Patent number: 11591493
    Abstract: Heterocyclic-functional resins, such as epoxides, oxetanes, cyclic carbonates, lactides and lactones, are used in radiation-curable formulations along with ethylenically unsaturated materials such as (meth)acrylates to achieve improved mechanical properties and/or lower shrinkage in the cured compositions prepared therefrom as compared to formulations containing the ethylenically unsaturated materials but no heterocyclic-functional resin. Polymerizable, ethylenically unsaturated metal complexes, such as Zn and Ca carboxylates prepared using unsaturated carboxylic acids or anhydrides, may be employed to effect thermal cure of the heterocyclic-functional resin component of such formulations, which are particularly useful in the production of 3D-printed articles and the like.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: February 28, 2023
    Assignee: Arkema France
    Inventors: Brendan McGrail, William Wolf
  • Patent number: 11591504
    Abstract: A composition including a lubricant based on polyol esters (POEs) or PVE and a refrigerant F including from 1 to 99% by weight of trans-1,3,3,3-tetrafluoropropene (trans-HFO-1234ze) and from 1 to 99% by weight of 1,1,1,2-tetrafluoroethane. Also, the use of the composition including a lubricant and refrigerant in refrigeration, air conditioning and heat pumps.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: February 28, 2023
    Assignee: ARKEMA FRANCE
    Inventors: Wissam Rached, Beatrice Boussand
  • Publication number: 20230057798
    Abstract: The field of molded articles and fiber-reinforced thermoplastic compositions for obtaining them. The use of the reinforced thermoplastic composition for obtaining a thin molded article with reduced warpage. The composition may include: from 30 to 70% by weight of an amorphous polyamide matrix by total weight of the composition; from 30 to 70% by weight of glass fibers with a circular cross-section by total weight of the composition; and optionally additives.
    Type: Application
    Filed: June 28, 2019
    Publication date: February 23, 2023
    Applicant: Arkema France
    Inventors: Mathieu SABARD, Benoît BRULE, Stefania CASSIANO GASPAR, Marie POMMIER DE SANTI, Xiong YAO
  • Publication number: 20230051363
    Abstract: The use of a heat-transfer composition including at least one refrigerant chosen from halogenated hydrocarbons, perhalogenated hydrocarbons, fluorinated ketones, fluorinated ethers and also combinations thereof, and at least one dielectric fluid, for cooling a battery of an item of equipment, such as an electric or hybrid vehicle, the heat-transfer composition having a volume resistivity of greater than or equal to 106 ?·cm at 25° C.
    Type: Application
    Filed: October 19, 2020
    Publication date: February 16, 2023
    Applicant: ARKEMA FRANCE
    Inventors: Laurent ABBAS, Dominique GARRAIT, Jérémie WALKER
  • Patent number: 11578170
    Abstract: A composition including at least one polyamide polymer obtained from at least one reactive polyamide prepolymer including at least one chain extender (PA1-All1-PA1), the polyamide polymer being prepared at a temperature T1 no lower than the temperature melting temperature or glass transition temperature of the polymer and having a mean molecular weight Mn1. The composition has a melt viscosity which can be modulated according to the temperature to which the composition is exposed, wherein the temperature is between T2 and T3, T2 and T3 being higher than T1, and the melt viscosity ?2 or ??3 observed at the temperature T2 or T3, respectively, being lower than the melt viscosity ?2 or ?3 of the polyamide polymer, which does not include a chain extender and has the same mean molecular weight Mn1(PA1) observed at the same temperature T2 or T3. The composition includes one or more polyamides.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: February 14, 2023
    Assignee: ARKEMA FRANCE
    Inventors: Thierry Briffaud, Gilles Hochstetter, Mathieu Capelot
  • Patent number: 11578345
    Abstract: Provided is process for the synthesis of at least one functionalized organic polysulfide.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: February 14, 2023
    Assignee: Arkema France
    Inventors: Georges Fremy, Arnaud Masselin