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    PROCESS FOR PRODUCING POLYETHER KETONE KETONE
    21.
    发明申请
    PROCESS FOR PRODUCING POLYETHER KETONE KETONE 审中-公开

    公开(公告)号：US20190040189A1

    公开(公告)日：2019-02-07

    申请号：US16053927

    申请日：2018-08-03

    Applicant: ARKEMA FRANCE

    Inventor： Guillaume LE ,  Julien JOUANNEAU

    IPC: C08G61/12 ,  C08K3/16

    Abstract: A method for the manufacture of polyether ketone ketone (PEKK), including: (i) providing a 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex; (ii) purifying said 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex; (iii) reacting said 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex with at least one difunctional aromatic acyl chloride in a reaction solvent and optional additional Lewis acid to obtain a product mixture including a PEKK-Lewis acid complex; and (iv) decomplexing the PEKK-Lewis acid complex to obtain a PEKK polymer. Further, a composition including at least 40 wt. % of 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex and an anhydrous aprotic solvent or solvent mixture, characterized in that it includes less than 1 wt. %, preferably less than 0.5 wt. % and in particular less than 0.1 wt. % of molecules including xanthydrol groups and its use for the manufacture of polyether ketone ketone.

    POLYAMIDE SYNTHESIS METHOD
    23.
    发明申请
    POLYAMIDE SYNTHESIS METHOD 审中-公开
    聚酰胺合成方法

    公开(公告)号：US20160280854A1

    公开(公告)日：2016-09-29

    申请号：US15036589

    申请日：2014-11-14

    Applicant: ARKEMA FRANCE

    Inventor： Thierry BRIFFAUD ,  Pierre NOGUES ,  Guillaume LE ,  Frédéric MALET

    IPC: C08G69/04 ,  C08G69/08

    CPC classification number: C08G69/04 ,  C08G69/08

    Abstract: The invention concerns a method for producing polyamide from an amino ester of formula NH2—(CH2)n—COOR, in which R represents an alkyl group and n represents an integer ranging from 5 to 14, comprising: a first reaction step in the presence of water, at a first temperature; followed by a second reaction step at a second temperature higher than the first temperature.

    METHOD FOR MANUFACTURING 1,4-BIS (4-PHENOXYBENZOYL)BENZENE AT AN ELEVATED TEMPERATURE
    28.
    发明申请
    METHOD FOR MANUFACTURING 1,4-BIS (4-PHENOXYBENZOYL)BENZENE AT AN ELEVATED TEMPERATURE 有权

    公开(公告)号：US20210363088A1

    公开(公告)日：2021-11-25

    申请号：US17291679

    申请日：2019-11-07

    Applicant: Arkema France

    Inventor： Julien JOUANNEAU ,  Guillaume LE ,  Martin HERBLOT

    IPC: C07C45/46

    Abstract: A method for manufacturing 1,4-bis(4-phenoxybenzoyl)benzene, including: providing a solvent, a Lewis acid, a first reactant and a second reactant, wherein the first reactant and the second reactant are respectively terephthaloyl chloride and diphenyl ether, or reversely; mixing the first reactant in the solvent to make a starting mixture; and, adding the second reactant to the starting mixture; wherein the Lewis acid is mixed, at least partly, to the starting mixture before adding the second reactant to the starting mixture, and/or wherein the Lewis acid is mixed, at least partly, with the second reactant and added together to the starting mixture, and wherein the temperature of the starting mixture is greater than 5° C. during at least part of the step of adding the second reactant to the starting mixture; so as to obtain a product mixture comprising a 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex.

    METHOD FOR IMPREGNATING REINFORCING FIBRES WITH POLYARYLETHERKETONES AND SEMI-PRODUCTS OBTAINED THEREFROM
    30.
    发明申请
    METHOD FOR IMPREGNATING REINFORCING FIBRES WITH POLYARYLETHERKETONES AND SEMI-PRODUCTS OBTAINED THEREFROM 有权

    公开(公告)号：US20210130557A1

    公开(公告)日：2021-05-06

    申请号：US16500160

    申请日：2018-04-05

    Applicant: Arkema France

    Inventor： Benoît BRULE ,  Henri-Alexandre CAYZAC ,  Guillaume LE ,  Jerome PASCAL ,  Fabien SGUERRA

    IPC: C08J5/10 ,  C08J5/24

    Abstract: The invention is targeted mainly at a process for the preparation of a semifinished product comprising a PAEK-based resin and reinforcing fibers, comprising the stages of: a. preparation of a dispersion comprising a PAEK-based resin in the pulverulent form dispersed in an aqueous phase comprising a surfactant; b. bringing the reinforcing fibers into contact with said aqueous dispersion; c. drying the fibers impregnated with dispersion; and d. heating the impregnated fibers to a temperature sufficient for the melting of the resin, so as to form a semifinished product, characterized in that the surfactant is a thermally stable surfactant. It is furthermore targeted at the dispersion of use in said process. Finally, it is targeted at the semifinished products capable of being obtained and also at their use in the manufacture of composite materials.

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