PURIFICATION OF 1,4-BIS (4-PHENOXYBENZOYL)BENZENE BY CENTRIFUGAL FILTRATION

    公开(公告)号:US20210155571A1

    公开(公告)日:2021-05-27

    申请号:US16613456

    申请日:2018-05-17

    Applicant: Arkema France

    Abstract: A method for manufacturing 1,4-bis(4-phenoxybenzoyl)benzene, including: reacting terephthaloyl chloride with diphenyl ether in a reaction solvent and in the presence of a Lewis acid, so as to obtain a product mixture comprising a 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex; putting the product mixture in contact with a protic solvent, so as to obtain a first phase containing the Lewis acid and a second phase containing 1,4-bis(4-phenoxybenzoyl)benzene; subjecting at least the second phase to a solid/liquid separation step by centrifugal filtration, so as to recover solid 1,4-bis(4-phenoxybenzoyl)benzene.

    METHOD FOR IMPREGNATING REINFORCING FIBRES WITH POLYARYLETHERKETONES AND SEMI-FINISHED PRODUCTS OBTAINED IN THIS WAY

    公开(公告)号:US20200262989A1

    公开(公告)日:2020-08-20

    申请号:US16648180

    申请日:2018-09-13

    Applicant: Arkema France

    Abstract: A process for preparing a semifinished product comprising a PAEK-based resin and reinforcing fibers, including: preparing a dispersion comprising a PAEK-based resin in pulverulent form dispersed in an aqueous phase including at least one volatile organic compound and optionally a surfactant; bringing the reinforcing fibers into contact with said aqueous dispersion; drying the fibers impregnated with dispersion; and heating the impregnated fibers to a temperature sufficient for the melting of the resin, so as to form a semifinished product, wherein the aqueous phase of the dispersion has a dynamic viscosity, measured at 25° C. under a shear stress of 6.8 s−1 on a Brookfield DV2T Extra viscometer, is between 0.1 and 25 Pa·s; and wherein when the surfactant is present, its content is less than 1% by weight relative to the mass of dispersed resin.

    PEKK MANUFACTURING PROCESS
    16.
    发明申请

    公开(公告)号:US20250145763A1

    公开(公告)日:2025-05-08

    申请号:US18503546

    申请日:2023-11-07

    Applicant: ARKEMA FRANCE

    Abstract: The invention relates to a process for manufacturing a polyether ketone ketone, which involves placing in contact an aromatic ether which is diphenyl ether, 1,3-bis(4-phenoxybenzoyl)benzene, 1,4-bis(4-phenoxybenzoyl)benzene or a mixture thereof, an acyl chloride which is isophthaloyl chloride, terephthaloyl chloride, or a mixture thereof, a Lewis acid, and a first fraction s1 of a reaction solvent, so as to form a premix at a temperature T0 less than or equal to 25° C. and placing the premix formed at T0 in contact with a fraction s2 of the reaction solvent, the fraction s2 of reaction solvent being preheated, so as to form a reaction mixture heated to a temperature T1.

    ADDITIVE MANUFACTURING PROCESS BY EXTRUSION OF A POLY-ETHER-KETONE-KETONE BASED COMPOSITION

    公开(公告)号:US20240124738A1

    公开(公告)日:2024-04-18

    申请号:US18270257

    申请日:2021-12-23

    Applicant: ARKEMA FRANCE

    Abstract: The invention concerns an additive manufacturing process by extrusion for forming a three-dimensional part with an additive manufacturing machine comprising a nozzle, the process comprising:



    i) providing a pseudo-amorphous composition having a glass temperature Tg;
    ii) softening the composition at a softening temperature above Tg and below 300° C. to form a softened composition which is fluid enough to flow and, extruding the softened composition from the nozzle to form an extruded part section; and,
    iii) solidifying the extruded part section;


    wherein the composition is based on a homopolymer or a copolymer of poly-ether-ketone-ketone, consisting of: at least an isophthalic (I) repeating unit, having the formula:






    and, in the case of the copolymer, a terephthalic (T) repeating unit, having the formula:






    wherein the molar proportion of T units relative to the sum of the T and I units ranges from 0% to 45% or from 55% to 65%.

    METHOD FOR MANUFACTURING 1,4-BIS (4-PHENOXYBENZOYL)BENZENE USING SUBSTANTIALLY NON-HYDROLYZED TEREPHTHALOYL CHLORIDE

    公开(公告)号:US20200079717A1

    公开(公告)日:2020-03-12

    申请号:US16613587

    申请日:2018-05-16

    Applicant: Arkema France

    Abstract: A method for manufacturing 1,4-bis(4-phenoxybenzoyl)benzene, including: providing terephthaloyl chloride, diphenyl ether, a solvent and a Lewis acid, wherein the terephthaloyl chloride is of a purity grade such that, 10 minutes after introducing it at a reference concentration of 6.5 wt. % into said solvent, at a temperature of 20° C., a solution is obtained having a turbidity of less than 500 NTU; mixing the terephthaloyl chloride, the diphenyl ether and the solvent so as to make a reactant mixture; adding the Lewis acid to the reactant mixture so as to effect the reaction of the terephthaloyl chloride with the diphenyl ether; recovering a product mixture comprising a 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex.

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