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    METHOD FOR MANUFACTURING FLUOROPOLYMERS
    1.
    发明申请
    METHOD FOR MANUFACTURING FLUOROPOLYMERS 有权

    公开(公告)号：US20230002518A1

    公开(公告)日：2023-01-05

    申请号：US17784965

    申请日：2020-12-09

    Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.

    Inventor： Stefana Musio ,  Fiorenza D'aprile ,  Serena Carella ,  Valeriy Kapelyushko ,  Bradley Lane Kent ,  Alessio Marrani

    IPC: C08F14/24

    Abstract: The present invention relates to a process for preparing a fluoropolymer in a liquid reaction medium, comprising the following steps: provide a reactor containing a liquid reaction medium comprising water introduce in said reactor ethylene monomers and fluorinated monomers, said fluorinated monomers being selected from tetrafluoroethylene (TFE), chlorotrifluoroethylene (CTFE) or mixtures thereof, pressurize the reactor, initiate polymerization feeding into said reactor a redox initiator comprising an oxidising agent and a reducing agent, wherein said reducing agent in said redox couple initiator is free from sulphur atoms having an oxidation number of 4 or below, wherein the reaction medium is free of fluorinated surfactants.

    Process for manufacturing a dispersion of a vinylidene fluoride polymer
    3.
    发明授权
    Process for manufacturing a dispersion of a vinylidene fluoride polymer 有权

    公开(公告)号：US10766977B2

    公开(公告)日：2020-09-08

    申请号：US15890650

    申请日：2018-02-07

    Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.

    Inventor： Fabrizio Spada ,  Bradley Lane Kent

    IPC: C08F14/22

    Abstract: A process for manufacturing a dispersion of a vinylidene fluoride (VDF) thermoplastic polymer [polymer (F)], said process includes polymerizing VDF in an aqueous phase that includes: at least one surfactant selected from the group consisting of non-fluorinated surfactants [surfactant (HS)] and fluorinated surfactants having a molecular weight of less than 400 [surfactant (FS)]; and at least one functional (per)fluoropolyether (functional PFPE) comprising at least one (per)fluoropolyoxyalkylene chain [chain (R′F)] and at least one functional group, said functional PFPE having a number average molecular weight of at least 1000 and a solubility in water of less than 1% by weight at 25° C., wherein said functional PFPE is present in the aqueous phase in an amount of 0.001 to 0.3 g/l.

    PROCESS FOR MANUFACTURING A DISPERSION OF A VINYLIDENE FLUORIDE POLYMER
    4.
    发明申请
    PROCESS FOR MANUFACTURING A DISPERSION OF A VINYLIDENE FLUORIDE POLYMER 审中-公开

    公开(公告)号：US20180162965A1

    公开(公告)日：2018-06-14

    申请号：US15890650

    申请日：2018-02-07

    Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.

    Inventor： Fabrizio Spada ,  Bradley Lane Kent

    IPC: C08F14/22 ,  C08F2/16

    CPC classification number: C08F14/22 ,  C08F2/16

    Abstract: A process for manufacturing a dispersion of a vinylidene fluoride (VDF) thermoplastic polymer [polymer (F)], said process includes polymerizing VDF in an aqueous phase that includes: at least one surfactant selected from the group consisting of non-fluorinated surfactants [surfactant (HS)] and fluorinated surfactants having a molecular weight of less than 400 [surfactant (FS)]; and at least one functional (per)fluoropolyether (functional PFPE) comprising at least one (per)fluoropolyoxyalkylene chain [chain (R′F)] and at least one functional group, said functional PFPE having a number average molecular weight of at least 1000 and a solubility in water of less than 1% by weight at 25° C., wherein said functional PFPE is present in the aqueous phase in an amount of 0.001 to 0.3 g/l.

    FLUORINE-CONTAINING THERMOPLASTIC ELASTOMER COMPOSITION
    7.
    发明申请
    FLUORINE-CONTAINING THERMOPLASTIC ELASTOMER COMPOSITION 有权

    公开(公告)号：US20210071027A1

    公开(公告)日：2021-03-11

    申请号：US17103658

    申请日：2020-11-24

    Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.

    Inventor： Suneel Bandi ,  Kun Li ,  Philip Schild ,  Edwin Figueroa ,  Bradley Lane Kent

    IPC: C09D127/20 ,  C08L27/12 ,  H01B3/44 ,  C08F214/24 ,  H01B3/28 ,  C08F210/02 ,  C09D127/16

    Abstract: The invention pertains to a thermoplastic vulcanizate fluorine-containing composition [vulcanizate (C)], comprising a continuous thermoplastic fluoropolymer phase and a dispersed vulcanized fluoroelastomer phase, said composition comprising: -at least one thermoplastic, fluoropolymer [polymer (F)], said polymer (F) comprising (j) from 40 to 60% by moles of recurring units derived from ethylene (E); (jj) from 60 to 40% by moles of recurring units derived from at least one of chlorotrilluoroethylene (CTFE) and tetrafluoroethylene (TFE); and (jjj) from 0.5 to 10% by moles of recurring units derived from of at least one (per)fluoroalkylvinylether of formula CX2═CX—ORf, wherein each of X, equal to or different from each other, is independently H or F (preferably F); and Rf is a C1-C12 (per)fluoroalkyl group or a C1-C12 (per)fluoro-oxy-alkyl group comprising one or more than one catenary oxygen atoms [monomer (V)], with % by moles being referred to the total moles of recurring units of the polymer (F); and -at least one (per)fluoroelastomer [elastomer (A)].

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