FLUOROPOLYMER COMPOSITION
    1.
    发明申请

    公开(公告)号:WO2022048938A1

    公开(公告)日:2022-03-10

    申请号:PCT/EP2021/073297

    申请日:2021-08-23

    Abstract: The invention pertains to a thermoplastic fluoropolymer composition comprising one or more polymer A comprising recurring units derived from ethylene and recurring units derived from halogenated monomers selected from chlorotrifluoroethylene (CTFE) and tetrafluoroethylene (TFE) and one or more polymer B comprising recurring units derived from ethylene, recurring units derived from halogenated monomers selected from CTFE and TFE, and recurring units derived from hexafluoroisobutylene (HFIB) and/or perfluoropropylvinylether (PPVE). The resulting composition allows to manufacture films having exceptional transparency and good mechanical properties which can be used for examples as architectural films.

    TETRAFLUOROETHYLENE COPOLYMERS
    2.
    发明申请
    TETRAFLUOROETHYLENE COPOLYMERS 审中-公开
    四氢氟乙烯共聚物

    公开(公告)号:WO2013189826A1

    公开(公告)日:2013-12-27

    申请号:PCT/EP2013/062257

    申请日:2013-06-13

    CPC classification number: C08K5/1565 C08F14/26 C08F214/26 C08F2/24

    Abstract: The invention pertains to a tetrafluoroethylene (TFE) copolymer comprising recurring units derived from at least one per(halo)fluoroolefin different from TFE [monomer (F)] [monomer (F)], in an amount of 0.005 to 0.250 % moles, with respect to the total moles of the copolymer, wherein a particular relation between monomer content and amorphous index is satisfied, and to a process for its manufacture by emulsion polymerization in the presence of certain cyclic surfactants.

    Abstract translation: 本发明涉及包含衍生自至少一种不同于TFE [单体(F)] [单体(F)]的(卤代)氟烯烃的重复单元的四氟乙烯(TFE)共聚物,其量为0.005-0.250摩尔%,与 相对于共聚物的总摩尔数,其中满足单体含量和无定形指数之间的特定关系,以及在某些环状表面活性剂存在下通过乳液聚合制造的方法。

    METHOD OF MAKING FLUOROPOLYMER DISPERSION
    3.
    发明申请
    METHOD OF MAKING FLUOROPOLYMER DISPERSION 审中-公开
    制备氟聚合物分散体的方法

    公开(公告)号:WO2016050776A1

    公开(公告)日:2016-04-07

    申请号:PCT/EP2015/072441

    申请日:2015-09-29

    CPC classification number: C08L27/18 C08F14/26 C08K5/095 C08L71/02 C09D127/18

    Abstract: The invention pertains to a method for making a fluoropolymer dispersion, said method comprising an aqueous emulsion polymerization of one or more fluorinated monomers wherein said aqueous emulsion polymerization is carried out in an aqueous medium comprising a surfactant mixture [mixture (S)] comprising: at least one perfluorohexanoic acid or salt thereof [surfactant (C6)], in an amount of 1 to 5 g/I, with respect to said aqueous medium; and at least one linear bifunctional perfluoropolyether surfactant [surfactant (PFPE)] complying with formula (I) here below: XpOOC-CF 2 -0-(CF 2 0) n' (CF 2 CF 2 0) m' -CF 2 -COOXp (I) wherein: Xp, equal to or different from each other, is a hydrogen atom, a monovalent metal, preferably an alkaline metal, or an ammonium group of formula -N(R' n ) 4 , wherein R' n , equal or different at each occurrence, is a hydrogen atom or a C 1 -C 6 hydrocarbon group, preferably an alkyl group; n' and m' are independently integers > 0 such that the number average molecular weight of the surfactant (PFPE) is of 500 to 2500, said surfactant (PFPE) being used in an amount of 0.005 to 0.5 g/I, with respect to said aqueous medium.

    Abstract translation: 本发明涉及一种制备含氟聚合物分散体的方法,所述方法包括一种或多种氟化单体的水乳液聚合,其中所述水性乳液聚合在包含表面活性剂混合物(混合物(S))的水性介质中进行,所述表面活性剂混合物 至少一种全氟己酸或其盐[表面活性剂(C6)],相对于所述水性介质为1至5g / l; 和XpOOC-CF 2-0-(CF 20)n'(CF 2CF 20)m'-CF 2 -COOPp(I)的至少一种线性双功能全氟聚醚表面活性剂[表面活性剂(PFPE)] )其中:Xp彼此相同或不同,是氢原子,一价金属,优选碱金属或式-N(R'n)4的铵基,其中R'n相同或不同 是氢原子或C 1 -C 6烃基,优选烷基; n'和m'独立地为整数> 0,使得表面活性剂(PFPE)的数均分子量为500至2500,所述表面活性剂(PFPE)的用量为0.005至0.5g / l,相对于 所述水性介质。

    METHOD FOR MANUFACTURING FLUOROPOLYMERS
    4.
    发明申请

    公开(公告)号:WO2021116222A1

    公开(公告)日:2021-06-17

    申请号:PCT/EP2020/085365

    申请日:2020-12-09

    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.

    TETRAFLUOROETHYLENE COPOLYMERS
    6.
    发明申请
    TETRAFLUOROETHYLENE COPOLYMERS 审中-公开
    四氢氟乙烯共聚物

    公开(公告)号:WO2013189824A1

    公开(公告)日:2013-12-27

    申请号:PCT/EP2013/062246

    申请日:2013-06-13

    CPC classification number: C08F14/26 C08F214/262 C08F2/24

    Abstract: The invention pertains to a tetrafluoroethylene (TFE) copolymer comprising recurring units derived from at least one perfluoroalkyl(oxy)vinylether of formula CF 2 =CF-O-R f , wherein R f is a C 1 -C 6 perfluoroalkyl radical possibly comprising one or more ethereal oxygen atoms [monomer (F)], in an amount of 0.005 to 0.025 % moles, with respect to the total moles of the copolymer, wherein a particular relation between monomer content and amorphous index is satisfied, and to a process for its manufacture by emulsion polymerization in the presence of certain cyclic surfactants.

    Abstract translation: 本发明涉及包含衍生自式CF2 = CF-O-Rf的至少一种全氟烷基(氧)乙烯基醚的重复单元的四氟乙烯(TFE)共聚物,其中Rf是可能包含一个或多个醚氧原子的C 1 -C 6全氟烷基 相对于共聚物的总摩尔数为0.005〜0.025摩尔%的[单体(F)],其中满足单体含量与无定形指数之间的特定关系,以及其通过乳液聚合制造方法 在某些环状表面活性剂的存在下。

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