Fluorinated cation exchange membrane and use thereof in electrolysis of
an alkali metal halide
    1.
    发明授权
    Fluorinated cation exchange membrane and use thereof in electrolysis of an alkali metal halide 失效
    氟化阳离子交换膜及其在碱金属卤化物电解中的应用

    公开(公告)号:US4508603A

    公开(公告)日:1985-04-02

    申请号:US957453

    申请日:1978-11-03

    IPC分类号: C08J5/22 C25B1/34 C25B13/08

    CPC分类号: C08J5/2237 C08J2327/12

    摘要: A fluorinated cation exchange membrane is formed using a copolymer of a fluorovinyl ether (I) having the formulaCF.sub.2 .dbd.CF--O--CF.sub.2 --CFXOCF.sub.2).sub.l (CFX').sub.m (CF OCFX").sub.n Awherein l is 0 to 3; m is 2 to 6; n is 0 to 4 and one of l and n is not zero and l+m+n.gtoreq.3; X, X' and X" are the same or different and each respectively represent --F or --CF.sub.3 ; A represents --CN,--COF, --COOH, --COOR,--COOM or --CONR.sub.2 R.sub.3 ; R.sub.1 represents a C.sub.1-10 alkyl group; and M represents an alkali metal or a quaternary ammonium salt; and a fluorinated olefin (II), or a hydrolyzed copolymer thereof. The fluorinated cation exchange membrane is used for production of a halogen and an alkali metal hydroxide by electrolysis of an alkali metal hydride.

    摘要翻译: 使用式CF2 = CF-O-CF2-CFXOCF2)l(CFX')m(CFOCFX“)nA的氟代乙烯基醚(I)的共聚物,其中I为0至3,形成氟化阳离子交换膜; m为2〜6; n为0〜4,l和n之一不为零,l + m + n> / = 3; X,X'和X“相同或不同,分别表示-F或-CF 3; A表示-CN,-COF,-COOH,-COOR,-COOM或-CONR2R3; R1表示C1-10烷基; M表示碱金属或季铵盐; 和氟化烯烃(II)或其水解共聚物。 氟化阳离子交换膜用于通过电解碱金属氢化物制造卤素和碱金属氢氧化物。

    Process for preparing organic dispersion of acid type fluorinated polymer
    2.
    发明授权
    Process for preparing organic dispersion of acid type fluorinated polymer 失效
    制备酸型氟化聚合物有机分散体的方法

    公开(公告)号:US4341685A

    公开(公告)日:1982-07-27

    申请号:US203391

    申请日:1980-11-03

    IPC分类号: C08J3/09 C08J5/22 C08K5/02

    摘要: An organic dispersion is prepared of an acid type fluorinated polymer comprises copolymerizing a fluorinated ethylenically unsaturated monomer and a functional monomer having an acid type functional group in an aqueous medium under an action of a polymerization initiator source to obtain an aqueous dispersion of an acid type fluorinated polymer having the functional monomer unit content of 5 to 40 mol %; and replacing an aqueous medium of the aqueous dispersion to a hydrophilic organic medium under maintaining the dispersion.

    摘要翻译: 制备酸型氟化聚合物的有机分散体,其包括在聚合引发剂源的作用下在水性介质中共聚氟化烯键式不饱和单体和具有酸型官能团的官能单体以获得酸式氟化的水性分散体 功能单体单元含量为5〜40摩尔%的聚合物; 并在保持分散体的情况下将水性分散体的水性介质替换为亲水性有机介质。

    Process for producing modified polytetrafluoroethylene
    3.
    发明授权
    Process for producing modified polytetrafluoroethylene 失效
    生产改性聚四氟乙烯的方法

    公开(公告)号:US4326046A

    公开(公告)日:1982-04-20

    申请号:US203505

    申请日:1980-11-03

    CPC分类号: C08F259/08 Y10S525/902

    摘要: A modified polytetrafluoroethylene is produced by polymerizing tetrafluoroethylene in an aqueous medium containing a dispersing agent with a polymerization initiator source and then, copolymerizing tetrafluoroethylene and a fluorinated monomer having an acid type functional group as a copolymerizable modifier in the presence of the resulting polytetrafluoroethylene to obtain a modified polytetrafluoroethylene having the modifier component of 0.001 to 10 mol %.

    摘要翻译: 通过在含有聚合引发剂源的分散剂的水性介质中聚合四氟乙烯,然后在得到的聚四氟乙烯的存在下共聚四氟乙烯和具有酸型官能团的氟化单体作为共聚改性剂来制备改性聚四氟乙烯,得到 改性聚四氟乙烯的改性成分为0.001〜10摩尔%。

    Method of regenerating electrochemical properties of cation exchange
membrane of fluorinated polymer
    5.
    发明授权
    Method of regenerating electrochemical properties of cation exchange membrane of fluorinated polymer 失效
    氟化聚合物阳离子交换膜再生电化学性能的方法

    公开(公告)号:US4115240A

    公开(公告)日:1978-09-19

    申请号:US847909

    申请日:1977-11-02

    摘要: Electrochemical properties of a cation exchange membrane of a carboxylic acid type fluorinated polymer which is used for an electrolysis of an aqueous solution of an alkali metal chloride is recovered by converting ion exchange groups of --COO).sub.m M; wherein M represents an alkali metal or an alkaline earth metal; and m represents a valence of M; to the corresponding acid or ester groups of --COOR wherein R represents hydrogen or a C.sub.1 - C.sub.5 alkyl group and heat-treating the fluorinated polymer having the groups of --COOR.

    摘要翻译: 用于电解碱金属氯化物水溶液的羧酸型氟化聚合物的阳离子交换膜的电化学性质通过转换-COO)mM的离子交换基团来回收; 其中M表示碱金属或碱土金属; m表示M的化合价; 到相应的-COOR的酸或酯基,其中R表示氢或C1-C5烷基,并且对具有-COOR基团的氟化聚合物进行热处理。

    Method of installation of membrane to electrolytic cell
    6.
    发明授权
    Method of installation of membrane to electrolytic cell 失效
    将膜安装到电解槽的方法

    公开(公告)号:US4686026A

    公开(公告)日:1987-08-11

    申请号:US543805

    申请日:1983-10-24

    CPC分类号: C08J5/225 C08J2327/12

    摘要: A cation exchange membrane is installed to an electrolytic cell to be used in a form of a cation exchange membrane of a fluorinated polymer having ion exchange groups having the formula--(COO).sub.m Xwherein X represents an alkali metal atom or --NRR' and R and R' respectively represent hydrogen atom or a lower alkyl group; and m represents a valence of m, by covering a membrane of a fluorinated polymer having ion exchange groups having the formula--COOLwherein L represents hydrogen atom or a C.sub.1 -C.sub.20 alkyl group on said electrode in the installation.

    摘要翻译: 将阳离子交换膜安装在电解槽中,以电解池的形式使用具有式 - (COO)m X的离子交换基团的氟化聚合物的阳离子交换膜,其中X表示碱金属原子或-NRR',R 和R'分别表示氢原子或低级烷基; m表示m的化合价,通过在该装置中覆盖所述电极上具有式-COOL的离子交换基的氟化聚合物的膜,其中L表示氢原子或C1-C20烷基。

    Process for producing fluorinated polymer having ion-exchange groups
    7.
    发明授权
    Process for producing fluorinated polymer having ion-exchange groups 失效
    制备具有离子交换基团的氟化聚合物的方法

    公开(公告)号:US4320205A

    公开(公告)日:1982-03-16

    申请号:US183165

    申请日:1980-09-02

    CPC分类号: C08F214/184 B01J39/20

    摘要: A fluorinated copolymer having ion-exchange group is produced by copolymerizing a fluorinated ethylenic unsaturated monomer and a functional monomer having a functional group of carboxylic acid group or a group which can be converted to carboxylic acid group in an aqueous medium in the presence of a polymerization initiator source and in the presence of a specific molecular weight regulator. The specific molecular weight regulator is selected from the group consisting of aliphatic alkanes alicyclic alkanes and water soluble organic solvents and controls the molecular weight without lowering the copolymerization velocity and without lowering the stability of the aqueous latex.

    摘要翻译: 具有离子交换基团的氟化共聚物是通过使氟化烯属不饱和单体和具有羧酸基官能团的官能单体或能够在水性介质中转化为羧酸基团的官能单体在聚合反应 引发剂源和在特定分子量调节剂存在下。 特定的分子量调节剂选自脂族烷烃脂环族烷烃和水溶性有机溶剂,并且控制分子量而不降低共聚速度并且不降低水性胶乳的稳定性。

    Electrolytic cell
    8.
    发明授权
    Electrolytic cell 失效
    电解池

    公开(公告)号:US4537673A

    公开(公告)日:1985-08-27

    申请号:US397177

    申请日:1982-07-12

    IPC分类号: C25B9/00 C25B13/02

    CPC分类号: C25B13/02 C25B9/00

    摘要: An electrolytic cell comprises intercalated finger-shaped electrodes each disposed through a cation exchange membrane, in which said cation exchange membrane constitutes a cylinder or envelope enclosing a finger-shaped anode or cathode A flare is formed at one end or each end of the cylinder or at the open end of the envelope. The flare is joined with a flange to form a unitary cation exchange membrane-flange structure which liquid-tightly divides an anode compartment and a cathode compartment.

    摘要翻译: 电解池包括插入的指形电极,每个电极均设置在阳离子交换膜上,其中所述阳离子交换膜构成包围指状阳极或阴极的圆筒或封套。在圆筒的一端或两端形成有火炬,或 在信封的开放端。 喇叭口与法兰连接以形成一个整体的阳离子交换膜法兰结构,它将液体密封地分隔阳极室和阴极室。

    Process for producing fluorinated polymer having ion-exchange groups
    10.
    发明授权
    Process for producing fluorinated polymer having ion-exchange groups 失效
    制备具有离子交换基团的氟化聚合物的方法

    公开(公告)号:US4298699A

    公开(公告)日:1981-11-03

    申请号:US119521

    申请日:1980-02-07

    IPC分类号: C08F214/18 B01J39/20

    CPC分类号: C08F214/184

    摘要: A fluorinated copolymer having ion-exchange group is produced by copolymerizing a fluorinated ethylenic unsaturated monomer and a functional monomer having a functional group of carboxylic acid group or a group which can be converted to carboxylic acid group in an aqueous medium in the presence of a polymerization initiator source. The fluorinated copolymer obtained by the copolymerization is treated with an alcohol at higher than 20.degree. C. in the form of particles before a molding. The melt flowability of the fluorinated copolymer is improved.

    摘要翻译: 具有离子交换基团的氟化共聚物是通过使氟化烯属不饱和单体和具有羧酸基官能团的官能单体或能够在水性介质中转化为羧酸基团的官能单体在聚合反应 启动源。 通过共聚获得的含氟共聚物在成型前以高于20℃的醇以颗粒的形式进行处理。 氟化共聚物的熔体流动性提高。