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    Alkyl perfluoro(2-methyl-5-oxo-3-oxahexanoates) and derivatives thereof
    6.
    发明公开
    Alkyl perfluoro(2-methyl-5-oxo-3-oxahexanoates) and derivatives thereof 失效
    烷基全氟（2-甲基-5-氧代-3-氧代己酸）和衍生物。

    公开(公告)号：EP0062120A1

    公开(公告)日：1982-10-13

    申请号：EP81301471.9

    申请日：1981-04-03

    申请人： E.I. DU PONT DE NEMOURS AND COMPANY

    发明人： Krespan, Carl George

    IPC分类号： C07C69/708 ,  C07C43/17 ,  C08F216/18

    CPC分类号： C07D319/12

    摘要： An alkyl perfluoroketoester of the formula
    may be used in the preparation of acyl fluorides of the formula
    vinyl ethers of the formula
    divinyl ethers of the formula
    and allyl ethers of the formula
    [In these formulae n is 0 to 6, p is 0 to 7, X is CO 2 M, CO 2 R, C0 2 H, CONH 2 , COF, COCI or CN, M is alkali metal, ammonium or quaternary ammonium and R is C 1-8 alkyl.] Film-forming copolymers, useful as molding resins, can be derived from the vinyl ethers and a fluorinated vinyl monomer, for example, tetrafluoroethylene.
    ion-exchange copolymers of the vinyl ethers and allyl ethers are useful as the membrane in a chloroalkali electrolysis cell.

    摘要翻译： 式...的酰基氟化物可以用于下式的酰基氟化物：式CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 式中的醚... <在这些式中，n为0至6，p为0至7，X为CO 2 M，CO 2 R，CO 2 H，CONH 2，COF，COCl或CN，M为碱金属，铵或季铵 R是C 1-8烷基。]可用作模塑树脂的成膜共聚物可以衍生自乙烯基醚和氟化乙烯基单体，例如四氟乙烯。 乙烯基醚和烯丙基醚的离子交换共聚物可用作氯碱电解槽中的膜。

    CONTINUOUS, SOLVENT-FREE PROCESS FOR MAKING COPOLYMERS OF MALEIC ANHYDRIDE AND C 1-4? ALKYL VINYL ETHER
    10.
    发明公开
    CONTINUOUS, SOLVENT-FREE PROCESS FOR MAKING COPOLYMERS OF MALEIC ANHYDRIDE AND C 1-4? ALKYL VINYL ETHER 有权
    用于生产马来酸酐和C1-4的共聚物连续无溶剂法制？ 烷基乙烯基醚

    公开(公告)号：EP1299425A4

    公开(公告)日：2004-10-27

    申请号：EP01930999

    申请日：2001-05-02

    申请人： ISP INVESTMENTS INC

    发明人： BISS RUSSELL ,  COHEN JEFFREY DR ,  ZAMORA JOHN ,  PLOCHOCKA KRYSTYNA ,  LYNN JEFFREY A

    IPC分类号： C08F2/00 ,  C08F2/02 ,  C08F6/00 ,  C08F216/18 ,  C08F222/06 ,  C08F222/04

    CPC分类号： C08F222/06 ,  C08F2/02 ,  C08F216/18 ,  Y02P20/582

    摘要： A continuous, solvent-free process for obtaining solvent-free, fine white powders of high molecular weight alternating copolymers of maleic anhydride and a C1-C4 alkyl vinyl ether, without odor or taste, having the molecular structure (A-B)n, where A is maleic anhydride, B is an alkyl vinyl ether and n is an integer indicative of the molecular weight of the copolymer, which comprises feeding alkyl vinyl ether as reactant and solvent in excess over the desired 1:1 mole ratio of A:B in the copolymer, molten maleic anhydride and a free radical initiator, continuously at predetermined feeding rates into a reactor heated at a reaction temperature of about 50 DEG to 100 DEG C, holding the reactants in the reactor for a predetermined average residence time, withdrawing reaction product, residual alkyl vinyl ether and initiator at the same rate as the feed rate of reactants into the reactor, stripping residual alkyl vinyl ether from the reaction product, drying the copolymer obtained of any remaining traces of alkyl vinyl ether, and recycling recovered alkyl vinyl ether back into reactor as reactant and solvent.