Halogen-containing polyacrylate derivatives
    2.
    发明授权
    Halogen-containing polyacrylate derivatives 失效
    含卤素的聚丙烯酸酯衍生物

    公开(公告)号:US4752635A

    公开(公告)日:1988-06-21

    申请号:US946055

    申请日:1986-12-24

    CPC分类号: G03F7/039 C08F20/22

    摘要: A halogen-containing polyacrylate derivative having the formula: ##STR1## wherein A is a structural unit derived from a copolymerizable monomer having a double bond; R is ##STR2## wherein each of R.sub.1 and R.sub.2 is a hydrogen atom or a fluorinated methyl group, provided R.sub.1 and R.sub.2 are not hydrogen atoms at the same time, and R.sub.3 is a hydrogen atom or a lower alkyl group; X is a halogen atom or a methyl group; and m is a positive integer, n is 0 or a positive integer, and n/m is from 0 to 2, preferably from 0 to 1.

    摘要翻译: 具有下式的含卤素聚丙烯酸酯衍生物:其中A是衍生自具有双键的可共聚单体的结构单元; R为,其中R1和R2各自为氢原子或氟化甲基,其中R1和R2不同时为氢原子,R3为氢原子或低级烷基; X是卤素原子或甲基; m为正整数,n为0或正整数,n / m为0〜2,优选为0〜1。

    Method of producing cation-exchange membrane having roughed surface
    3.
    发明授权
    Method of producing cation-exchange membrane having roughed surface 失效
    生产具有粗糙表面的阳离子交换膜的方法

    公开(公告)号:US4537910A

    公开(公告)日:1985-08-27

    申请号:US550338

    申请日:1983-11-09

    IPC分类号: C08J5/22

    CPC分类号: C08J5/2231 C08J2327/18

    摘要: A method of producing a cation-exchange membrane having roughed surface which is characterized in mixing silica powder with water to give a suspended or pasty mixture, supporting the resultant mixture on art paper or filter paper, drying the mixture to form silica powder layer, adhering with heating and pressing the silica powder layer on surface of membrane composed of perfluorocarbon polymer, and removing the silica powder layer formed on the surface of said membrane with caustic alkali aqueous solution.

    摘要翻译: 一种生产具有粗糙表面的阳离子交换膜的方法,其特征在于将二氧化硅粉末与水混合以得到悬浮或糊状混合物,将所得混合物支撑在艺术纸或滤纸上,干燥混合物以形成二氧化硅粉末层,粘附 通过在由全氟化碳聚合物构成的膜的表面上加热压制二氧化硅粉末层,并用苛性碱水溶液除去形成在所述膜表面上的二氧化硅粉末层。

    Process for producing fluorine-containing aliphatic carboxylic acids
    4.
    发明授权
    Process for producing fluorine-containing aliphatic carboxylic acids 失效
    含氟脂肪族羧酸的制造方法

    公开(公告)号:US5004567A

    公开(公告)日:1991-04-02

    申请号:US222302

    申请日:1988-07-22

    IPC分类号: C07C51/15

    CPC分类号: C07C51/15

    摘要: Process for producing fluorine-containing aliphatic carboxylic acids having the general formula of Y--R.sub.f --Y' as defined herein by reaction of fluorine-containing aliphatic halogen compounds having the general formula of X--R.sub.4 --X' as defined herein with carbon dioxide under the presence of zinc in an organic solvent and hydrolysis of the reaction product, wherein the improvement comprises controlling the concentration of carbon dioxide in the organic solvent at a level of 0.3 to 5 mol/l.

    摘要翻译: 通过如本文定义的具有通式X-R4-X'的含氟脂族卤素化合物与二氧化碳的反应生成具有通式Y-Rf-Y'的含氟脂族羧酸的方法, 锌在有机溶剂中的存在和反应产物的水解,其中改进包括控制有机溶剂中二氧化碳的浓度为0.3-5mol / l。

    Method for preparation of .alpha., .beta.-unsaturated carboxylic acid
containing fluorine
    5.
    发明授权
    Method for preparation of .alpha., .beta.-unsaturated carboxylic acid containing fluorine 失效
    (ALPHA),(β) - 饱和羧酸含氟化合物的制备方法

    公开(公告)号:US5124082A

    公开(公告)日:1992-06-23

    申请号:US71831

    申请日:1987-07-10

    CPC分类号: C07C51/15

    摘要: A method for preparing .alpha., .beta.-unsaturated carboxylic acids of the formulaR.sub.1 (R.sub.2)C.dbd.C(R.sub.3)CO.sub.2 Hwhere R.sub.1 to R.sub.3 can be hydrogen, fluorine, alkyl, or alkyl containing fluorine, but at least one of R.sub.1 to R.sub.3 is fluorine or alkyl containing fluorine. The method involves reacting an alkenyl halide containing fluorine having the general formulaR.sub.1 (R.sub.2)C.dbd.C(R.sub.3)Xwhere R.sub.1 to R.sub.3 are the same as above, and X is chlorine, bromine, or iodine with carbon dioxide in an aprotic polar organic solvent and in the presence of activated zinc. The activated zinc is activated by pretreatment with a mineral acid or acetic acid. At least one cation is present during the reaction which is an alkali metal ion, alkaline earth metal ion or ammonium ion. The cation is present in an amount of 0.01 to 50 gram atoms per one mol of alkenyl halide containig fluorine. The resulting product is hydrolyzed.