Process for the preparation of fluorinated carboxylic acid fluorides
    114.
    发明授权
    Process for the preparation of fluorinated carboxylic acid fluorides 失效
    制备氟化羧酸氟化物的方法

    公开(公告)号:US4985594A

    公开(公告)日:1991-01-15

    申请号:US389271

    申请日:1989-08-03

    CPC分类号: C07C51/58

    摘要: Process for the preparation of fluorinated carboxylic acid fluoridesFluorinated carboxylic acid fluorides of the Formula I ##STR1## can be prepared from fluorinated vinyl ethers of the Formula II ##STR2## by heating the vinyl ethers to a temperature of 100.degree. to 350.degree. C.Perfluorinated carboxylic acids and derivatives thereof can be prepared from the carboxylic acid fluorides by secondary reactions, for example hydrolysis, esterification or aminolysis.

    摘要翻译: 氟化氟化物的制备方法式I的氟化羧酸氟化物可以通过将乙烯基醚加热至100℃,由式II的氟化乙烯基醚制备(II) 全氟羧酸及其衍生物可以通过二次反应由羧酸氟化物制备,例如水解,酯化或氨解。

    Process for manufacturing clean fluoropolymers
    120.
    发明授权
    Process for manufacturing clean fluoropolymers 有权
    制造清洁含氟聚合物的方法

    公开(公告)号:US08541499B2

    公开(公告)日:2013-09-24

    申请号:US12682702

    申请日:2008-10-10

    IPC分类号: C08L27/18

    摘要: There is provided a fluoroelastomer characterized by containing one type or more types of fluorinated emulsifiers represented by the formula: F—(CF2)t-[O(CF2)n]m-O—(CHF)o-(CF2)p-X where m=0 to 3; n=1 to 5; o=0 to 1; p=1 to 3; t=1 to 10; and where when t=2 than o≠0; and further where X is selected from a group consisting of a carboxyl acid group and a salt of a carboxylic acid group. A method for preparing fluoroelastomers by using such fluorinated emulsifiers in emulsion polymerization of fluoromonomers and articles containing such fluoroelastomers are also provided. A fluorinated elastomer dispersion including an aqueous mixture of a crosslinkable fluorinated elastomer and such fluorinated emulsifiers are also provided. The fluoroelastomers created with such fluorinated emulsifiers are essentially free of cations other than NH4+ and H+ and have a low glass transition temperature.

    摘要翻译: 提供一种含氟弹性体,其特征在于含有一种或多种由式F-(CF 2)t- [O(CF 2)n] m O - (CHF)o - (CF 2)p X表示的氟化乳化剂,其中m = 0 到3; n = 1〜5; o = 0至1; p = 1〜3; t = 1〜10; 并且当t = 2时,o <0; 并且进一步其中X选自羧酸基团和羧酸基团的盐。 还提供了通过使用这种氟化乳化剂在含氟单体和含有这些含氟弹性体的制品的乳液聚合中制备含氟弹性体的方法。 还提供了包含可交联氟化弹性体和这种氟化乳化剂的水性混合物的含氟弹性体分散体。 用这种氟化乳化剂生产的含氟弹性体基本上不含NH 4+和H +以外的阳离子,并具有低的玻璃化转变温度。