Preparation of poloxy-alkylene glycols
    3.
    发明授权
    Preparation of poloxy-alkylene glycols 失效
    烷氧基 - 亚烷基二醇的制备

    公开(公告)号:US5416240A

    公开(公告)日:1995-05-16

    申请号:US24903

    申请日:1993-03-02

    CPC分类号: C08G65/20

    摘要: Polyoxyalkylene glycols are prepared by a process in which tetrahydrofuran is polymerized with a total of not more than 95 mol %, based on the amount of tetrahydrofuran used, of one or more comonomers from the group consisting of the cyclic ethers and acetals in the absence of water and in the presence of a monohydric alcohol or of a monocarboxylic acid with the aid of an anhydrous heteropoly acid catalyst, and the polyoxyalkylene glycol is liberated from the resulting polyoxyalkylene glycol monoethers or polyoxyalkylene glycol monoesters by cleavage of the monoether or monoester bond.

    摘要翻译: 聚氧亚烷基二醇通过以下方法制备,其中四氢呋喃基于所用四氢呋喃的总量不超过95摩尔%,在不存在共聚单体的情况下聚合来自由环醚和缩醛组成的组中的一种或多种共聚单体 水和一元醇或单羧酸存在下,借助于无水杂多酸催化剂,通过裂解单醚或单酯键,从所得聚氧亚烷基二醇单醚或聚氧亚烷基二醇单酯中释放出聚氧亚烷基二醇。

    Preparation of N-substituted lactams
    10.
    发明授权
    Preparation of N-substituted lactams 失效
    N-取代的内酰胺的制备

    公开(公告)号:US5276165A

    公开(公告)日:1994-01-04

    申请号:US982300

    申请日:1992-11-25

    摘要: A process for the preparation of N-substituted lactams of the formula I ##STR1## where Z is C.sub.2 - to C.sub.10 -alkylene, C.sub.7 - to C.sub.12 -aralkylene, phenylene or naphthylene, andR.sup.1 is C.sub.1 - to C.sub.20 -alkyl, C.sub.6 - to C.sub.10 -aryl or C.sub.7 - to C.sub.12 -aralkyl,by hydrogenating a compound of the formula II ##STR2## where W is C.sub.2 - to C.sub.10 -alkylene, C.sub.2 - to C.sub.10 -alkenylene, C.sub.7 - to C.sub.12 -aralkylene, phenylene or naphthylene, andX and Y together form an oxa or imido bridge of the formula ##STR3## or alternatively are identical or different and are hydroxyl, C.sub.1 - to C.sub.20 -alkoxy, C.sub.6 - to C.sub.10 -aryloxy or C.sub.7 - to C.sub.12 -aralkoxy, and, if X and Y are different, Y, in addition to the abovementioned meanings, may also be hydrogen,at superatmospheric pressure and at elevated temperature in the presence of a catalyst and in the presence of an amine, which comprises using a secondary and/or tertiary amine of the formula IIINH.sub.n R.sub.3-n .sup.1where R.sup.1 is as defined above and n is 0 or 1, or a mixture of a secondary and/or teritary amine of this type with a primary amine of the formula IVR.sup.1 --NH.sub.2 (IV)as the starting material, and carrying out the reaction with addition of water and/or ammonia.

    摘要翻译: 制备式I的N-取代的内酰胺的方法(I)其中Z为C 2至C 10亚烷基,C 7至C 12 - 亚芳基,亚苯基或亚萘基,R 1为C 1 -C 20烷基 C 6 -C 10 - 芳基或C 7 - 至C 12 - 芳烷基,其中W是C 2 - 至C 10 - 亚烷基,C 2至C 10亚烯基,C 7 - 至C 12 - 亚烷基, - 亚烷基,亚苯基或亚萘基,X和Y一起形成下式的氧杂或亚氨基桥,或者可选地相同或不同,为羟基,C 1至C 20 - 烷氧基,C 6至C 10 - 芳氧基或C 7 - 对于C 12 - 芳烷氧基,并且如果X和Y不同,除了上述含义之外,Y还可以是氢,在超大气压和升高的温度下,在催化剂的存在下和在胺的存在下, 包括使用式III NH n R 3-n 1的仲和/或叔胺,其中R 1如上定义并且n为0或1,或者该仲胺和/或叔胺的混合物 以式ⅣR-NH2(Ⅳ)的伯胺为起始原料,并加入水和/或氨进行反应。