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    Purification of alkylene carbonate
    2.
    发明授权
    Purification of alkylene carbonate 失效
    碳酸亚烷基酯的纯化

    公开(公告)号：US06586605B1

    公开(公告)日：2003-07-01

    申请号：US10339748

    申请日：2003-01-08

    申请人： Andrew P. Kahn

    发明人： Andrew P. Kahn

    IPC分类号： C07D31736

    CPC分类号： C07D317/36

    摘要： The invention is a method to purify an alkylene carbonate such as propylene carbonate by contact with at least two solid adsorbents comprising carbon and an inorganic silicon or aluminum oxide. The purification method successfully improves color and color stability while also reducing the amount of catalyst impurity contained in the alkylene carbonate.

    摘要翻译： 本发明是一种通过与包含碳和无机硅或氧化铝的至少两种固体吸附剂接触来纯化碳酸亚烃酯如碳酸亚丙酯的方法。 纯化方法成功地提高了颜色和颜色稳定性，同时还减少了碳酸亚烷基酯中所含的催化剂杂质的量。

    Acetal and hemiacetal ester linked propylene carbonate functional (meth)acrylic esters and method of making same
    4.
    发明授权
    Acetal and hemiacetal ester linked propylene carbonate functional (meth)acrylic esters and method of making same 失效
    乙缩醛和半缩醛酯连接的丙烯碳酸酯官能（甲基）丙烯酸酯及其制备方法

    公开(公告)号：US06627762B1

    公开(公告)日：2003-09-30

    申请号：US10277988

    申请日：2002-10-23

    申请人： John G. Woods ,  Susanne D. Morrill

    发明人： John G. Woods ,  Susanne D. Morrill

    IPC分类号： C07D31736

    CPC分类号： C08F220/28 ,  C07D317/36 ,  C08F216/1416

    摘要： Compounds of the formula: wherein R1 is H or methyl, R2 is H or alkyl, R3 is C2-C4 alkylene, n is 0-4, n′ is 1-4, x is one or more, y is one or more, x+y=z, and A is a z-valent organic group linked to the group or groups on the left thereof through a carbon atom and is linked to the group or groups on the right thereof through an ether or ester oxygen atom, or, provided that x and y are both 1, a direct bond.

    摘要翻译： 下式的化合物：其中R 1是H或甲基，R 2是H或烷基，R 3是C 2 -C 4亚烷基，n是0-4，n'是1-4，x是1或 更多的是，y是一个或多个，x + y = z，A是通过碳原子与其左侧的基团连接的z价有机基团，并且通过碳原子连接到其右侧的基团 醚或酯氧原子，或者如果x和y均为1，则直接键合。