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19 条记录 (耗时 0.02 秒)

    UV-crosslinkable copolymers
    9.
    发明授权
    UV-crosslinkable copolymers 失效
    紫外线交联共聚物

    公开(公告)号：US5294688A

    公开(公告)日：1994-03-15

    申请号：US974818

    申请日：1992-11-16

    申请人： Gerd Rehmer ,  Gerhard Auchter ,  Andreas Boettcher ,  Lothar Franz ,  Helmut Jaeger

    发明人： Gerd Rehmer ,  Gerhard Auchter ,  Andreas Boettcher ,  Lothar Franz ,  Helmut Jaeger

    IPC分类号： C08F2/04 ,  C08F224/00 ,  C08F226/06 ,  C08F228/06 ,  C08F246/00 ,  C08J3/28

    CPC分类号： C08F226/06 ,  C08F224/00 ,  C08F228/06 ,  C08F246/00 ,  Y10S522/904 ,  Y10S522/905

    摘要： The invention relates to UV-crosslinkable copolymers built up fromA) from 99.5 to 75% by weight of olefinically unsaturated monomers,B) from 0.5 to 25% by weight of unsaturated compounds of the formula I ##STR1## and C) from 0.01 to 10% by weight of copolymerizable, olefinically unsaturated acetophenone and/or benzophenone derivatives containing no phenyl group having a free hydroxyl group in the ortho-position to the carbonyl group, whereX is O, S or NR.sup.1 andR is unsubstituted or substituted C.sub.2 - to C.sub.6 -alkylene, andR.sup.1 is C.sub.1 - to C.sub.8 -alkyl or phenyl.The copolymers according to the invention are suitable, after crosslinking, as coating agents, impregnants or adhesives and in particular as contact adhesives.

    摘要翻译： 本发明涉及由A）为99.5-75重量％的烯属不饱和单体组成的UV-可交联共聚物，B）0.5-25重量％的式I的不饱和化合物（*化学结构*）和C） 0.01〜10重量％的可与羰基邻位不含苯基的可共聚的烯属不饱和苯乙酮和/或二苯甲酮衍生物，其中X为O，S或NR1，R为未取代的或未取代的 取代的C 2 -C 6亚烷基，R 1是C 1 -C 8烷基或苯基。 根据本发明的共聚物在交联后适合作为包衣剂，浸渍剂或粘合剂，特别是作为接触粘合剂。

    Production of polytetrahydrofuran with terminal hydroxyl groups by changing the continuous and dispersed phase
    10.
    发明授权
    Production of polytetrahydrofuran with terminal hydroxyl groups by changing the continuous and dispersed phase 有权
    通过改变连续和分散相来生产具有末端羟基的聚四氢呋喃

    公开(公告)号：US06300467B1

    公开(公告)日：2001-10-09

    申请号：US09445993

    申请日：2000-03-29

    申请人： Heinz Auer ,  Jürgen Ciprian ,  Lothar Franz ,  Wolfgang Franzischka ,  Gabriele Iffland ,  Alexander Weck ,  Werner Weinle

    发明人： Heinz Auer ,  Jürgen Ciprian ,  Lothar Franz ,  Wolfgang Franzischka ,  Gabriele Iffland ,  Alexander Weck ,  Werner Weinle

    IPC分类号： C08F600

    CPC分类号： C08G65/30 ,  C08G65/20 ,  C08G65/3312

    摘要： The present invention relates to a process for preparing hydroxyl-containing polymers, in particular for preparing polytetrahydrofuran with terminal hydroxyl groups, from the corresponding acyloxy-containing polymers by transesterification with alcohols in the presence of an alkali metal- or alkaline earth metal-containing catalyst, which entails the appropriate acyloxy-containing polymer being introduced together with the alcohol and the catalyst into a first prereactor (I) and converted therein at least partly to the hydroxyl-containing polymer, and the reaction solution being fed into the upper zone (IIa) of a distillation column (II) into whose lower zone (IIb) alcohol in vapor phase is additionally fed. This involves a phase exchange at the coherent and the disperse phase at the transition from the prereactor to the distillation column. Preferably, in addition to the first prereactor, a further 3 prereactors are used which serve as holdup reactors.

    摘要翻译： 本发明涉及一种制备含羟基聚合物的方法，特别是通过在含碱金属或碱土金属的催化剂存在下与醇进行酯交换从相应的含酰氧基的聚合物制备具有末端羟基的聚四氢呋喃 ，其使得适当的含酰氧基的聚合物与醇和催化剂一起引入第一预反应器（I）中并在其中至少部分地转化为含羟基聚合物，并将反应溶液进料到上部区域（IIa ）蒸馏塔（II），其中进一步加入气相中的低级（IIb）醇。 这涉及在从预反应器到蒸馏塔的过渡处的相干和分散相的相交换。 优选地，除了第一预反应器之外，还使用用作保持反应器的另外3个预反应器。