Process for producing polyisobutenes
    1.
    发明授权
    Process for producing polyisobutenes 失效
    生产聚异丁烯的方法

    公开(公告)号:US4379899A

    公开(公告)日:1983-04-12

    申请号:US312953

    申请日:1981-10-20

    CPC classification number: C08F10/00 C08F10/10

    Abstract: High molecular weight polybutenes having a viscosity SSU above 1,000,000 at 210.degree. F. are produced by using a three-component catalyst system containing an alkyl aluminium halide, tertiary butyl halide and a metal halide selected from SnCl.sub.4, SnBr.sub.4, TiCl.sub.4, and TiBr.sub.4. The reaction phase is homogeneous and the catalyst components are added as a solution in an inert solvent. The polyisobutene product so produced are useful additives for oil, adhesives and mastics.

    Abstract translation: 通过使用含有烷基铝卤化物,叔丁基卤化物和选自SnCl 4,SnBr 4,TiCl 4和TiBr 4的金属卤化物的三组分催化剂体系制备在210°F下具有高于1,000,000的粘度SSU的高分子量聚丁烯。 反应相是均相的,催化剂组分以惰性溶剂中的溶液形式加入。 如此生产的聚异丁烯产品是油,粘合剂和胶粘剂的有用添加剂。

    Process for the removal of hydroxyacetone from phenol
    2.
    发明授权
    Process for the removal of hydroxyacetone from phenol 失效
    从苯酚中除去羟基丙酮的方法

    公开(公告)号:US4251325A

    公开(公告)日:1981-02-17

    申请号:US14627

    申请日:1979-02-23

    CPC classification number: C07C37/74

    Abstract: Phenol containing less than 30 ppm hydroxyacetone is produced by feeding hydroxyacetone-contaminated phenol obtained by the decomposition of cumene hydroperoxide, which phenol is substantially free from cleavage catalyst and light ends such as acetone and water, and up to 22% by weight of cumene and/or alpha-methyl styrene to an intermediate point in a distillation column from which there is removed overhead a fraction containing cumene and/or alpha-methyl styrene and a substantial proportion of the hydroxyacetone in the feed and there is removed from the base a fraction comprising phenol containing less than 30 ppm hydroxyacetone, whilst maintaining the column under such conditions of temperature and pressure that cumene and/or alpha-methyl styrene forms from 55 to 80% by weight of the composition on the uppermost 15 to 70% of the trays in the stripping section and phenol forms greater than 50% by weight of the composition on the bottommost 10 to 50% of the trays in the stripping section.

    Abstract translation: 含有少于30ppm羟基丙酮的苯酚是通过将通过氢过氧化枯烯的分解获得的羟基丙酮污染的苯酚进料的,该苯酚基本上不含裂解催化剂和轻馏分如丙酮和水,以及高达22重量%的枯烯和 /或α-甲基苯乙烯转化到蒸馏塔中的中间点,从塔顶馏出含有枯烯和/或α-甲基苯乙烯的馏分和大部分羟基丙酮在进料中,并从基料中除去馏分 包括含有小于30ppm羟基丙酮的苯酚,同时保持柱在这样的温度和压力条件下,使枯烯和/或α-甲基苯乙烯在组合物的最重量的15至70%的塔板上形成55至80重量% 在汽提部分中,苯酚形式大于组合物重量的50%以上,剥离部分最底部的10至50% 离子。

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