Olefin dimerization
    11.
    发明授权
    Olefin dimerization 失效
    烯烃二聚

    公开(公告)号:US3916019A

    公开(公告)日:1975-10-28

    申请号:US65327267

    申请日:1967-07-13

    Applicant: ETHYL CORP

    CPC classification number: C07C2/24 C07C2523/04 C07C2527/232

    Abstract: A process for dimerizing straight chain alpha-olefins having 3 to 8 carbon atoms using as a catalyst sodium metal dispersed upon the carbonate of an alkali metal having an atomic number of 19 to 55, inclusive, or of the metal barium. Dimerizations of propylene at about 1000 psi in the presence of a catalyst consisting of sodium dispersed on potassium carbonate give good yields of 4methylpentene-1.

    Abstract translation: 使用分散在原子序数为19〜55的碱金属的碳酸盐或金属钡上的作为催化剂的金属钠使具有3〜8个碳原子的直链α-烯烃二聚的方法。 在由分散在碳酸钾上的钠组成的催化剂存在下,约1000psi下丙烯的二聚反应得到4-甲基戊烯-1的良好产率。

    Manufacture of mixed alkyl tetraalkyllead products
    14.
    发明授权
    Manufacture of mixed alkyl tetraalkyllead products 失效
    混合烷基四烷基铅产品的制造

    公开(公告)号:US3231510A

    公开(公告)日:1966-01-25

    申请号:US19142162

    申请日:1962-05-01

    Applicant: ETHYL CORP

    Inventor: CLOSSON REX D

    CPC classification number: C07F7/24 C10L1/306

    Abstract: Mixed-alkyl lead compounds are prepared by contacting a mixture of at least two tetraalkyl lead compounds capable of redistribution with an activated aluminosilicate clay, a synthetic zeolite, a natural zeolite, an activated silica or an activated alumina. These mixed alkyl lead compounds may be used in anti-knock compositions, and the redistribution reaction may be carried out in the presence of halogenated hydrocarbon materials employed as scavengers.

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