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    Dimerization of olefins
    2.
    发明授权
    Dimerization of olefins 失效

    公开(公告)号：US3622648A

    公开(公告)日：1971-11-23

    申请号：US3622648D

    申请日：1968-05-17

    Applicant: BASF AG

    Inventor： SCHLOEMER KARL ,  KROEPER HUGO ,  WEITZ HANS-MARTIN

    IPC: C07C2/32 ,  C07C3/20

    CPC classification number: C07C2/32 ,  C07C2523/04 ,  C07C2531/22 ,  C07C2531/26

    Abstract: An improved process for the dimerization of olefins in the presence of alkali metal catalysts at 60* to 200* C. and at atmospheric pressure up to 300 atmospheres, catalysts being used which have been derived from an alkali metal and an organic compound containing one or more than one carbonyl group. The process is particularly suitable for effective and selective dimerization of propylene to 4-methylpentene-1. Some of the dimers obtained are suitable as antiknock additives and for the production of polymers.

    Production of 1,4-dicyanobutene-(2)
    5.
    发明授权
    Production of 1,4-dicyanobutene-(2) 失效
    生产1,4-二氨基苯甲酸（2）

    公开(公告)号：US3557187A

    公开(公告)日：1971-01-19

    申请号：US3557187D

    申请日：1966-05-18

    Applicant: BASF AG

    Inventor： WEITZ HANS-MARTIN ,  MERGER FRANZ ,  KOOPMANN JUERGEN

    IPC: B01J19/00 ,  C01B7/09 ,  C25B1/24 ,  C07C121/06

    CPC classification number: C07C253/14 ,  B01J19/0086 ,  C01B7/096 ,  C25B1/24

    Abstract: A PROCESS FOR PRODUCING 1,4-DICYANOBUTENE-(2) IN WHICH AT LEAST ONE OF THE COMPOUNDS 1,2-DIBROMOBUTENE(3) OR 1,4-DIBROMOBUTENE-(2) IS REACTED WITH HYDROCYANIC ACID IN THE PRESENCE OF A COPPER SALT CATALYST. THE PROCESS TAKES PLACE IN THE PRESENCE OF AN AQUEOUS ACID MEDIUM AND IN THE PRESENCE OF AN ACID ACCEPTOR. DURING THE REACTION A PH OF FROM -1TO +3 IS MAINTAINED. THE HYDROGEN BROMIDE THAT IS PRESENT IN THE REACTION SOLUTION IS OXIDIZED TO ELEMENTARY BROMINE AND THE AQUEOUS SOLUTION CONTAINING THE ACID ACCEPTOR IS RECYCLED TO THE REACTION MIXTURE. THE RATE OF REACTION OF THE PROCESS IS CONSIDERABLY HIGHER THAN THAT OF CONVENTIONAL METHODS AND LOWER YIELDS OF BY-PRODUCTS ARE ACHIEVED.

    Manufacture of ethylbenzene
    7.
    发明授权
    Manufacture of ethylbenzene 失效
    制造乙苯

    公开(公告)号：US3903185A

    公开(公告)日：1975-09-02

    申请号：US41625973

    申请日：1973-11-15

    Applicant: BASF AG

    Inventor： VOGEL HANS-HENNING ,  WEITZ HANS-MARTIN ,  LORENZ ERNST ,  PLATZ ROLF

    IPC: C07C5/333 ,  B01J23/00 ,  C07B61/00 ,  C07C1/00 ,  C07C5/367 ,  C07C5/387 ,  C07C15/073 ,  C07C67/00 ,  C07C5/24

    CPC classification number: C07C5/367 ,  C07C15/073

    Abstract: A method of manufacturing ethylbenzene in high yield by catalytic aromatization of the C8-cycloolefins obtained in the dimerization of unsaturated C4-hydrocarbons is described. Byproducts attributable to cracking, isomerization and decomposition of the raw material into its starting materials are virtually not detectable in the reaction product. The aromatization product can therefore be converted to styrene without prior distillation or purification.

    Abstract translation: 描述了通过在不饱和C4烃的二聚中获得的C8-环烯烃的催化芳构化而以高产率制备乙苯的方法。 归因于原料裂解，异构化和分解成其原料的副产物实际上在反应产物中不可检测。 因此，芳构化产物可以在没有事先蒸馏或纯化的情况下转化为苯乙烯。

    Separation of bromine from gaseous mixtures containing oxides of nitrogen
    8.
    发明授权
    Separation of bromine from gaseous mixtures containing oxides of nitrogen 失效
    从含有氧化物的气体混合物中分离出的溴

    公开(公告)号：US3592601A

    公开(公告)日：1971-07-13

    申请号：US3592601D

    申请日：1968-10-22

    Applicant: BASF AG

    Inventor： GOLSER LEOPOLD ,  WEITZ HANS-MARTIN ,  APPELT WALTER

    IPC: C01B7/09 ,  C01B7/10

    CPC classification number: C01B7/096

    Abstract: FOR THE SEPARATION OF BROMINE FROM GASEOUS MIXTURES WHICH, IN ADDITION TO BROMINE, CONTAIN OXIDES OF NITROGEN WITH LESS THAN PENTAVALENT NITROGEN AND WITH OR WITHOUT NITROSYL BROMIDE, AT LEAST AS MUCH OXYGEN IS ADDED AS IS NECESSARY FOR CONVERTING THE NITROGEN OF THE OXIDES OR NITROSYL BROMIDE INTO THE PENTRVALENT STATE. THESE MIXTURES ARE THEN TREATED WITH WATER OR DILUTE AQUEOUS NITRIC ACID.

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