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    Production of organometallic compounds of sodium or potassium with alkylaromatic hydrocarbons
    1.
    发明授权
    Production of organometallic compounds of sodium or potassium with alkylaromatic hydrocarbons 失效
    用烷基芳烃生产钠或钾的有机金属化合物

    公开(公告)号：US3903184A

    公开(公告)日：1975-09-02

    申请号：US43158174

    申请日：1974-01-07

    Applicant: BASF AG

    Inventor： GERBERDING KARL ,  FAHRBACH GERHARD ,  SEILER ERHARD

    IPC: C07F1/04 ,  C07F1/00 ,  C07F1/06

    CPC classification number: C07F1/00

    Abstract: Production of organometallic compounds of sodium and potassium with alkylaromatic hydrocarbons (X) by reaction of the metal with a monochloride of a hydrocarbon (Y) and reaction of the organometallic compound formed with the alkylaromatic hydrocarbon (X). A fine dispersion of the metal in the alkylaromatic hydrocarbon (X) is first prepared by stirring a mixture of molten metal and hydrocarbon (X) in the presence of a dispersing agent; then the monochloride of the hydrocarbon (Y) is slowly added. The sodium or potassium compounds may be used for organometallic reactions or as monofunctional polymerization catalysts.

    Abstract translation: 通过金属与烃的一氯化物（Y）的反应和与烷基芳烃（X）形成的有机金属化合物的反应，生成具有烷基芳烃（X）的钠和钾的有机金属化合物。 首先通过在分散剂的存在下搅拌熔融金属和烃（X）的混合物来制备金属在烷基芳族烃（X）中的细分散体; 然后缓慢加入烃（Y）的一氯化物。 钠或钾化合物可用于有机金属反应或用作单官能聚合催化剂。

    TRANSPARENT POLYMER MIXTURES HAVING HIGH IMPACT STRENGTH
    5.
    发明专利
    TRANSPARENT POLYMER MIXTURES HAVING HIGH IMPACT STRENGTH 未知

    公开(公告)号：CA1087340A

    公开(公告)日：1980-10-07

    申请号：CA272390

    申请日：1977-02-21

    Applicant: BASF AG

    Inventor： FAHRBACH GERHARD ,  GERBERDING KARL ,  MITTNACHT HANS ,  SEILER ERHARD ,  STEIN DIETER

    IPC: C08L25/06 ,  C08L53/02

    Abstract: Mixtures of polystyrene and a block copolymer of a monovinyl-aromatic compound and a conjugated diene. The mixture contains a thermoplastic, non-elastomeric block copolymer having a star-shaped branched structure, the branches being of at least two types of different average composition, and at least 50% by weight of the monovinyl-aromatic compound being present as terminal polymer blocks in one or more of the branches. The mixtures, which exhibit good transparency and high impact strength, are particularly suitable for the manufacture of moldings and packaging materials.

    PREPARATION OF BRANCHED BLOCK COPOLYMERS
    8.
    发明专利
    PREPARATION OF BRANCHED BLOCK COPOLYMERS 未知

    公开(公告)号：CA1180840A

    公开(公告)日：1985-01-08

    申请号：CA383818

    申请日：1981-08-13

    Applicant: BASF AG

    Inventor： HEINZ GERHARD ,  SCHMITT BURGHARD ,  DORN INGO H ,  GAUSEPOHL HERMANN ,  GERBERDING KARL ,  JUNG RUDOLF H ,  MITTNACHT HANS ,  POEHRT JUERGEN ,  WITTMER PAUL

    IPC: C08F297/04 ,  C08G81/02

    Abstract: of the disclosure: A process for the preparation of branched block copolymers of from 60 to 95 % by weight of a monovinyl-aromatic monomer and from 40 to 5 % by weight of a conjugated diene by polymerizing the monomers in an inert solvent in the presence of a monolithiumhydrocarbon as the initiator, wherein, in a first process stage (a), from 50 to 80, or where necessary at most 90, % by weight of the total amount of monovinyl-aromatic compound are polymerized to virtually complete conversion in the presence of a relatively small amount of the monolithium-hydrocarbon. This stage is carried out by starting with from 30 to 70 % by weight of the vinylaromatic monomer and adding from 70 to 30 % by weight in the feed, during the polymerization, in such a way that the polymerization temperature, which at the start of the polymerization is from 30 to 40.degree.C, is kept at from 45 to 70.degree.C, with use of reflux cooling. After all the monomer feed has been added the reaction temperature is lowered to 30- 40.degree.C by evaporative cooling. In a second process stage (b), an additional amount of initiator is added to the reaction solution, after which from 1 to 30 % by weight of the total amount of monovinyl-aromatic monomer can be added, the sum of the amounts of monovinylaromatic monomer added in the first and second process stages being at most 90 % by weight of the total amount of monovinyl-aromatic monomer. The monovinyl-aromatic monomer added in the second process stage is polymerized to virtually complete conversion, employing the temperature profile described for stage (a). In process stage (c), the remainder of the monovinyl-aromatic monomer and all of the conjugated diene are added, at least predominantly in the form of a mixture, and polymerized so that the reaction temperature does not rise above 90 - 110.degree.C. Finally, after virtually complete conversion of the monomers, and preferably without prior cooling, a suitable liquid polyfunctional coupling agent is run in undiluted and the mixture of the linear block copolymers obtained, which still contain active terminal lithium-carbon bonds, is coupled, with stirring, to form branched block copolymers. The products prepared according to the invention are used for injection molding.

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