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    Production of emulsifiable waxes
    2.
    发明专利
    Production of emulsifiable waxes 未知

    公开(公告)号：GB959362A

    公开(公告)日：1964-06-03

    申请号：GB4742062

    申请日：1962-12-17

    Applicant: BASF AG

    Inventor： JAHRSTORFER MICHAEL ,  SCHMEIDL KARL ,  STAIGER GERHARD ,  VOGEL LUDWIG

    IPC: C08F8/06 ,  C08F8/50 ,  C09G1/08

    Abstract: Molten polyolefins having a molecular weight of between 1,000 and 50,000 are oxidized with oxygen or oxygen-containing gas under increased pressure and at a temperature between 130 DEG and 250 DEG C. until 0.5 to 25 kg of oxygen has been absorbed for each 100 kg of polyolefin and the oxidation is carried out with intense agitation with an agitator output of from 1 to 15 kilowatts per 100 kg of polyolefin. Polyolefins exemplified are polyethylene, polypropylene, and a copolymer of ethylene and carbon monoxide containing between 1 and 3 carbonyl groups per 50 ethylene groups. The materials may be made by thermally degrading high molecular weight polyolefins. The products are easily emulsifiable waxes.

    Improvements in the production of dialkyl esters of iso- and/or terephthalic acids
    4.
    发明专利
    Improvements in the production of dialkyl esters of iso- and/or terephthalic acids 未知

    公开(公告)号：GB878269A

    公开(公告)日：1961-09-27

    申请号：GB4327759

    申请日：1959-12-21

    Applicant: BASF AG

    Inventor： JAHRSTORFER MICHAEL ,  BOGENSTAETTER GUENTER ,  WENNER GOTTHILF

    IPC: C07C67/39 ,  C07C69/80 ,  C07C69/82

    Abstract: Dialkyl iso- and terephthalates are prepared by treating with a gas containing molecular oxygen at a temperature between 120 DEG and 220 DEG C. and a pressure of at least 8 atmospheres, at least one dialkyl-benzene which has two oxidisable side chains in the same position as the carboxylic acid ester groups in the desired ester and contains 1-4 carbon atoms in each side chain or at least one chlorine-substituted dialkyl-benzene of the same chain length in which at least one carbon atom in at least one alkyl group is substituted by one or two chlorine atoms, in an alkanolic solution which contains 60-98% by weight of the alkanol containing 1 to 4 carbon atoms, in a reaction zone permanently filled with the liquid to be oxidised and simultaneously esterified, so that throughout the treatment with oxygen there is no formation of a coherent gas phase above the liquid. Specified starting materials are m- or p-xylenes or -cymenes, m- or p-di-ethyl- or -isopropyl- or -isobutyl-benzenes, m- or p-xylene dichloride, -xylyl chloride, -xylylidene dichloride, -chloromethylcumenes, -chloroethylcumenes and 1:4-di-(chloroethyl) - benzene. Catalysts, such as soluble fatty acid salts of manganese, cobalt or vanadium, alkali metal bromides and cobalt, manganese and nickel bromides, may be used. In examples a solution of p-diisopropyl-benzene or p-xylene in methanol with a mixture of manganese acetate and cobalt bromide as catalyst is treated with oxygen to give dimethyl terephthalate. Specification 878,268 is referred to.

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