27.
    发明专利
    未知

    公开(公告)号:DE1720296A1

    公开(公告)日:1974-05-30

    申请号:DE1720296

    申请日:1967-08-29

    Applicant: BASF AG

    Abstract: 1,228,976. Chlorinating polyethylene. BADISCHE ANILIN- & SODA-FABRIK A.G. 28 Aug., 1968 [29 Aug., 1967], No. 41122/68. Heading C3P. Polyethylene is chlorinated in a continuous process in which finely particled polyethylene is treated with chlorine in a chlorohydrocarbon whose boiling point is in the range from 30‹ to 90‹ C., the process comprising continuously introducing a high pressure polyethylene in the form of particles having a diameter of from 2 to 6 mm., a chlorohydrocarbon and chlorine into a reaction zone which contains solid polyethylene and a solution of from 1 to 20% by weight with respect to the solution of chlorinated polyethylene in the chlorohydrocarbon, continuously withdrawing from the reaction zone a fraction of the solution which is equivalent in amount to the amount of constituents being continuously introduced, and isolating chlorinated polyethylene from the solution withdrawn. Suitable chlorohydrocarbons are carbon tetrachloride, chloroform and trichloroethane.

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