中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

5 records (took 0.022 seconds)

    2.
    发明专利
    未知

    公开(公告)号：DE1720295A1

    公开(公告)日：1971-06-09

    申请号：DEB0094197

    申请日：1967-08-29

    Applicant: BASF AG

    Inventor： TRIESCHMANN HANS-GEORG PROF DR ,  ZEITLER GERHARD DR ,  DICKHAEUSER HEINER DR ,  REUTER LOTHAR ,  PFANNMUELLER HELMUTH DR

    IPC: C08F8/20 ,  C08F

    Abstract: 1,228,921. Chlorinating ethylene polymers. BADISCHE ANILIN- & SODA-FABRIK A.G. 28 Aug., 1968 [29 Aug., 1967], No. 41123/68. Heading C3P. A chlorinated ethylene polymer is prepared by allowing gaseous chlorine to act on a finely particled compact ethylene polymer which has been obtained by high pressure polymerization and which has an average particle diameter with the range from 200 to 800 microns and a specific surface area of from 70 to 300 cm. 2 /g. in the absence of solvents and suspension agents. Suitable polymers are homopolymers of ethylene or copolymers of ethylene with one or more other singly unsaturated olefins e.g. propylene or n-butene. The ethylene polymer may have a molecular weight of 10,000 to 180,000 and a density of 0À880 to 0.938 g./cm. 3 . The chlorination may be carried out in a fluidized bed, a rotary kiln or a stirred vessel.

    4.
    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

    Inventor： TRIESCHMANN HANS-GEORG PROF DR ,  ZEITLER GERHARD DR ,  REUTER LOTHAR ,  DICKHAEUSER HEINER DR ,  PFANNMUELLER HELMUT DR

    IPC: C08F8/20 ,  C08F27/03

    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to the amount of constituents being continuously introduced, and isolating chlorinated polyethylene from the solution withdrawn.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.

Patent Agency Ranking