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    Aluminium alkoxy and aryloxy hydrides, their complex salts with alkali hydrides and the production of the same
    1.
    发明专利
    Aluminium alkoxy and aryloxy hydrides, their complex salts with alkali hydrides and the production of the same 未知

    公开(公告)号：GB878136A

    公开(公告)日：1961-09-27

    申请号：GB361360

    申请日：1960-02-02

    Applicant: BASF AG

    Inventor： HAMPRECHT GUENTHER ,  SCHWARZMANN MATTHIAS ,  TITTEL MANFRED

    IPC: C07F5/06

    Abstract: The invention comprises aluminium alkoxy or aluminium aryloxy hydrides or their salts with an alkali metal hydride and having the formula Al(OR)nH3-n, Me(Al(OR)nH4-n) or Al2(OR)3H3 in which R is an alkyl group, a phenyl group or an alkyl-substituted phenyl group, Me is an alkali metal and n is equal to 1 or 2. They may be produced by reacting the corresponding aluminium alkoxy or aryloxy halide with an alkali metal halide in an inert solvent. Suitable solvents are, for example, ethers, hydrocarbons or tertiary amines. The reaction may be carried out at temperatures in the range 0-130 DEG C. and at atmospheric or superatmospheric pressure. Before the reaction starts there is preferably added to the reaction mixture a small amount of an aluminium alkyl, aluminium phenyl, aluminium alkoxy or aluminium phenyloxy hydride or a small amount of the product.

    Polymerisation of ethylene under high pressure
    2.
    发明专利
    Polymerisation of ethylene under high pressure 未知

    公开(公告)号：GB1047957A

    公开(公告)日：1966-11-09

    申请号：GB3322063

    申请日：1963-08-22

    Applicant: BASF AG

    Inventor： KINKEL KLAUS ,  PFANNMUELLER HELMUT ,  RODER PETER ,  ROTZOLL RUDI-HEINZ ,  TITTEL MANFRED ,  URBAN FREIDRICH ,  ZACHER WIELAND

    IPC: C08F10/00 ,  C08F110/02

    Abstract: Polyethylene of density 0.91 to 0.94 is produced by polymerization of ethylene at 150 DEG to 300 DEG C. and 1500 to 3000 atmospheres in a tubular reactor with oxygen as catalyst and in the presence of a chain transfer agent, wherein the reaction mixture is heated to 168 DEG to 174 DEG C. in the reactor and then heat is immediately extracted externally through the reactor wall by means of a coolant whose temperature does not exceed 170 DEG C., the temperature of the reaction mixture not falling below 168 DEG C. In examples, the cooling medium used is water under pressure and at 160-170 DEG C. The transfer agent may be hydrogen, a hydrocarbon, an alcohol, an ester, an acid anhydride, an aldehyde or a ketone. Sheet of good transparency may be obtained.

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