2.
    发明专利
    未知

    公开(公告)号:DE19754380A1

    公开(公告)日:1999-06-10

    申请号:DE19754380

    申请日:1997-12-09

    Applicant: BASF AG

    Abstract: The invention relates to a continuous gas phase fluidization method for producing ethylene homopolymerisates and copolymerisates with a density (d) of 0.87 to 0.97 g/cm . According to said method, ethylene or mixtures of ethylene and C3- to C8- alpha -monoolefins are (co)polymerised in the polymerisation zone of a gas phase fluidized bed reactor at pressures of 1 to 100 bar and at temperatures of 30 to 125 DEG C in the gas phase in an intermixed bed of fine particulate polymerisate in the presence of a supported chromium catalyst. The polymerisation heat produced is evacuated by cooling the reactor gas, said reactor gas being guided in a closed circuit, and the resulting (co)polymerisate is transferred out of the gas phase fluidized bed reactor. In order to produce a (co)polymerisate of a pre-selected density (d), the (co)polymerisation is carried out at a temperature within a range limited by an upper envelope of equation (I) and a lower envelope of equation (II), the variables in said equations having the following meanings: TH = the highest reaction temperature in DEG C; TN = the lowest reaction temperature in DEG C; and d'= the numerical value of the density (d) of the (co)polymerisate to be produced.

    4.
    发明专利
    未知

    公开(公告)号:DE19800020A1

    公开(公告)日:1999-07-08

    申请号:DE19800020

    申请日:1998-01-05

    Applicant: BASF AG

    Abstract: Continuous gas phase polymerization for producing ethylene homopolymers and -copolymers, comprises polymerizing ethylene or monoolefin from but-1-en, pent-1-en, 2-methylpentene, hex-1-en, hept-1-en and oct-1-en in the a polymerization reactor; and endowing a catalyst poison with boiling point higher than a circle gas pipeline, and molecular weight greater than 100 g/mol at a position after the reactor, but before the cooler and compressor. Continuous gas phase polymerization for producing ethylene homopolymers and -copolymers, comprises polymerizing ethylene and/or monoolefin from but-1-en, pent-1-en, 2-methylpentene, hex-1-en, hept-1-en or oct-1-en, in the polymerization zone of a gas phase polymerization reactor at 30-125[deg]C and 1-100 bar in the gaseous phase in a finely divided polymer bed, in the presence of a metallocene catalyst in carrier form polymer, where a reactor gas is lead into the circle gas pipeline for the removal of the polymerization heat; and endowing a catalyst poison with boiling point higher than circle gas pipeline and molecular weight greater than 100 g/mol at a position after the reactor but before the cooler and compressor, for preventing polymer linings, such that the productivity of the catalyst is not essentially affected in the reactor.

    5.
    发明专利
    未知

    公开(公告)号:ES2091851T3

    公开(公告)日:1996-11-16

    申请号:ES91120737

    申请日:1991-12-03

    Applicant: BASF AG

    Abstract: The invention relates to novel polyethyleneimine and polyvinylamine derivatives, the polyethyleneimines containing the structural elements Ia and/or Ib and the polyvinylamines containing the structural elements IIa, IIb and IIc in which the following applies to the degrees of polymerisation n, m and p: n >/= 1, m >/= 0 and P >/= 0, and X is CR R PO3R R or CR R SO3R , X , independently of X , is a hydrogen atom, CR R PO3R R or CR R SO3R , Y and Y , independently of one another, are at least one CHR PO3R R or CHR SO3R group and possibly a hydrogen atom, Y and Y , independently of one another and of Y and Y , are hydrogen atoms, CHR PO3R R or CHR SO3R groups, and Z -Z are identical or different inorganic and/or organic radicals, where R and R , independently of one another, are a hydrogen atom, a C1-C12-alkyl group or an aryl group, and R and R , independently of one another, are a hydrogen atom or an alkali metal atom or NR R R R where R to R are identical or different radicals selected from the group consisting of hydrogen, alkyl, aryl, hydroxyalkyl and benzyl. The invention also relates to aluminium-based substrate materials coated with these polyethylenimines and/or polyvinylamines, and to the use thereof for the production of offset printing plates.

    6.
    发明专利
    未知

    公开(公告)号:DE59108260D1

    公开(公告)日:1996-11-14

    申请号:DE59108260

    申请日:1991-12-03

    Applicant: BASF AG

    Abstract: The invention relates to novel polyethyleneimine and polyvinylamine derivatives, the polyethyleneimines containing the structural elements Ia and/or Ib and the polyvinylamines containing the structural elements IIa, IIb and IIc in which the following applies to the degrees of polymerisation n, m and p: n >/= 1, m >/= 0 and P >/= 0, and X is CR R PO3R R or CR R SO3R , X , independently of X , is a hydrogen atom, CR R PO3R R or CR R SO3R , Y and Y , independently of one another, are at least one CHR PO3R R or CHR SO3R group and possibly a hydrogen atom, Y and Y , independently of one another and of Y and Y , are hydrogen atoms, CHR PO3R R or CHR SO3R groups, and Z -Z are identical or different inorganic and/or organic radicals, where R and R , independently of one another, are a hydrogen atom, a C1-C12-alkyl group or an aryl group, and R and R , independently of one another, are a hydrogen atom or an alkali metal atom or NR R R R where R to R are identical or different radicals selected from the group consisting of hydrogen, alkyl, aryl, hydroxyalkyl and benzyl. The invention also relates to aluminium-based substrate materials coated with these polyethylenimines and/or polyvinylamines, and to the use thereof for the production of offset printing plates.

    7.
    发明专利
    未知

    公开(公告)号:DE19716239A1

    公开(公告)日:1998-10-22

    申请号:DE19716239

    申请日:1997-04-18

    Applicant: BASF AG

    Abstract: The invention relates to a method for polymerizing alpha -olefins in a gaseous phase at a temperature ranging from 30 to 150 DEG C and at a pressure between 5 and 80 bars with a catalyst or a catalyst mixture which contains, as an antistatic agent, 0.1-5 wt. % ZnO and/or water-free MgO in relation to the total catalyst mixture. The inventive method excludes a method according to which the catalyst mixture contains a chrome catalyst and an MgO-based Ziegler catalyst which is modified with an alkene and alkylaluminium hydride and contains free MgO, the total MgO volume being no less than 2 wt. % of the catalyst mixture.

    8.
    发明专利
    未知

    公开(公告)号:DE4039920A1

    公开(公告)日:1992-06-17

    申请号:DE4039920

    申请日:1990-12-14

    Applicant: BASF AG

    Abstract: The invention relates to novel polyethyleneimine and polyvinylamine derivatives, the polyethyleneimines containing the structural elements Ia and/or Ib and the polyvinylamines containing the structural elements IIa, IIb and IIc in which the following applies to the degrees of polymerisation n, m and p: n >/= 1, m >/= 0 and P >/= 0, and X is CR R PO3R R or CR R SO3R , X , independently of X , is a hydrogen atom, CR R PO3R R or CR R SO3R , Y and Y , independently of one another, are at least one CHR PO3R R or CHR SO3R group and possibly a hydrogen atom, Y and Y , independently of one another and of Y and Y , are hydrogen atoms, CHR PO3R R or CHR SO3R groups, and Z -Z are identical or different inorganic and/or organic radicals, where R and R , independently of one another, are a hydrogen atom, a C1-C12-alkyl group or an aryl group, and R and R , independently of one another, are a hydrogen atom or an alkali metal atom or NR R R R where R to R are identical or different radicals selected from the group consisting of hydrogen, alkyl, aryl, hydroxyalkyl and benzyl. The invention also relates to aluminium-based substrate materials coated with these polyethylenimines and/or polyvinylamines, and to the use thereof for the production of offset printing plates.

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