1.
    发明专利
    未知

    公开(公告)号:ES2112873T3

    公开(公告)日:1998-04-16

    申请号:ES92108558

    申请日:1992-05-21

    Applicant: BASF AG

    Abstract: Catalyst systems for the polymerisation of C2- to C10-alk-1-enes, containing, as active constituents, a complex compound of metals from sub-groups IV and V of the Periodic Table and an oligomeric aluminoxane compound, where first the complex compound of metals from sub-group IV and V of the Periodic Table is mixed with the oligomeric aluminoxane compound, and subsequently the resultant mixture is applied to finely divided polymer. The catalyst systems according to the invention are also particularly suitable for the gas-phase polymerisation of C2- to C10-alk-1-enes and can be isolated after their preparation.

    2.
    发明专利
    未知

    公开(公告)号:DE4334846A1

    公开(公告)日:1995-04-20

    申请号:DE4334846

    申请日:1993-10-13

    Applicant: BASF AG

    Abstract: The preparation of carboxyl-containing copolymers of ethylene by polymer-analogous pyrolytic ester cleavage of copolymers, comprising a) from 60 to 99.9 mol% of ethylene, b) from 0.1 to 40 mol% of (C4- to C8-tert-alkyl) esters of copolymerisable C3-C12-carboxylic acids and c) from 0 to 20 mol% of further copolymerisable monomers by carrying out the pyrolytic ester cleavage at temperatures of from 150 to 250 DEG C in the presence of organic sulphonic acids, in the absence of a solvent and in the virtual absence of initiators for free-radical reactions.

    3.
    发明专利
    未知

    公开(公告)号:DE4218201A1

    公开(公告)日:1993-12-09

    申请号:DE4218201

    申请日:1992-06-03

    Applicant: BASF AG

    Abstract: Catalyst systems for polymerising C2 to C10-alk-1-enes contain as active components (a) a metallocene complex having the general formula (I), in which the substituents and indexes have the following meaning: M stands for a metal of the secondary group III, IV or V of the periodic table or for a metal from the group of the lanthanides; X stand for halogen, hydrogen, C1- to C10-alkyl, C3- to C10-cycloalkyl, C6- to C15-aryl, alkylaryl with 7 to 15 C atoms or -OR , in which R stands for C1 to C1 to C10-alkyl, C6- to C15-aryl, alkylaryl, arylalkyl, fluoroalkyl or fluoroalkyl or fluoroaryl having each 1 to 10 C atoms in the alkyl residue and 6 to 20 C atoms in the aryl residue; n stands for the valency of M, less the number two; R to R stand for hydrogen, C1 to C10-alkyl, C3- to C10-cycloalkyl, which in turn can carry a C1- to C10-alkyl as substituent, C6- to C15-aryl or arylalkyl, whereas if required two adjacent residues may also stand together for cyclic groups having 4 to 15 C atoms, or Si(R )3, in which R stands for C1- to C10-alkyl, C6- to C15-aryl or C3- to C10-cycloalkyl; y , y stand for CH2, C(R )2, Si(R )2, Ge(R )2 or Sn(R )2, in which R stands for C1- to C10-alkyl, C6- to C15-aryl, C3- to C10-cycloalkyl, alkylaryl or Si(R )3, in which R stands for C1- to C10-alkyl, C6- to C15-aryl, C3- to C10-cycloalkyl or alkylaryl; as well as (b) an open-chain or cyclic alumoxane compound having the general formula (II) or (III), in which R stands for a C1- to C4-alkyl group and m is an integer between 5 and 30.

    Transition metal-amidinato complexes

    公开(公告)号:DE4420783A1

    公开(公告)日:1995-12-21

    申请号:DE4420783

    申请日:1994-06-15

    Applicant: BASF AG

    Abstract: A catalyst system (I) for the polymerisation of olefinic hydrocarbons contains (A) a metal-amidinato complex of formula (A) and opt. (B) an acceptor cpd. for substit. X in (A) as activator; M = Sub-Gp. III, IV, V or VI metal or lanthanide metal; X = negative leaving atom or gp. (these can be identical or different if (n = m) is greater than 1); R -R = C-organic or Si-organic gps.; n = valency of M in complex (A); m = 1-5; n - m = O or more. Also claimed is a process for the prodn. of homo- or copolymers of ethylene and other olefins by insertion polymerisation using catalyst (I). Also claimed are polymers of ethylene and alkyl- and aryl-substd. olefins obtd. by this process.

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