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    3.
    发明专利
    未知

    公开(公告)号：DE3030055A1

    公开(公告)日：1982-03-25

    申请号：DE3030055

    申请日：1980-08-08

    Applicant: BASF AG

    Inventor： STEIN DIETER DIPL CHEM DR ,  BACHL ROBERT DIPL CHEM DR ,  RICHTER KONRAD DIPL CHEM DR

    IPC: C08F4/69 ,  C08F10/00 ,  C08F10/02 ,  C08F4/78

    Abstract: A process for the preparation of ethylene homopolymers, and ethylene copolymers with minor amounts of higher alpha -monoolefins, by polymerizing the monomer or monomers by means of a supported catalyst (1) containing a chromium-hydrocarbon complex (1.2) on an inorganic oxide carrier (1.1), wherein (1) a supported catalyst is employed which contains (1.2) a chromium-hydrocarbon complex of the formula RCrACrR, where R is a cyclic and/or open-chain hydrocarbon, or hydrocarbon radical, of 2n and 2n+1 carbon atoms respectively and having from 1 to n non-cumulated double bonds, n being from 2 to 10, Cr is chromium and A is cyclooctatetraene, a divalent n-octatetraene radical or alkyl-substituted homologs thereof, on (1.1) a particular inorganic oxide carrier, with or without (2) a co-catalyst chosen from a particular group of alkyl-aluminum compounds. The process gives polymers having a particularly broad molecular weight distribution.

    4.
    发明专利
    未知

    公开(公告)号：DE3039976A1

    公开(公告)日：1982-06-03

    申请号：DE3039976

    申请日：1980-10-23

    Applicant: BASF AG

    Inventor： REICHEL FRITZ DIPL CHEM DR ,  RICHTER KONRAD DIPL CHEM DR ,  HOEHR LOTHAR DIPL CHEM DR

    IPC: C08F2/06 ,  C08F220/34 ,  C08F246/00 ,  D21H17/42 ,  D21H17/45 ,  D21H21/16 ,  C08F212/08

    Abstract: 1. A finely divided polymer dispersion which contains polymerized units of nitrogen-containing monomers, and is obtained by a two-stage polymerization reaction, wherein, in the first polymerization stage, a low molecular weight prepolymer, which has a viscosity of from 1.06 to 1.40 (measured in an Ubbelohde viscometer) in a 1% strength solution of a mixture of 99 parts by weight of dimethyl formamide and 1 part by weight of glacial acetic acid at 20 degrees C, is prepared in a water-miscible solvent, which may contain up to 15% by weight of water, in the manner of a solution copolymerization from a monomer mixture which contains (a) per mole of a nitrogen-containing monomer of the formula see diagramm : EP0051144,P13,F1 or see diagramm : EP0051144,P13,F3 where A is O or NH, B is Cn H2n , n being from 1 to 8, R**1 and R**2 are each Cm H2m+1 , m being from 1 to 4, R**3 is H or CH3 , X4 **- is OH**- , Cl**- , Br**- or CH3 -OSO3 H**- , and R**4 is Cm H2m+1 , m being from 1 to 4, (b) 2.5 to 10 moles of at least one nonionic, hydrophobic, ethylenically unsaturated monomer which, if it is polymerized on its own, forms a hydrophobic polymer, (c) 0.5 to 1.5 moles of an ethylenically unsaturated carboxylic acid or maleic anhydride, and (d) 0 to 7 moles of a nonionic, hydrophilic, ethylenically unsaturated monomer, the solution of the prepolymer is diluted with water in a weight ratio of from 1:3 to 1:50 and, in the second polymerization stage, 1 to 32 parts by weight of at least one nonionic, hydrophobic, ethylenically unsaturated monomer, which is the same as monomer (b) of the prepolymer, are polymerized per part by weight of the solution polymer in this polymer solution in the manner of an emulsion polymerization in the presence of a usual amount of a water-soluble polymerization initiator.

    Ethylene (co)polymerisation carrier catalyst prepn. - by coating porous finely-divided silica-alumina support with chromium hydrocarbon complex cpd.
    5.
    发明专利
    Ethylene (co)polymerisation carrier catalyst prepn. - by coating porous finely-divided silica-alumina support with chromium hydrocarbon complex cpd. 未知

    公开(公告)号：DE3030916A1

    公开(公告)日：1982-04-08

    申请号：DE3030916

    申请日：1980-08-16

    Applicant: BASF AG

    Inventor： STEIN DIETER DIPL CHEM DR ,  BACHL ROBERT DIPL CHEM DR ,  RICHTER KONRAD DIPL CHEM DR

    IPC: C08F4/69 ,  C08F10/02 ,  C08F4/78

    Abstract: In the prepn. of a new carrier catalyst, contg. a Cr-hydrocarbon complex cpd. on an inorganic oxide carrier, a Cr hydrocarbon-complex cpd. having formula RCrACrR (where R is a hydrocarbon or a ring- and/or open-chained hydrocarbyl gp. contg. 2 n or 2n + 1C atoms and 1-n non-heaped double bonds; n is integer 2-10 and A is cyclooctatetraene or a divalent n-octatetraene gp. in either of which up to 8 H atoms can be substd. by 1-4C alkyl gps.) is applied to a finely-divided, porous, inorganic-oxidic carrier. The carrier has particle dia. 1-1000 microns, pore vol. 0.3-3 cc/g, surface 100-1000 sq.m/g and formula SiO2.aAl2O3 (where a is no. 0-2). The carrier catalyst (I) whould contain 0.01-10 wt.% w.r.t. carrier (1,1), of complex cpd. (1,2), calculated as Cr. The catalyst is used in C2H4 homo-polymerisation or co-polymerisation with alpha-mono-olefins. Polymers can be obtd. having a wide mol.wt. distribution.

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