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    METHOD FOR THE EMULSION POLYMERIZATION OF OLEFINS
    13.
    发明专利
    METHOD FOR THE EMULSION POLYMERIZATION OF OLEFINS 未知

    公开(公告)号：AU2003250070A1

    公开(公告)日：2004-02-23

    申请号：AU2003250070

    申请日：2003-07-16

    Applicant: BASF AG

    Inventor： BAUERS FLORIAN M ,  CHOWDHRY MUBARIK MAHMOOD ,  SCHMID MARKUS ,  PREISHUBER-PFLUGL PETER ,  SAVA XAVIER ,  WEISS HORST ,  MECKING STEFAN

    IPC: C08F2/22 ,  C08F2/24 ,  C08F10/02 ,  C08F110/02 ,  C08F210/16 ,  C08F10/00

    Abstract: A method for the emulsion polymerization of one or more olefins by reacting a ligand of general formulae Ia and Ib or a mixture of at least two ligands Ia or Ib, wherein R respectively represents one or several of the following radicals; hydrogen, halogen, nitrile, C1-C12-alkyl groups, C1-C12-alkoxy groups, C7-C13-aralkyl groups, C6-C14-aryl groups, and wherein identical or different compounds of general formulae Ia and Ib can, optionally, be concatenated by one or several bridges, with a phosphine compound PR3′ and a metal compound of general formula M(L2)2 or M(L2)2 (L1)z, wherein the variables are defined as follows: M is a transition metal of groups 7-10 in the periodic system of the elements; L1 represents phosphanes (R5)xPH3-x or amines (R5)xNH3-x with identical or different radicals R5, ether (R5)2O, H2O, alkohols (R5)OH, pyridine, pyridine derivatives of formula C5H5-x(R5)xN, CO, C1-C12-alkylnitriles, C6-C14-arylnitriles or ethylenically unsaturated double bond systems, wherein x is a whole number ranging from 0-3, L2 represents halogenide ions R6xNH3-x, wherein x is a whole number ranging from 0 3 and R6 represents C1-C12-alkyl, and C1-C6-alkylane ions, allylane ions, benzylane ions or arylane ions, wherein L1 and L2 can be concatenated with each other by one or several covalent bonds, z is a number ranging from 0 4. The invention also relates to the immediate use of the reaction product in the polymerization or copolymerization of olefins in water or in a solvent mixture containing at least 50 vol. % water in the presence of an emulsifier and, optionally, in the presence of an activator.

    20.
    发明专利
    未知

    公开(公告)号：BRPI0413915A

    公开(公告)日：2006-10-24

    申请号：BRPI0413915

    申请日：2004-08-27

    Applicant: BASF AG

    Inventor： DYLLICK-BRENZINGER RAINER ,  SCHMID MARKUS ,  WEHRLE J RG ,  LORENZ KLAUS ,  BRUHNS STEFAN ,  SENGE MICHAEL

    IPC: B01D19/04 ,  B01J13/04

    Abstract: Emulsifier-free antifoams are obtainable by mixing a) from 80 to 99% by weight of at least one finely divided, virtually water-insoluble, inert solid with b) from 1 to 20% by weight of at least one hydrophobic, organic compound which has an antifoam action and is solid at room temperature in the absence of a solvent in a shear gradient such that the particle size of the compounds (b) which have an antifoam action is reduced to a mean particle size of from 0.5 to 15 mum, emulsifier-free oil-in-water dispersions of mixtures of (a) and (b) are prepared by mixing the component (a) in an amount of from 80 to 99% by weight with the compounds of component (b) in an amount of from 1 to 20% by weight in the absence of emulsifiers in an extruder or kneader in a manner such that the mean particle size of the component (b) in the mixture is brought to 0.5 to 15 mum, at up to 100° C., and emulsifying the mixture in water, and the oil-in-water dispersions thus obtainable are used as antifoams and/or deaerators for aqueous, disperse or nondisperse liquids, in particular as antifoams and/or deaerators in the paper industry, in the food industry and in wastewater treatment plants.

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