中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

37 records (took 0.019 seconds)

    24.
    发明专利
    未知

    公开(公告)号：DE502004005281D1

    公开(公告)日：2007-11-29

    申请号：DE502004005281

    申请日：2004-07-08

    Applicant: BASF AG

    Inventor： GAO JUN ,  KONG XIANG-MING ,  HUNGENBERG KLAUS-DIETER ,  SCHMIDT-THUEMMES JUERGEN

    IPC: C08F2/22

    Abstract: An aqueous polymer dispersion is prepared by radical aqueous emulsion polymerization of at least one ethylenically unsaturated monomer in the presence of a dispersant by mixing reactants at no greater than the initiation temperature and heating the mixture to a final temperature during the addition of at least one monomer. An aqueous polymer dispersion (I) is prepared by radical aqueous emulsion polymerization of at least one ethylenically unsaturated monomer in the presence of a dispersant. The process comprises: (a) mixing in a reaction vessel, at no greater than the initiation temperature, deionized water, an oil soluble radical initiator, a dispersant, optionally at least a partial amount of a monomer and optionally at least a partial amount of a water-soluble radical initiator followed by; (b) heating the mixture to the initiation temperature, followed by optionally adding; (c) additional water, oil-soluble radical initiator, dispersant and monomer with the main quantity of the water-soluble radical initiator and; (d) heating the mixture to a final temperature during the addition of at least one monomer.

    25.
    发明专利
    未知

    公开(公告)号：BR0317824A

    公开(公告)日：2005-11-29

    申请号：BR0317824

    申请日：2003-12-24

    Applicant: BASF AG

    Inventor： SCHMIDT-THUEMMES JUERGEN ,  HARTMANN JUERGEN ,  TSCHANG CHUNG-JI

    IPC: C08F212/04 ,  C08F236/04 ,  C08F257/02 ,  C08F212/08

    Abstract: The present invention provides a process for preparing a stable aqueous copolymer dispersion by free-radically initiated aqueous emulsion polymerization of a) from 19.9 to 80 parts by weight of conjugated aliphatic dienes [monomers a)], b) from 19.9 to 80 parts by weight of vinylaromatic compounds [monomers b)], c) from 0.1 to 10 parts by weight of ethylenically unsaturated carboxylic acids and/or dicarboxylic acids [monomers c)], d) from 0 to 20 parts by weight of ethylenically unsaturated carbonitriles [monomers d)], and e) from 0 to 20 parts by weight of copolymerizable compounds other than monomers b) [monomers e)], the total amount of ethylenically unsaturated monomers a) to e) being 100 parts by weight, in the presence of water and from 0.1 to 5 parts by weight, based on the total monomer amount, of emulsifiers comprising f) sulfuric monoesters of ethoxylated fatty acid alcohols and/or g) salts of esters and monoesters of alkylpolyoxyethylenesulfosuccinates, from 15 to 85% by weight of the total emulsifiers used being added within the time taken to reach up to 40% of the total conversion of the monomers a) to e), and from 1 to 50% of the carboxylic acid groups deriving from the monomers c) being neutralized by addition of base.

    27.
    发明专利
    未知

    公开(公告)号：DE59804931D1

    公开(公告)日：2002-08-29

    申请号：DE59804931

    申请日：1998-11-30

    Applicant: BASF AG

    Inventor： LEUBE F ,  SCHMIDT-THUEMMES JUERGEN ,  ZELLER EDGAR ,  MAAS HEIKO

    IPC: C08C19/02 ,  C08F8/04

    Abstract: A process for selectively hydrogenating ethylenically unsaturated double bonds in polymers P involves reacting the polymers P with hydrogen in the presence of at least one hydrogenation catalyst selected from the salts and complex compounds of rhodium and/or of ruthenium in an aqueous dispersion of the polymers P that comprises not more than 20% by volume of an organic solvent. This process can be used to give hydrogenated polymer dispersions and, from these dispersions, polymers. Also claimed are aqueous polymer dispersions comprising polymers P', which include structural units I, II and III as in claim 10, with or without structural units IV and/or V as in claim 11.

    28.
    发明专利
    未知

    公开(公告)号：BRPI0517794A

    公开(公告)日：2008-10-21

    申请号：BRPI0517794

    申请日：2005-11-05

    Applicant: BASF AG

    Inventor： SCHMIDT-THUEMMES JUERGEN ,  HAMERS CHRISTOPH

    IPC: D21H19/42

    Abstract: An aqueous paper coating slip comprising organic polymers as binders and inorganic pigments, wherein the binders are present at least partly in the form of a pigment-polymer hybrid in which the binder is chemically or physically bound to the inorganic pigments.

    29.
    发明专利
    未知

    公开(公告)号：AT366267T

    公开(公告)日：2007-07-15

    申请号：AT03795966

    申请日：2003-12-24

    Applicant: BASF AG

    Inventor： SCHMIDT-THUEMMES JUERGEN ,  HARTMANN JUERGEN ,  TSCHANG CHUNG-JI

    IPC: C08F257/02 ,  C08F212/04 ,  C08F212/08 ,  C08F236/04

    Abstract: The present invention provides a process for preparing a stable aqueous copolymer dispersion by free-radically initiated aqueous emulsion polymerization of a) from 19.9 to 80 parts by weight of conjugated aliphatic dienes [monomers a)], b) from 19.9 to 80 parts by weight of vinylaromatic compounds [monomers b)], c) from 0.1 to 10 parts by weight of ethylenically unsaturated carboxylic acids and/or dicarboxylic acids [monomers c)], d) from 0 to 20 parts by weight of ethylenically unsaturated carbonitriles [monomers d)], and e) from 0 to 20 parts by weight of copolymerizable compounds other than monomers b) [monomers e)], the total amount of ethylenically unsaturated monomers a) to e) being 100 parts by weight, in the presence of water and from 0.1 to 5 parts by weight, based on the total monomer amount, of emulsifiers comprising f) sulfuric monoesters of ethoxylated fatty acid alcohols and/or g) salts of esters and monoesters of alkylpolyoxyethylenesulfosuccinates, from 15 to 85% by weight of the total emulsifiers used being added within the time taken to reach up to 40% of the total conversion of the monomers a) to e), and from 1 to 50% of the carboxylic acid groups deriving from the monomers c) being neutralized by addition of base.

Patent Agency Ranking