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    11.
    发明专利
    未知

    公开(公告)号：DE102005025374A1

    公开(公告)日：2006-12-07

    申请号：DE102005025374

    申请日：2005-05-31

    Applicant: BASF AG

    Inventor： MAHR NORBERT ,  MECK DIETER ,  BLUM RAINER ,  HEMEL RALF ,  GISPERT NORBERT ,  SCHMIDT-THUEMMES JUERGEN ,  HAMERS CHRISTOPH

    IPC: D21H17/69 ,  D21H17/21 ,  D21H17/34

    Abstract: Process for the production of filler-containing papers and filler-containing paper products by addition of an aqueous suspension of at least one finely divided polymer-pigment hybrid to a paper stock and drainage of the paper stock with sheet formation, the polymer-pigment hybrid being obtainable by milling an aqueous suspension of at least one inorganic pigment in the presence of at least one binder and, if appropriate, by drying the aqueous suspension thus obtainable and redispersing the dried polymer-pigment hybrid in water, and the use of the polymer-pigment hybrids thus obtainable as a filler for the production of filler-containing paper or filler-containing paper products.

    12.
    发明专利
    未知

    公开(公告)号：DE10322787A1

    公开(公告)日：2004-12-09

    申请号：DE10322787

    申请日：2003-05-19

    Applicant: BASF AG

    Inventor： PAKUSCH JOACHIM ,  KOPPERS MARKUS ,  GASCHLER WOLFGANG ,  SACK HEINRICH ,  SCHMIDT-THUEMMES JUERGEN ,  DENU HANS-JUERGEN

    IPC: C04B24/26 ,  C08F6/00 ,  C08J3/12 ,  C08J3/16 ,  C09D5/12 ,  C08F6/06

    Abstract: A process for preparing a polymer powder by evaporating the volatile constituents from an aqueous dispersion of a film-forming polymer P, wherein prior to the evaporation of the volatile constituents the aqueous polymer dispersion still comprises drying assistants T, present in an amount of from 0.1 to 80% by weight, based on the polymer P of the dispersion, and there being used as drying assistant T polyvinylformamide. The polyvinylformamide used preferably has a K value (KW), determined by the method of Fikentscher in accordance with DIN 53726, of from 5 to 50.

    16.
    发明专利
    未知

    公开(公告)号：AT376003T

    公开(公告)日：2007-11-15

    申请号：AT04740777

    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.

    17.
    发明专利
    未知

    公开(公告)号：DE50307631D1

    公开(公告)日：2007-08-16

    申请号：DE50307631

    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.

    18.
    发明专利
    未知

    公开(公告)号：NO20072181L

    公开(公告)日：2007-05-07

    申请号：NO20072181

    申请日：2007-04-27

    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.

    20.
    发明专利
    未知

    公开(公告)号：DE10158652A1

    公开(公告)日：2003-06-12

    申请号：DE10158652

    申请日：2001-11-30

    Applicant: BASF AG

    Inventor： KOPPERS MARKUS ,  SCHMIDT MARCO ,  ANSELMANN THOMAS ,  SCHMIDT-THUEMMES JUERGEN ,  ZOTT MIKE ,  WISTUBA ECKEHARDT

    IPC: C08K3/10 ,  C08F212/04 ,  C08F220/00 ,  C08F236/04 ,  C08F236/10 ,  C08L25/10 ,  C09D125/08 ,  C08F212/08 ,  C08F212/12 ,  C09D5/34 ,  C09D133/10

    Abstract: An aqueous polymer dispersion with a polymerisate in disperse distribution in a radically polymerized form is synthesized from at least one vinyl aromatic monomer A; a doubly conjugated ethylenically unsaturated monomer B; and a monomer C selected from alpha, beta-monoethylenically unsaturated mono- and dicarboxylic acids or their amide or ester derivatives. An aqueous polymer dispersion with a polymerisate in disperse distribution in a radically polymerized form synthesized from (wt.%): at east one vinyl aromatic monomer (monomer A)(20-65); at least one doubly conjugated ethylenically unsaturated double bonded monomer (monomer B)(30-75); and at least one other monomer (monomer C)(0.5-10) selected from alpha,beta-monoethylenically unsaturated mono- and dicarboxylic acids or their amide or ester derivatives, and their content GA of alkali metal ion, relative to the weight of dispersed polymerisate is ≥ 0.5 wt.% , where the pH of the aqueous dispersion medium is set at a value lower than 6 is new. An Independent claim is included for preparation of the aqueous polymer dispersion by radical emulsion polymerization of the starting monomers A, B, and C in the required ratios for production of the polymer, with setting of the pH of the aqueous dispersion medium at below 6 by addition of a specific amount of aqueous alkali metal hydroxide solution.

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