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    51.
    发明专利
    未知

    公开(公告)号：NO802543L

    公开(公告)日：1981-03-02

    申请号：NO802543

    申请日：1980-08-28

    Applicant: BASF AG

    Inventor： HERTEL OTTO ,  SCHARF EMIL ,  MELZER JAROSLAV ,  FIKENTSCHER ROLF

    IPC: C08G69/48 ,  C08G81/00 ,  D21H17/55 ,  D21H17/56 ,  C08G

    Abstract: Process for the production of water-soluble auxiliaries for the papermaking industry by reacting (a) 1 part by weight of a polyamidoamine obtained by condensing 1 mole of a dicarboxylic acid having from 4 to 10 carbon atoms with from 0.8 to 1.4 moles of a polyalkylene polyamine having from 3 to 10 alkyleneamine units and containing up to 8 ethyleneimine units per basic nitrogen atom with (b) 0.1 to 4 parts by weight of an alpha , omega -dichloro polyalkylene oxide obtained by reacting a polyalkylene oxide having from 8 to 100 alkylene oxide units with a compound selected from the group consisting of a thionyl chloride and phosgene and then cleaving the reaction products by heating them to a temperature of from 70 DEG to 150 DEG C. in the presence of a tertiary amine as catalyst, as crosslinking agent, at a temperature above 20 DEG C. in aqueous solution or in a water-soluble organic solvent, the reaction being carried out to a point at which the viscosity of an aqueous solution containing 20% by weight of auxiliary is from 300 to 2,500 mPas.

    53.
    发明专利
    未知

    公开(公告)号：DE59805005D1

    公开(公告)日：2002-09-05

    申请号：DE59805005

    申请日：1998-04-02

    Applicant: BASF AG

    Inventor： LINHART FRIEDRICH ,  MELZER JAROSLAV ,  MEIXNER HUBERT

    IPC: D21H17/56 ,  D21H21/02

    Abstract: Paper, board and cardboard are produced from paper stocks which contain tacky impurities by the addition of surfactants and cationic polymers having a charge density of at least 1.5 meq/g (measured at pH 7) and a molar mass Mw of the cationic polymers of at least 15,000 and drainage of the paper stocks with fixation of the tacky impurities in the paper produced.

    54.
    发明专利
    未知

    公开(公告)号：AT221595T

    公开(公告)日：2002-08-15

    申请号：AT98922636

    申请日：1998-04-02

    Applicant: BASF AG

    Inventor： LINHART FRIEDRICH ,  MELZER JAROSLAV ,  MEIXNER HUBERT

    IPC: D21H17/56 ,  D21H21/02

    Abstract: Paper, board and cardboard are produced from paper stocks which contain tacky impurities by the addition of surfactants and cationic polymers having a charge density of at least 1.5 meq/g (measured at pH 7) and a molar mass Mw of the cationic polymers of at least 15,000 and drainage of the paper stocks with fixation of the tacky impurities in the paper produced.

    56.
    发明专利
    未知

    公开(公告)号：DK170762B1

    公开(公告)日：1996-01-15

    申请号：DK730888

    申请日：1988-12-30

    Applicant: BASF AG

    Inventor： CLERCQ ARNOLD DE ,  BERGOLD WOLFRAM ,  DEGEN HANS-JUERGEN ,  MELZER JAROSLAV

    IPC: B01D19/04

    Abstract: Defoamers in which the oil phase of the emulsions contains… (a) a C12- to C26-alcohol, distillation residues obtainable during the production of alcohols with a relatively high carbon number by oxo synthesis or by the Ziegler process and which may also be alkoxylated, and/or… (b) a fatty acid ester of C12- to C22- carboxylic acids with a mono- to tri-hydric C1- to C18-alcohol and optionally… (c) a hydrocarbon having a boiling point above 200 DEG C or fatty acids having 12 to 22 carbon atoms,… comprises 5 to 50% by weight of the make-up of the emulsion and has a mean particle size of less than 25 mu m, and in which 5 to 50 % by weight of the components (a) and (b) of the oil phase are replaced by… (d) at least one compound melting at a temperature above 70 DEG C selected from the group of fatty alcohols having at least 28 C atoms, the esters of a C1- to C22-carboxylic acid with an alcohol having at least 28 C atoms, the polyethylene waxes having a molecular weight of at least 2000, the carnauba waxes, the montanic ester waxes and the montanic acid waxes and their salts.

    58.
    发明专利
    未知

    公开(公告)号：DE3484748D1

    公开(公告)日：1991-08-01

    申请号：DE3484748

    申请日：1984-12-18

    Applicant: BASF AG

    Inventor： BERGOLD WOLFRAM DR ,  MELZER JAROSLAV

    IPC: B01D19/04

    Abstract: In antifoams based on oil-in-water emulsions, the oil phase of the emulsion contains (a) C12-C26-alcohols, distillation residues obtained in the preparation of alcohols by an oxosynthesis or by the Ziegler process and/or (b) fatty acid esters of C12-C22-carboxylic acids with monohydric, dihydric or trihydric C1-C18-alcohols, with or without (c) a hydrocarbon having a boiling point above 200 DEG C. or fatty acids of 12 to 22 carbon atoms, constitutes from 15 to 60% by weight of the emulsion and has a mean droplet size of from 0.5 to 15 mu m. The emulsions are stabilized by the addition of from 0.05 to 0.5% by weight, based on the total emulsion, of a high molecular weight water-soluble homopolymer or copolymer of acrylic acid, methacrylic acid, acrylamide or methacrylamide.

    60.
    发明专利
    未知

    公开(公告)号：FI893232A

    公开(公告)日：1990-01-07

    申请号：FI893232

    申请日：1989-07-03

    Applicant: BASF AG

    Inventor： HEMEL RALF ,  MELZER JAROSLAV

    IPC: D21H23/08 ,  D21F7/06 ,  D21H23/12 ,  D21D

    Abstract: The maximum amounts of the retention-influencing variable stock components which can be added are determined as a function of a predetermined degree of flocculation and typical values of the stock suspension with the aid of a mathematical relationship, and control signals for metering retention aids are derived from the amounts so that the greatest possible retention can be achieved without exceeding a set-point for the degree of flocculation.

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