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    2.
    发明专利
    未知

    公开(公告)号：DE19515943A1

    公开(公告)日：1996-11-07

    申请号：DE19515943

    申请日：1995-05-02

    Applicant: BASF AG

    Inventor： DENZINGER WALTER ,  RUEBENACKER MARTIN DR ,  NILZ CLAUDIA DR ,  LORENCAK PRIMOZ DR ,  MOENCH DIETMAR DR ,  SCHUHMACHER RUDOLF DR ,  STANGE ANDREAS DR

    IPC: C08B31/12 ,  C08F8/12 ,  C08F283/00 ,  C08F283/06 ,  C09B67/46 ,  C09D17/00 ,  D21H17/34 ,  D21H17/53 ,  D21H19/20 ,  D21H21/10 ,  D21H21/16 ,  D21H21/18 ,  C08F8/00 ,  C09B67/20 ,  D21H17/46 ,  D21H21/20

    Abstract: Graft polymers are obtained by radically initiated polymerisation of (A) monomers or monomer mixtures of (a) 10 to 100 % by weight N-vinyl carboxylic acid amides having the formula (I), in which R stands for R and C1-C6 alkyl, (b) 0 to 90 % by weight other monoethylenically unsaturated monomers that may be copolymerised with monomers (a), and (c) 0 to 5 % by weight of at least two ethylenically unsaturated monomers that contain non-conjugated double bonds in their molecule, in the presence of (B) polymers that contain at least 3 units of a C2-C4 alkylene oxide and/or polytetrahydrofuranes, in a weight ratio (A):(B) equal to (95 to 10):(5 to 80). The group (IV) is then optionally separated from the polymerised monomer (a) of the graft polymer, forming at least units having the formula (1). Also disclosed are a process for preparing said graft polymers and their use as dry and wet strength-increasing agents, as fixatives for impurities and fillers, as retention and dewatering agents for paper-making, as promoters during paper, cardboard and paperboard diketen gluing, as pigment dispersants, as starch cationising agents and as auxiliary substances for producing paper tissues.

    4.
    发明专利
    未知

    公开(公告)号：DE4127719A1

    公开(公告)日：1993-02-25

    申请号：DE4127719

    申请日：1991-08-22

    Applicant: BASF AG

    Inventor： WEGNER BRIGITTE DR ,  OPPENLAENDER KNUT DR ,  SCHUHMACHER RUDOLF DR ,  HOHMANN ANDREAS DR ,  DRALLE GABRIELE DR

    IPC: C09K23/00 ,  B01J13/00 ,  C09K23/42 ,  D21C3/28 ,  D21D1/20 ,  D21H17/00 ,  D21H17/14 ,  D21H21/12

    Abstract: In anti-foams for the paper industry, based on oil-in-water emulsions, the oil phase makes up 5 to 50 % by weight of the bulk of the emulsion and contains (a) an alcohol having at least 12 carbon atoms, fatty acid esters of alcohols having at least 22 carbon atoms and C1- to C36-carboxylic acids, distillation residues which are obtainable in the production of alcohols having a higher carbon number by oxo synthesis or by the Ziegler process and which may be alkoxylated, mixtures of the said compounds and/or (b) a fatty acid ester of C12- to C22-carboxylic acids with monohydric to trihydric C1- to C18-alcohols and, if appropriate, (c) a hydrocarbon having a boiling point above 200 DEG C or fatty acids having 12 to 22 carbon atoms in combination with (d) 1 to 80 % by weight of polyglycerol esters which can be prepared by an at least 20% esterification of polyglycerol mixtures which contain, as essential constituents, diglycerol, triglycerol, tetraglycerol and, if appropriate, more highly condensed polyglycerols, with saturated or unsaturated C12- to C36-fatty acids. i

    5.
    发明专利
    未知

    公开(公告)号：DE19537088A1

    公开(公告)日：1997-04-10

    申请号：DE19537088

    申请日：1995-10-05

    Applicant: BASF AG

    Inventor： LINHART FRIEDRICH DR ,  AUHORN WERNER ,  HAEBERLE KARL DR ,  SCHUHMACHER RUDOLF DR ,  DYLLICK-BRENZINGER RAINER DR

    IPC: D21H17/08 ,  D21H17/45 ,  D21H21/18 ,  D21H17/34 ,  C08F226/00 ,  D21H17/57

    Abstract: A process is disclosed for producing paper with a dry-strength and wet-strength finish by adding to the paper pulp combinations of hydrophilically modified polyisocyanates and polymers containing vinyl amine units, then by dewatering the paper pulp to form sheets of paper, or by treating the paper surface with hydrophilically modified polyisocyanates and polymers containing vinyl amine units. Also disclosed is the use of said combinations of polyisocyanates and polymers as dry-strengthening and wet-strengthening agents of hygienic and kraft papers.

    8.
    发明专利
    未知

    公开(公告)号：DE4411311A1

    公开(公告)日：1995-10-05

    申请号：DE4411311

    申请日：1994-03-31

    Applicant: BASF AG

    Inventor： NILZ CLAUDIA DR ,  WINTER MANFRED ,  KROENER MICHAEL DR ,  STANGE ANDREAS DR ,  SCHUHMACHER RUDOLF DR

    IPC: C08F8/12 ,  D21H17/34 ,  D21H21/18 ,  D21H21/20 ,  C08F126/02

    Abstract: A process for producing long-shelf-life aqueous solutions of vinyl-amine-unit-containing polymers by the hydrolysis of N-vinyl-carbonamide-containing polymers with acids in an aqueous medium and removing the carboxylic acids separated from the polymers as esters from the aqueous polymer solution following hydrolysis and by the addition of at least stoichiometric quantities of at least one C1 to C6 alcohol and distilling the esters off from the reaction mixture. The invention also relates to the use of the long-shelf-life aqueous solutions of vinyl-amine-unit-containing polymers as dry and wet consolidating agents in paper manufacture.

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