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    3.
    发明专利
    未知

    公开(公告)号：AT283872T

    公开(公告)日：2004-12-15

    申请号：AT99971821

    申请日：1999-10-30

    Applicant: BASF AG

    Inventor： NEGELE ANTON ,  GAUWEILER WERNER ,  MEIXNER HUBERT ,  MAHR NORBERT ,  RUEBENACKER MARTIN

    IPC: C09K23/52 ,  C08F2/22 ,  C08F8/12 ,  C08F26/02 ,  C08L39/00 ,  C08L101/12 ,  D21H17/37 ,  D21H17/45 ,  D21H21/10 ,  D21H21/18 ,  D21H21/20

    Abstract: Aqueous dispersions of water-soluble polymers of N-vinylcarboxamides contain, based on 100 parts of water, (A) from 5 to 80 parts by weight of water-soluble polymer containing N-vinylformamide units and/or N-vinylacetamide units and having particle sizes of from 50 nm to 2 mum and (B) from 1 to 50 parts by weight of at least one polymeric dispersant which is incompatible with the water-soluble polymers (A) in aqueous solution, which dispersions are prepared by polymerizing (A) from 5 to 80 parts by weight of N-vinylformamide and/or N-vinylacetamide, if desired together with other monoethylenically unsaturated monomers which form water-soluble polymers therewith, and (B) from 1 to 50 parts by weight of at least one polymeric dispersant which is incompatible with the polymers, formed from the monomers (A), in aqueous solution, in 100 parts by weight of water, at from 30 to 95° C. in the presence of from 0.001 to 5.0% by weight, based on the monomers used, and the aqueous dispersions of water-soluble polymers are used as drainage aids, flocculants and retention aids and as wet and dry strength agents and as fixing compositions in papermaking.

    5.
    发明专利
    未知

    公开(公告)号：ES2151296T3

    公开(公告)日：2000-12-16

    申请号：ES97952902

    申请日：1997-12-09

    Applicant: BASF AG

    Inventor： AUHORN WERNER ,  MONCH DIETMAR ,  DYLLICK-BRENZINGER RAINER ,  SCHOLZ RAINER ,  BLUM RAINER ,  MEIXNER HUBERT

    IPC: D21H23/04 ,  D21F1/08 ,  D21H17/37 ,  D21H17/54 ,  D21H21/10 ,  D21H23/24

    Abstract: PCT No. PCT/EP97/06857 Sec. 371 Date Jan. 27, 1999 Sec. 102(e) Date Jan. 27, 1999 PCT Filed Dec. 9, 1997 PCT Pub. No. WO98/29603 PCT Pub. Date Jul. 9, 1998Paper is produced by draining a paper stock containing process chemicals on a paper machine, a main stream of the paper stock and a dilution stream which consists of white water, contains at least 5% by weight of the process chemicals and amounts to 5-35% by volume of the total head box feed being fed via a head box to the paper machine wire. The papers thus produced have an excellent formation profile and an outstanding ash distribution.

    6.
    发明专利
    未知

    公开(公告)号：ES2140954T3

    公开(公告)日：2000-03-01

    申请号：ES97900557

    申请日：1997-01-03

    Applicant: BASF AG

    Inventor： STEUERLE ULRICH ,  MEIXNER HUBERT ,  DYLLICK-BRENZINGER RAINER ,  REUTHER WOLFGANG ,  KANTER HARTMUT ,  HETTCHE ALBERT

    IPC: A61K8/72 ,  A61K8/84 ,  A61K8/91 ,  A61Q5/12 ,  A61Q19/00 ,  B01D21/01 ,  B01D61/14 ,  B01D61/58 ,  B01D63/02 ,  B01D63/06 ,  B01D63/08 ,  B01D63/10 ,  C08G73/00 ,  C08G73/02 ,  D21H17/54 ,  D21H17/56 ,  D21H21/10 ,  D21H21/16

    Abstract: PCT No. PCT/EP97/00009 Sec. 371 Date Jul. 6, 1998 Sec. 102(e) Date Jul. 6, 1998 PCT Filed Jan. 3, 1997 PCT Pub. No. WO97/25367 PCT Pub. Date Jul. 17, 1997A process for the preparation of water-soluble, amino-containing condensates and adducts having a greater drainage and retention effect in papermaking, in which from 5 to 95% by weight of the condensates or adducts are separated off as permeate from solutions of water-soluble, amino-containing condensates or adducts by ultrafiltration through membranes and the amino-containing condensates or adducts having improved efficiency are, if required, isolated from the retentate, and the high molecular weight polymer fractions contained in the retentate are used as retention aids, drainage aids and fixing compositions in papermaking, as promoters in the sizing of paper with alkyldiketenes, as flocculants for sewage sludges, as adhesion promoters in the production of laminated films, as additives for hair and skincare compositions and as compositions for immobilizing anionic active ingredients.

    7.
    发明专利
    未知

    公开(公告)号：AT187976T

    公开(公告)日：2000-01-15

    申请号：AT97921715

    申请日：1997-04-23

    Applicant: BASF AG

    Inventor： STEUERLE ULRICH ,  REUTHER WOLFGANG ,  MEIXNER HUBERT ,  EHLE MICHAEL ,  GREINDL THOMAS ,  BETZ RAINER

    IPC: B01J45/00 ,  B01J20/22 ,  C02F1/56 ,  C08G73/02 ,  C08G73/04

    Abstract: PCT No. PCT/EP97/02062 Sec. 371 Date Oct. 22, 1998 Sec. 102(e) Date Oct. 22, 1998 PCT Filed Apr. 23, 1997 PCT Pub. No. WO97/40088 PCT Pub. Date Oct. 30, 1997Process for preparing fine-particle, water-insoluble polymers of aziridines by polymerizing aziridines, preferably ethylenimine, in the presence of crosslinkers which contain at least two functional groups, and in at least one ether, and also modified, water-insoluble polymers of aziridines which can be obtained by reacting fine-particle, water-insoluble, crosslinked polymers of aziridines, in aqueous medium, with carbon disulfide or formaldehyde and a nucleophilic agent from the group consisting of alkali metal cyanides, primary amines, secondary amines, alkali metal sulfites and alkali metal phosphites, and use of the modified and non-modified fine-particle, water-insoluble polymers for immobilizing active compounds, as absorbents for aldehydes, ketones and acids, and also for removing heavy metal ions from wastewaters.

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