中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

20 records (took 0.023 seconds)

    1.
    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.

    5.
    发明专利
    未知

    公开(公告)号：DE19638594A1

    公开(公告)日：1998-03-26

    申请号：DE19638594

    申请日：1996-09-20

    Applicant: BASF AG

    Inventor： LINHART FRIEDRICH DR ,  NIESSNER MANFRED DR ,  RUEBENACKER MARTIN DR ,  NILZ CLAUDIA DR

    IPC: B01J20/26 ,  C02F1/28 ,  C08F8/12 ,  D21C5/02 ,  D21C11/00 ,  D21F1/66 ,  C08F226/02 ,  D21C9/08

    Abstract: This invention concerns a process for cleaning wastewater and recirculating water in paper production, de-inking and bleaching of pulp. This process involves adsorption of water-soluble anionic compounds and compounds dispersed in water from the wastewater and recirculating water onto fine-particle adsorption agents consisting of insoluble polymers which swell to a very limited extent and contain vinylamine units which have been incorporated by polymerization. This invention further concerns the use of these polymers as adsorption agents for cleaning water recirculation systems in the production of paper and for cleaning paper machine wastewater and discharge from the de-inking process and from pulp bleaching.

    6.
    发明专利
    未知

    公开(公告)号：DE4237439A1

    公开(公告)日：1994-05-11

    申请号：DE4237439

    申请日：1992-11-06

    Applicant: BASF AG

    Inventor： HARTMANN HEINRICH DR ,  DENZINGER WALTER ,  KROENER MICHAEL DR ,  NILZ CLAUDIA DR

    IPC: C08F8/00 ,  B01D15/04 ,  B01J20/26 ,  B01J39/20 ,  C08F226/02 ,  C08F26/02 ,  C08L39/02 ,  C08J5/20 ,  B01J20/30 ,  B01D15/00 ,  C02F1/28 ,  C02F1/62 ,  C02F1/42

    Abstract: Insoluble, slightly-swelling polymers containing amino groups obtainable from popcorn polymers which contain units of structure (I), in which R, R = H or C1 to C4 alkyl, by the separation of the R-CO- group from at least 2 % of the monopolymerised units of structure (I) with the formation of units of structure (II), process for producing the amino group-containing popcorn polymers by the polymerisation of N-vinyl carboxylic acid amides and possibly other monoethylenically unsaturated monomers copolymerisable therewith containing 0.1 to 10 % wt. in relation to the monomers used in polymerisation of an at least two-ethylenically unsaturated unconjugated double-bond-containing compound as the cross-linking agent with the exclusion of oxygen, and polymerisation initiators to form popcorn polymers and the separation of formyl groups from at least 2 % of the polymerised N-vinyl carboxylic acid amides and use of the insoluble, slightly-swelling polymers with amino groups as an ion exchangers or adsorber resins for metal ions.

    Surface treatment of surfaces requiring metal coating to make e.g. automotive parts or circuit boards
    8.
    发明专利
    Surface treatment of surfaces requiring metal coating to make e.g. automotive parts or circuit boards 未知

    公开(公告)号：DE19639898A1

    公开(公告)日：1998-04-02

    申请号：DE19639898

    申请日：1996-09-27

    Applicant: BASF AG

    Inventor： BRODT GREGOR DR ,  NILZ CLAUDIA DR ,  RUEBENACKER MARTIN DR

    IPC: B05D5/06 ,  C23C18/20 ,  H05K3/38 ,  C25D5/54 ,  B05D7/26

    Abstract: The use of conditioning agents (I) for treating non-metallic surfaces is claimed. (I) comprise polymers consisting of the following monomers :(A) 0.1-100 mol.% vinyl amine; (B) 0-99.9 mol.% other monoethylenically unsaturated monomers ; and (C) 0-5 mol.% monomers with at least two ethylenically unsaturated, non-conjugated double bonds. Also claimed are (i) the surface treatment of non-metallic surfaces by conditioning with these agents; (ii) the preparation of mouldings with metallised surfaces by treating the non-metallic surface of a moulding with one of these agents and then metallising the conditioned surface; and (iii) conditioning baths containing 0.01-5 (0.1-1) wt.% of these agents.

    9.
    发明专利
    未知

    公开(公告)号：DE19636883A1

    公开(公告)日：1998-03-12

    申请号：DE19636883

    申请日：1996-09-11

    Applicant: BASF AG

    Inventor： UTECHT JENS DR ,  RUEBENACKER MARTIN DR ,  NILZ CLAUDIA DR ,  RAHM RAINER DR

    IPC: B01J20/26 ,  B01J45/00 ,  C08F8/00 ,  C08F26/00 ,  B01D15/08

    Abstract: The invention concerns insoluble polymers which can swell only slightly and contain units of formula (I) and/or (II), in which R is H, C1-C6 alkyl; R , R are H, C1-C20 alkyl, aryl, aralkyl; and ME is H, alkali metal, alkaline earth metal or ammonium equivalent. The invention also concerns processes for preparing these polymers by reacting insoluble polymers which can only swell slightly and contain units of formula (III), in which R is H or C1-C6 alkyl, with (1) alpha -haloacids or their alkali metal, alkaline earth metal or ammonium salts, or (2) aldehydes and hydrogen cyanide or alkali cyanide, or cyanohydrins comprising aldehydes and alkali cyanide, and hydrolyzing the adducts. The invention further concerns the use of these polymers as adsorber resin for metallic ions and as ion exchangers.

Patent Agency Ranking