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    MODIFICATION OF STARCH WITH CATIONIC POLYMERS AND USE OF MODIFIED STARCHES AS PAPER DRY STRENGTH ENHANCER
    72.
    发明专利
    MODIFICATION OF STARCH WITH CATIONIC POLYMERS AND USE OF MODIFIED STARCHES AS PAPER DRY STRENGTH ENHANCER 未知

    公开(公告)号：CA2367317A1

    公开(公告)日：2000-10-12

    申请号：CA2367317

    申请日：2000-03-23

    Applicant: BASF AG

    Inventor： DIEHL KURT ,  MAHR NORBERT ,  STANGE ANDREAS ,  LORENCAK PRIMOZ

    IPC: C08B31/00 ,  C08B31/18 ,  C08G81/00 ,  C08L3/00 ,  C08L3/02 ,  C08L3/04 ,  C08L3/10 ,  D21H17/28 ,  D21H17/29 ,  D21H17/44 ,  D21H17/45 ,  D21H21/10 ,  D21H21/18 ,  D21H21/20

    Abstract: The invention relates to a method for modifying starch by heating the starch in an aqueous medium to temperatures greater than the pasting temperature of the starch in the presence of (a) a polymer cationization agent selected fro m the group consisting of polymers with molecular weights up to 1 million containing vinylamine units, polyethylene imines, polydiallyldimethylammoniu m chlorides, condensates of dimethylamine with epichlorohydrin or dichloroalkanes, condensates of dichloroethane and ammonia and mixtures of t he above mentioned compounds, and (b) polymer dehydrators for paper selected fr om the group consisting of water-soluble, crosslinked polyamidoamines that are optionally grafted with ethylene imine, polymers with molecular weights of greater than 1 million containing acrylamide and/or methacrylamide units, polymers with molecular weights of greater than 1 million containing vinylamine units and mixtures of said compounds. The invention also relates to the reaction products obtained by the inventive method and the use of the reaction products as dry-strength agents in the production of paper, board a nd paperboard.

    Use of water-soluble polymers as biocides
    76.
    发明专利
    Use of water-soluble polymers as biocides 未知

    公开(公告)号：AU9536698A

    公开(公告)日：1999-03-29

    申请号：AU9536698

    申请日：1998-09-05

    Applicant: BASF AG

    Inventor： TROPSCH JURGEN ,  ZELLER DIETER ,  NEGELE ANTON ,  MAHR NORBERT ,  DECKER JURGEN

    IPC: A01N37/36

    Abstract: The use of polymers comprising as essential structural elements units of the formula I and/or IIin whichR1 is H, alkyl, cycloalkyl, aryl or aralkyl,R2 and R3 independently of one another are defined as for R1 or are selected from substituted alkyl, substituted cycloalkyl, substituted aryl or substituted aralkyl, the substituents being selected from OH, O-alkyl, O-aryl, SH, S-alkyl, S-aryl, NH2, NH-alkyl, NH-aryl, N(alkyl)2, in protonated form if desired,N(alkyl)3+Z31 , where Z is the radical of an organic or inorganic acid, COOH, COO-alkyl, CONH2, CONH-alkyl, CON(alkyl)2, CN and SO3H; andthe indices x in each case independently of one another are an integer from 1 to 20,and their corresponding acid addition salts as biocides.

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