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    11.
    发明专利
    未知

    公开(公告)号：AT162811T

    公开(公告)日：1998-02-15

    申请号：AT95912254

    申请日：1995-03-20

    Applicant: BASF AG

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

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

    Abstract: PCT No. PCT/EP95/01030 Sec. 371 Date Sep. 30, 1996 Sec. 102(e) Date Sep. 30, 1996 PCT Filed Mar. 20, 1995 PCT Pub. No. WO95/26989 PCT Pub. Date Oct. 12, 1995Solutions of polymers containing vinylamine units, which solutions have a long shelf life, are prepared by hydrolyzing polymers containing N-vinylcarboxamide units with acids in an aqueous medium and removing the carboxylic acids eliminated from the polymers as esters from the aqueous polymer solution after the hydrolysis by adding at least stoichiometric amounts of at least one C1-C6-alcohol and distilling off the esters from the reaction mixture, and said aqueous solutions are used as dry and wet strength agents in papermaking.

    14.
    发明专利
    未知

    公开(公告)号：DK0758344T3

    公开(公告)日：1998-03-02

    申请号：DK95912254

    申请日：1995-03-20

    Applicant: BASF AG

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

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

    Abstract: PCT No. PCT/EP95/01030 Sec. 371 Date Sep. 30, 1996 Sec. 102(e) Date Sep. 30, 1996 PCT Filed Mar. 20, 1995 PCT Pub. No. WO95/26989 PCT Pub. Date Oct. 12, 1995Solutions of polymers containing vinylamine units, which solutions have a long shelf life, are prepared by hydrolyzing polymers containing N-vinylcarboxamide units with acids in an aqueous medium and removing the carboxylic acids eliminated from the polymers as esters from the aqueous polymer solution after the hydrolysis by adding at least stoichiometric amounts of at least one C1-C6-alcohol and distilling off the esters from the reaction mixture, and said aqueous solutions are used as dry and wet strength agents in papermaking.

    17.
    发明专利
    未知

    公开(公告)号：DE102005057897A1

    公开(公告)日：2007-06-06

    申请号：DE102005057897

    申请日：2005-12-02

    Applicant: BASF AG

    Inventor： DUPUIS JACQUES ,  HOFFMANN REINHARD ,  WINKLER EKHARD ,  WINTER MANFRED

    IPC: C07C303/24

    Abstract: Process for the preparation of sulfuric acid monoesters of aminoalkanols by reacting sulfuric acid with aminoalkanols and removing the water forming in the reaction from the reaction mixture, sulfuric acid and at least one aminoalkanol being mixed and the hot reaction mixture forming being passed with turbulent flow into a container and being quenched therein with a fluid.

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