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    Method for controlling growth of microorganisms and/or biofilms in an industrial process
    2.
    发明授权
    Method for controlling growth of microorganisms and/or biofilms in an industrial process 有权

    公开(公告)号：US11643782B2

    公开(公告)日：2023-05-09

    申请号：US16640069

    申请日：2018-08-28

    Applicant: Kemira Oyj

    Inventor： Jaakko Simell ,  Marko Kolari ,  Jonas Konn

    IPC: D21H21/04 ,  D21H21/36 ,  D21H17/09 ,  D21H17/14

    CPC classification number: D21H21/04 ,  D21H17/09 ,  D21H17/14 ,  D21H21/36

    Abstract: Disclosed is a method for controlling a biofilm removing a formed biofilm and/or controlling a growth of microorganisms, preferably bacteria, in an aqueous environment of an industrial manufacturing process including a cellulosic fibre material. A compound according to Formula I is administered to the aqueous environment, in which Formula I R1, R2 and R3 independently represent a hydrogen atom; halogen atom; hydroxy group; amino group; alkylamino group, alkyl group, hydroxyalkyl group, haloalkyl group or alkoxy group having 1 to 4 carbon atoms; or an acylamido group having 1 to 10 carbon atoms; and A represents 2-thiazolamine; 2-propenenitrile; 2-propenoic acid; alkyl ester or hydroxyalkyl ester of 2-propenoic acid having 1 to 4 carbon atoms; or —CHCHCONR5R6 group, where R5 and R6 represent independently hydrogen atom, alkyl or hydroxyalkyl having 1 to 4 carbon atoms, with the proviso that the compound according to Formula I is not 3-[(4-methylphenyl)sulphonyl]-2-propenenitrile or 4-amino-N-2-thiazolyl-benzenesulphonamide.

    Dry strength composition, its use and method for making of paper, board or the like
    6.
    发明授权
    Dry strength composition, its use and method for making of paper, board or the like 有权

    公开(公告)号：US11427965B2

    公开(公告)日：2022-08-30

    申请号：US16969992

    申请日：2019-01-18

    Applicant: Kemira Oyj

    Inventor： Matti Hietaniemi ,  Asko Karppi ,  Jonas Konn

    IPC: D21H21/20 ,  D21F11/00 ,  D21H17/00 ,  D21H17/29 ,  D21H23/04

    Abstract: A dry strength composition for manufacture of paper, board or the like is disclosed. The dry strength composition includes, as a mixture, at least one anionically derivatized polysaccharide, and cationic starch having an amylopectin content ≥80 weight-%. The anionically derivatized polysaccharide and the cationic starch provide the composition with a charge density in a range of 0.1-1.5 meq/g, when measured at pH 2.8, and −0.1-−3 meq/g, preferably −0.3-−2.5 meq/g, more preferably −0.5-−2.0 meq/g, when measured as an aqueous solution, at pH 7.0. Further disclosed are a use of the composition and a method for manufacturing paper, board or the like.

    Method for controlling growth of microorganisms and/or biofilms in an industrial process
    7.
    发明申请
    Method for controlling growth of microorganisms and/or biofilms in an industrial process 有权

    公开(公告)号：US20220056641A2

    公开(公告)日：2022-02-24

    申请号：US16640069

    申请日：2018-08-28

    Applicant: Kemira Oyj

    Inventor： Jaakko Simell ,  Marko Kolari ,  Jonas Konn

    IPC: D21H21/04 ,  D21H21/36 ,  D21H17/09 ,  D21H17/14

    Abstract: Disclosed is a method for controlling a biofilm, removing a formed biofilm and/or controlling a growth of microorganisms, preferably bacteria, in an aqueous environment of an industrial manufacturing process including a cellulosic fibre material. A compound according to Formula I is administered to the aqueous environment, in which Formula I R1, R2 and R3 independently represent a hydrogen atom; halogen atom; hydroxy group; amino group; alkylamino group, alkyl group, hydroxyalkyl group, haloalkyl group or alkoxy group having 1 to 4 carbon atoms; or an acylamido group having 1 to 10 carbon atoms; and A represents 2-thiazolamine;
    2-propenenitrile; 2-propenoic acid; alkyl ester or hydroxyalkyl ester of 2-propenoic acid having 1 to 4 carbon atoms; or —CHCHCONR5R6 group, where R5 and R6 represent independently hydrogen atom, alkyl or hydroxyalkyl having 1 to 4 carbon atoms, with the proviso that the compound according to Formula I is not 3-[(4-methylphenyl)sulphonyl]-2-propenenitrile or 4-amino-N-2-thiazolyl-benzene-sulphonamide.

    Dry strength composition, its use and method for making of paper, board or the like
    8.
    发明申请
    Dry strength composition, its use and method for making of paper, board or the like 有权

    公开(公告)号：US20210102343A1

    公开(公告)日：2021-04-08

    申请号：US16969992

    申请日：2019-01-18

    Applicant: Kemira Oyj

    Inventor： Matti Hietaniemi ,  Asko Karppi ,  Jonas Konn

    IPC: D21H21/20 ,  D21H17/00 ,  D21H17/29 ,  D21H23/04 ,  D21F11/00

    Abstract: A dry strength composition for manufacture of paper, board or the like is disclosed. The dry strength composition includes, as a mixture, at least one anionically derivatized polysaccharide, and cationic starch having an amylopectin content ≥80 weight-%. The anionically derivatized polysaccharide and the cationic starch provide the composition with a charge density in a range of 0.1-1.5 meq/g, when measured at pH 2.8, and −0.1-−3 meq/g, preferably −0.3-−2.5 meq/g, more preferably −0.5-−2.0 meq/g, when measured as an aqueous solution, at pH 7.0. Further disclosed are a use of the composition and a method for manufacturing paper, board or the like.

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