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    31.
    发明专利
    未知

    公开(公告)号：NO166736C

    公开(公告)日：1991-08-28

    申请号：NO860919

    申请日：1986-03-11

    Applicant: BASF AG

    Inventor： HIRSCH GUENTER ,  AUHORN WERNER

    IPC: C08F220/04 ,  C08F220/10 ,  C08F220/00 ,  C08F220/12 ,  C09K23/00 ,  D21H17/37 ,  D21H17/67 ,  D21H17/69 ,  D21H17/53

    Abstract: Aqueous pigment suspensions which are added to the stock suspension during papermaking and contain, as a dispersant, from 0.1 to 2% by weight, based on the pigment, of a copolymer which contains, as copolymerized units, (a) from 40 to 95% by weight of an ester of (meth)acrylic acid with a saturated monohydric C1-C8-alcohol or with a saturated dihydric C2-C4-alcohol and (b) from 60 to 5% by weight of an ethylenically unsaturated C3-C5-carboxylic acid and has a K value of from 10 to 65 (determined according to H. Fikentscher in 1% aqueous solution in the form of the ammonium salt at pH 9 and at 20 DEG C.), their preparation and their use.

    34.
    发明专利
    未知

    公开(公告)号：FI860927A

    公开(公告)日：1986-09-13

    申请号：FI860927

    申请日：1986-03-05

    Applicant: BASF AG

    Inventor： HIRSCH GUENTER ,  AUHORN WERNER

    IPC: C08F220/04 ,  C08F220/00 ,  C08F220/10 ,  C08F220/12 ,  C09K23/00 ,  D21H17/37 ,  D21H17/67 ,  D21H17/69 ,  D21H

    Abstract: Aqueous pigment suspensions which are added to the stock suspension during papermaking and contain, as a dispersant, from 0.1 to 2% by weight, based on the pigment, of a copolymer which contains, as copolymerized units, (a) from 40 to 95% by weight of an ester of (meth)acrylic acid with a saturated monohydric C1-C8-alcohol or with a saturated dihydric C2-C4-alcohol and (b) from 60 to 5% by weight of an ethylenically unsaturated C3-C5-carboxylic acid and has a K value of from 10 to 65 (determined according to H. Fikentscher in 1% aqueous solution in the form of the ammonium salt at pH 9 and at 20 DEG C.), their preparation and their use.

    35.
    发明专利
    未知

    公开(公告)号：FI860927A0

    公开(公告)日：1986-03-05

    申请号：FI860927

    申请日：1986-03-05

    Applicant: BASF AG

    Inventor： HIRSCH GUENTER ,  AUHORN WERNER

    IPC: C08F220/04 ,  C08F220/00 ,  C08F220/10 ,  C08F220/12 ,  C09K23/00 ,  D21H17/37 ,  D21H17/67 ,  D21H17/69 ,  D21H

    Abstract: Aqueous pigment suspensions which are added to the stock suspension during papermaking and contain, as a dispersant, from 0.1 to 2% by weight, based on the pigment, of a copolymer which contains, as copolymerized units, (a) from 40 to 95% by weight of an ester of (meth)acrylic acid with a saturated monohydric C1-C8-alcohol or with a saturated dihydric C2-C4-alcohol and (b) from 60 to 5% by weight of an ethylenically unsaturated C3-C5-carboxylic acid and has a K value of from 10 to 65 (determined according to H. Fikentscher in 1% aqueous solution in the form of the ammonium salt at pH 9 and at 20 DEG C.), their preparation and their use.

    37.
    发明专利
    未知

    公开(公告)号：NO149177C

    公开(公告)日：1984-02-29

    申请号：NO774520

    申请日：1977-12-30

    Applicant: BASF AG

    Inventor： SCHENCK HANS-UWE ,  HIRSCH GUENTER

    IPC: D21H19/44 ,  D21H19/56 ,  D21H19/58 ,  D21H1/28

    Abstract: An improved paper coating composition containing, per 100 parts by weight of finely divided pigment, from 5 to 25 parts by weight of a copolymer A having a glass transition temperature of from -40 DEG to +50 DEG C. in the form of an aqueous dispersion and from 0.1 to 10 parts by weight of a high molecular weight polymer B which is obtained by polymerizing water-soluble ethylenically unsaturated monomers in a water-in-oil emulsion. Papers having improved water resistance are obtained.

    PAPER-COATING COMPOSITIONS
    40.
    发明专利
    PAPER-COATING COMPOSITIONS 未知

    公开(公告)号：CA1143883A

    公开(公告)日：1983-03-29

    申请号：CA344601

    申请日：1980-01-29

    Applicant: BASF AG

    Inventor： WENDEL KURT ,  HIRSCH GUENTER

    IPC: C09D133/02 ,  C09D133/04 ,  D21H19/00 ,  D21H19/44 ,  D21H19/58 ,  D21H19/60 ,  C09D3/727

    Abstract: O.Z. 0050/033671 of the disclosure: An improved paper-coating composition which contains, per 100 parts by weight of a finely divided pigment, from 5 to 25 parts by weight of a copolymer A, in the form of an aqueous dispersion, as a binder, and from 0.5 to 10 parts by weight of a copolymer B, containing (a) from 20 to 70% by weight of copolymerized units of hydroxy-C2-C4-alkyl acrylates or hydroxy-C2-C4-alkyl methacrylates, (b) from 10 to 50% by weight of copolymerized units of acrylic acid, methacrylic acid, maleic acid and/or monoesters of maleic acid and (c) from 5 to 50% by weight of copolymerized units of acrylonitrile, methacrylonitrile, C1-C4-alkyl acrylates or C1-C4-alkyl methacrylates, or vinyl esters of saturated C2-C4-carboxylic acids as the co-binder, with or without from 0.1 to 2.0 parts by weight of an optical brightener which is activated by the co-binder. The paper-coating composition has high water retention.

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