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    2.
    发明专利
    未知

    公开(公告)号：FI852418L

    公开(公告)日：1985-12-19

    申请号：FI852418

    申请日：1985-06-18

    Applicant: BASF AG

    Inventor： BUBAM HANS-GEORG ,  HEIDER LOTHAR ,  BIEDERBECK UWE ,  STANGER BERND

    IPC: C08F2/00 ,  C08F2/22 ,  C08F2/24 ,  C08F2/44 ,  C08F212/04 ,  C08F212/06 ,  C08F220/00 ,  C08F220/02 ,  D21H19/58 ,  C08F

    Abstract: A process for the preparation of stable aqueous polymer dispersions which contain an alkenyl-aromatic compound as copolymerized units, by polymerizing monomer mixtures which contain (a) not less than 2% by weight of an alkenyl-aromatic compound and (b) from 0.5 to 10% by weight of an ethylenically unsaturated C3-C5-carboxylic acid and/or its amide and/or its nitrile and/or an ethylenically unsaturated monomer containing sulfonic acid groups, with or without (c) acrylic acid esters, methacrylic acid esters and/or butadiene in aqueous emulsion in the presence of a polymerization initiator, with or without an emulsifier and with or without a polymerization regulator, at a pH below 7, in the presence of from 0.2 to 2% by weight of formaldehyde.

    3.
    发明专利
    未知

    公开(公告)号：FI83328B

    公开(公告)日：1991-03-15

    申请号：FI852418

    申请日：1985-06-18

    Applicant: BASF AG

    Inventor： BUBAM HANS-GEORG ,  HEIDER LOTHAR ,  BIEDERBECK UWE ,  STANGER BERND

    IPC: C08F2/00 ,  C08F2/22 ,  C08F2/24 ,  C08F2/44 ,  C08F212/04 ,  C08F212/06 ,  C08F220/00 ,  C08F220/02 ,  D21H19/58 ,  C08F212/08 ,  D21H17/35 ,  D06M15/233

    Abstract: A process for the preparation of stable aqueous polymer dispersions which contain an alkenyl-aromatic compound as copolymerized units, by polymerizing monomer mixtures which contain (a) not less than 2% by weight of an alkenyl-aromatic compound and (b) from 0.5 to 10% by weight of an ethylenically unsaturated C3-C5-carboxylic acid and/or its amide and/or its nitrile and/or an ethylenically unsaturated monomer containing sulfonic acid groups, with or without (c) acrylic acid esters, methacrylic acid esters and/or butadiene in aqueous emulsion in the presence of a polymerization initiator, with or without an emulsifier and with or without a polymerization regulator, at a pH below 7, in the presence of from 0.2 to 2% by weight of formaldehyde.

    6.
    发明专利
    未知

    公开(公告)号：NO164603C

    公开(公告)日：1990-10-24

    申请号：NO852586

    申请日：1985-06-27

    Applicant: BASF AG

    Inventor： BUBAM HANS-GEORG ,  HEIDER LOTHAR ,  BIEDERBECK UWE ,  STANGER BERND

    IPC: C08F2/00 ,  C08F2/22 ,  C08F2/24 ,  C08F2/44 ,  C08F212/04 ,  C08F212/06 ,  C08F220/00 ,  C08F220/02 ,  D21H19/58 ,  D21H13/12

    Abstract: A process for the preparation of stable aqueous polymer dispersions which contain an alkenyl-aromatic compound as copolymerized units, by polymerizing monomer mixtures which contain (a) not less than 2% by weight of an alkenyl-aromatic compound and (b) from 0.5 to 10% by weight of an ethylenically unsaturated C3-C5-carboxylic acid and/or its amide and/or its nitrile and/or an ethylenically unsaturated monomer containing sulfonic acid groups, with or without (c) acrylic acid esters, methacrylic acid esters and/or butadiene in aqueous emulsion in the presence of a polymerization initiator, with or without an emulsifier and with or without a polymerization regulator, at a pH below 7, in the presence of from 0.2 to 2% by weight of formaldehyde.

    7.
    发明专利
    未知

    公开(公告)号：NO164603B

    公开(公告)日：1990-07-16

    申请号：NO852586

    申请日：1985-06-27

    Applicant: BASF AG

    Inventor： BUBAM HANS-GEORG ,  HEIDER LOTHAR ,  BIEDERBECK UWE ,  STANGER BERND

    IPC: C08F2/00 ,  C08F2/22 ,  C08F2/24 ,  C08F2/44 ,  C08F212/04 ,  C08F212/06 ,  C08F220/00 ,  C08F220/02 ,  D21H19/58 ,  D21H13/12

    Abstract: A process for the preparation of stable aqueous polymer dispersions which contain an alkenyl-aromatic compound as copolymerized units, by polymerizing monomer mixtures which contain (a) not less than 2% by weight of an alkenyl-aromatic compound and (b) from 0.5 to 10% by weight of an ethylenically unsaturated C3-C5-carboxylic acid and/or its amide and/or its nitrile and/or an ethylenically unsaturated monomer containing sulfonic acid groups, with or without (c) acrylic acid esters, methacrylic acid esters and/or butadiene in aqueous emulsion in the presence of a polymerization initiator, with or without an emulsifier and with or without a polymerization regulator, at a pH below 7, in the presence of from 0.2 to 2% by weight of formaldehyde.

    9.
    发明专利
    未知

    公开(公告)号：NO852586L

    公开(公告)日：1985-12-30

    申请号：NO852586

    申请日：1985-06-27

    Applicant: BASF AG

    Inventor： BUBAM HANS-GEORG ,  HEIDER LOTHAR ,  BIEDERBECK UWE ,  STANGER BERND

    IPC: C08F2/00 ,  C08F2/22 ,  C08F2/24 ,  C08F2/44 ,  C08F212/04 ,  C08F212/06 ,  C08F220/00 ,  C08F220/02 ,  D21H19/58 ,  C08F

    Abstract: A process for the preparation of stable aqueous polymer dispersions which contain an alkenyl-aromatic compound as copolymerized units, by polymerizing monomer mixtures which contain (a) not less than 2% by weight of an alkenyl-aromatic compound and (b) from 0.5 to 10% by weight of an ethylenically unsaturated C3-C5-carboxylic acid and/or its amide and/or its nitrile and/or an ethylenically unsaturated monomer containing sulfonic acid groups, with or without (c) acrylic acid esters, methacrylic acid esters and/or butadiene in aqueous emulsion in the presence of a polymerization initiator, with or without an emulsifier and with or without a polymerization regulator, at a pH below 7, in the presence of from 0.2 to 2% by weight of formaldehyde.

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