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    PAPER COATING COMPOSITIONS COMPRISING A POLYMER DISPERSION FROM ROOM TEMPERATURE LIQUID AND GASEOUS MONOMERS
    1.
    发明申请
    PAPER COATING COMPOSITIONS COMPRISING A POLYMER DISPERSION FROM ROOM TEMPERATURE LIQUID AND GASEOUS MONOMERS 审中-公开
    包含聚合物分散于室温液体和气体单体的纸涂料组合物

    公开(公告)号：US20140302309A1

    公开(公告)日：2014-10-09

    申请号：US14351463

    申请日：2012-10-26

    Applicant: BASF SE

    Inventor： Dirk Lawrenz ,  Juergen Schmidt-Thuemmes ,  Nico Veling

    IPC: D21H19/56 ,  D21H19/58

    CPC classification number: D21H19/56 ,  C08L2201/54 ,  C09D123/0853 ,  C09D125/10 ,  C09D125/12 ,  D21H19/58 ,  D21H21/52 ,  Y10T428/254

    Abstract: Paper coating compositions comprise inorganic pigments and an aqueous polymeric dispersion comprising dispersed polymeric particles. The polymers are obtainable by polymerization of a first monomer that is liquid at room temperature, has a boiling point of at least 50° C. and a glass transition temperature of at least 20° C. as homopolymer, and a second monomer that is gaseous at room temperature, has a boiling point of below 0° C. and a glass transition temperature of below −30° C. as homopolymer. The dispersed polymeric particles have an average size of below 150 nm and a glass transition temperature in the range from −10 to +30° C.

    Abstract translation: 纸涂层组合物包含无机颜料和包含分散的聚合物颗粒的水性聚合物分散体。 聚合物可通过在室温下液体化，沸点至少为50℃，玻璃化转变温度为至少20℃的第一单体作为均聚物聚合而获得，第二单体为气态 在室温下，沸点低于0℃，玻璃化转变温度低于-30℃作为均聚物。 分散的聚合物颗粒的平均尺寸低于150nm，玻璃化转变温度在-10至+ 30℃的范围内。

    Method for preparing an aqueous polymer dispersion from a vinyl aromatic compound and a conjugated aliphatic diene
    5.
    发明授权
    Method for preparing an aqueous polymer dispersion from a vinyl aromatic compound and a conjugated aliphatic diene 有权

    公开(公告)号：US12098222B2

    公开(公告)日：2024-09-24

    申请号：US17299680

    申请日：2019-11-21

    Applicant: BASF SE

    Inventor： Nico Veling ,  Carmen-Elena Cimpeanu ,  Dirk Lawrenz

    IPC: C08F2/22 ,  C08F2/38 ,  C08F212/08 ,  C08F220/06 ,  C08F222/02 ,  C08F236/06 ,  C08F236/08 ,  C08K5/14 ,  D21H19/58

    CPC classification number: C08F2/22 ,  C08F2/38 ,  C08F212/08 ,  C08F220/06 ,  C08F222/02 ,  C08F236/06 ,  C08F236/08 ,  C08K5/14 ,  D21H19/58 ,  C08F2800/20

    Abstract: The present invention relates to a process for producing an aqueous polymer dispersion by free-radically initiated aqueous emulsion polymerization, by polymerizing, in an aqueous medium,



    (a) 40 to 75 parts by weight of at least one vinylaromatic compound and
    (b) 24.9 to 59.9 parts by weight of at least one conjugated aliphatic diene
    (c) 0.1 to 10 parts by weight of at least one monomer comprising acid groups and
    (d) 0 to 20 parts by weight of at least one other monoethylenically unsaturated monomer,
    the amounts of the monomers (a) to (d) adding up to 100 parts by weight,
    in a monomer feed process in the presence of at least one inorganic peroxide and at least one organic peroxide, with the proviso that
    the continuous metering of the inorganic peroxide starts at the same time as the continuous metering of the vinylaromatic compound,
    the metering of the organic peroxide is started at a time at which at least 5% and not more than 20% of the vinylaromatic compound has already been metered in in a continuous mass flow under polymerization conditions and
    optionally a portion of the inorganic peroxide is initially charged,
    and also to the aqueous polymer dispersions produced by the process and to the use of these as a binder, adhesive, sizing agent for fibers, for the production of coatings or for the production of a paper coating slip.

    Aqueous polymer dispersion for paper with a copolymer of vinyl acetate and an acrylate monomer prepared in the presence of a starch derivative
    6.
    发明授权
    Aqueous polymer dispersion for paper with a copolymer of vinyl acetate and an acrylate monomer prepared in the presence of a starch derivative 有权

    公开(公告)号：US10167407B2

    公开(公告)日：2019-01-01

    申请号：US15303337

    申请日：2015-04-07

    Applicant: BASF SE

    Inventor： Nico Veling ,  Lucia Jimenez Garcia ,  Dirk Lawrenz

    IPC: C09D131/04 ,  C08F228/02 ,  C08L3/04 ,  C08F218/08 ,  C08L31/04 ,  C09D5/00 ,  D21H19/54 ,  D21H19/56 ,  D21H21/18

    Abstract: The invention relates to a process for preparing an aqueous dispersion of a polymer P, which comprises the emulsion polymerization of vinyl acetate, an acrylate monomer, which is a C1-C10 alkyl acrylate or a C1-C10 methacrylate, an α,β-ethlyenically unsaturated C3-C8 carboxylic acid and at least one out of glycidyl methacrylate, glycidyl acrylate, allyl methacrylate and allyl acrylate, in the presence of a starch derivative. Optionally, an additional monomer is an ethylenically unsaturated sulfonic acid, an ethylenically unsaturated other monomer or both of them. Furthermore, the aqueous polymer dispersion obtainable from this process and a powder form thereof are disclosed. They are useful for a paper coating slip containing one of the aforementioned forms. A paper or a cardboard, which is coated with the paper coating slip, shows surface strength, which is expressed by a good dry pick resistance, a good wet pick resistance or good offset test results. The aqueous polymer dispersion or the powder form thereof is furthermore useful as a binder.

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