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    dispersão polimérica aquosa, processo para preparar uma dispersão polimérica aquosa, uso do polímero, tira de revestimento de papel, e, papel ou cartão.
    31.
    发明专利
    dispersão polimérica aquosa, processo para preparar uma dispersão polimérica aquosa, uso do polímero, tira de revestimento de papel, e, papel ou cartão. 未知

    公开(公告)号：BR112013004599A2

    公开(公告)日：2016-07-05

    申请号：BR112013004599

    申请日：2011-08-24

    Applicant: BASF SE

    Inventor： LAWRENZ DIRK ,  EVSTATIEVA ELITSA ,  GARLICHS FLORIAN ,  BALDAMUS JENS ,  MINDERHOUD JOHANNES JAN-BESSEL ,  BASSLER PETER

    IPC: C08F2/38 ,  C08F212/08 ,  C08F236/10 ,  C09D5/02 ,  D21H19/48

    Abstract: dispersão polimérica aquosa, processo para preparar uma dispersão polimérica aquosa, uso do polímero, tira de revestimento de papel,e, papel ou cartão. a invenção diz respeito polimérica aquosa contendo um polímero, que pode ser produzida por uma polimerização em emulsão radicalmente iniciada de monômeros radicalmente polimerizáveis etilenicamente insaturados, em que a polimerização dos monômeros é realizada na presença de uma composição reguladora de peso molecular específica. a composição reguladora de peso molecular contém pelo menos um éster de ácido mercaptoalquilcarboxílico de um ácido carboxílico c a c e pelo menos um composto oligomérico de fórmula r¹-x-(a-s) -a-y-r², em que r¹ e r² denotam h ou ch -(ch -c(=o)-, x e y denotam um átomo de oxigênio ou um átomo de enxofre, a denota um grupo de alquileno c a c divalente , e n denota um número de 1 a 8. a invenção ainda diz respeito a um método para produzir a dispersão polimérica aquosa. a dispersão polimérica pode ser usada como um aglutinante, adesivo, agente de dimensionamento para fibras, para produzir revestimentos ou para produzir compostos de revestimento de pepel.

    AQUEOUS POLYMER DISPERSION FOR PAPER WITH A COPOLYMER OF VINYL ACETATE AND AN ACRYLATE MONOMER
    32.
    发明专利
    AQUEOUS POLYMER DISPERSION FOR PAPER WITH A COPOLYMER OF VINYL ACETATE AND AN ACRYLATE MONOMER 未知

    公开(公告)号：CA2944970A1

    公开(公告)日：2015-10-15

    申请号：CA2944970

    申请日：2015-04-07

    Applicant: BASF SE

    Inventor： VELING NICO ,  JIMENEZ GARCIA LUCIA ,  LAWRENZ DIRK

    IPC: C08F2/22 ,  C08F218/08 ,  C08J3/16 ,  C08L31/04 ,  D21H19/36 ,  D21H21/08

    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 a,ß-ethlyenically unsaturated C3-C8 carboxylic acid, glycidyl methacrylate or glycidyl acrylate, optionally an ethylenically unsaturated sulfonic acid and optionally an ethylenically unsaturated other monomer. 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.

    AQUEOUS POLYMER DISPERSIONS BASED ON COPOLYMERS FORMED FROM VINYLAROMATICS AND CONJUGATED ALIPHATIC DIENES, PROCESSES FOR PREPARATION THEREOF AND USE THEREOF
    35.
    发明专利
    AQUEOUS POLYMER DISPERSIONS BASED ON COPOLYMERS FORMED FROM VINYLAROMATICS AND CONJUGATED ALIPHATIC DIENES, PROCESSES FOR PREPARATION THEREOF AND USE THEREOF 未知

    公开(公告)号：CA2700059C

    公开(公告)日：2015-01-20

    申请号：CA2700059

    申请日：2008-10-06

    Applicant: BASF SE

    Inventor： EVSTATIEVA ELITSA ,  SCHMIDT-THUMMES JURGEN ,  LAWRENZ DIRK ,  MINDERHOUD JOHANNES JAN-BESSEL ,  ARENS GUILLERMO

    IPC: C08F251/02 ,  C08F2/22 ,  C08L25/10 ,  C08L51/02 ,  C09D151/02 ,  D21H19/54 ,  D21H19/58 ,  D21H21/16

    Abstract: Aqueous polymer dispersions based on copolymers formed from vinyl-aromatics and conjugated aliphatic dienes having a mean particle size of from 80 to 150 nm are obtainable by free-radically initiated emulsion copolymerization of (a) from 19.9 to 80 parts by weight of at least one vinylaromatic compound, (b) from 19.9 to 80 parts by weight of at least one conjugated aliphatic diene, (c) from 0.1 to 10 parts by weight of at least one ethylenically unsaturated acid and (d) from 0 to 20 parts by weight of at least one other monoethylenically unsaturated monomer, where the sum of the parts by weight of monomers (a), (b), (c) and (d) is always 100, in an aqueous medium in the presence of at least one degraded starch with an intrinsic viscosity .eta. of less than 0.07 dl/g, using at least 0.9% by weight, based on all of the monomers used, of initiators selected from peroxodisulphates, peroxosulphates, azo initiators, organic peroxides, organic hydroperoxides and hydrogen peroxide, wherein at least 30% by weight of the initiators are initially charged in the aqueous medium together with the degraded starch and the monomers and the remaining initiators are metered into this initial charge under polymerization conditions. Processes for preparing this dispersion by emulsion polymerization of the monomers (a), (b), (c) and optionally (d) in the presence of a degraded starch with an intrinsic viscosity .eta. of less than 0.07 dl/g, where a portion of the initiator is initially charged together with the aqueous solution of the degraded starch in the reactor, and the remaining initiator and the monomers are metered in under polymerization conditions, and the use of the aqueous polymer dispersions as binders, adhesives, sizes for fibres or for producing coatings.

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