Aqueous polymer dispersions, method for the production and use thereof

    公开(公告)号:AU2008340157A1

    公开(公告)日:2009-07-02

    申请号:AU2008340157

    申请日:2008-12-16

    Applicant: BASF SE

    Abstract: The present invention relates to an aqueous polymer dispersion whose dispersed addition polymer P comprises, copolymerized in free-radically polymerized form, at least one polar monomer having a water solubility of greater than 50 g/liter (measured at 20° C.), and obtainable by free-radically initiated aqueous emulsion polymerization, the polar monomer being metered to the reaction mixture during the polymerization process at a variable, i.e., nonconstant rate, for example in the sense of a rate gradient. The present invention further relates to processes for preparing these aqueous polymer dispersions, to their use as binders and/or in coatings, and also to coatings comprising the polymer dispersion of the invention.

    Masas de dos componentes para recubrimiento

    公开(公告)号:ES2800278T3

    公开(公告)日:2020-12-29

    申请号:ES16766562

    申请日:2016-09-19

    Applicant: BASF SE

    Abstract: Masas de dos componentes para recubrimiento que contienen un componente dispersable en agua de poliisocianato, que contiene a) por lo menos un poliisocianato y b) por lo menos un producto de reacción de por lo menos un poliisocianato b1) con compuestos b2) con por lo menos un grupo (grupo A) hidrofílico no reactivo frente al isocianato y por lo menos un grupo (grupo B) reactivo frente al isocianato y un componente de poliacrilato que contiene una dispersión c) acuosa de polímero de por lo menos un poli(met)acrilato con grupo funcional hidroxilo, una con distribución de tamaño de partículas que tiene dos o más modas.

    MULTISTAGE POLYMER DISPERSIONS, PROCESSES FOR PREPARING THEM, AND USE THEREOF

    公开(公告)号:MY167866A

    公开(公告)日:2018-09-26

    申请号:MYPI2013002083

    申请日:2011-12-16

    Applicant: BASF SE

    Abstract: The present invention relates to aqueous multistage polymer dispersions obtainable by free-radically initiated aqueous emulsion polymerization, having a soft phase and a hard phase, and a hard-to-soft stage ratio of 25% to 95% by weight to 75% to 5% by weight, the glass transition temperature (Tg) of the soft phase, as first stage, being -30 to 0° C, and that of the hard phase, as second stage, being 20 to 60° C., comprising at least one monomer of the general formula I in which the variables have the following definitions: n=0 to 2, R 1, R2, R3=independently of one another hydrogen or methyl group, X=O or NH, Y=H, alkali metal or NH4, to processes for preparing these aqueous polymer dispersions, and to the use thereof as binders in coatings, and also to coatings comprising the polymer dispersion of the invention.

    Procedimiento para la preparación de dispersiones acuosas de polímero

    公开(公告)号:ES2668393T3

    公开(公告)日:2018-05-17

    申请号:ES08864988

    申请日:2008-12-16

    Applicant: BASF SE

    Abstract: Procedimiento para la preparación de dispersiones acuosas de polímero, cuyo polímero P se encuentra en distribución dispersa, caracterizado porque el polímero P de la dispersión acuosa de polímero contiene incorporado por polimerización al menos un monómero polar con una solubilidad en agua superior a 50 g/litro (medida a 20 °C) en forma polimerizada por radicales, producido mediante polimerización en emulsión acuosa iniciada por radicales, en el que el monómero polar se dosifica durante el proceso de polimerización con velocidad variable, es decir, no constante, y, caracterizado porque cuyo polímero P que se encuentra en distribución dispersa contiene incorporado por polimerización al menos un ácido etilénicamente insaturado y/o su base conjugada en forma polimerizada por radicales, y, caracterizado porque el polímero P de la dispersión acuosa de polímero contiene incorporado por polimerización al menos un monómero de fórmula general I **(Ver fórmula)** en la que las variables tienen el siguiente significado: n >= 0 a 2 R1, R2, R3 >= independientemente entre sí hidrógeno o grupo metilo X >= O o NH Y >= H, metal alcalino, NH4 así como al menos un monómero II polimerizable por radicales, que contiene incorporado por polimerización al menos dos grupos COOX (en los que X >= H, metal) en forma polimerizada por radicales, que puede obtenerse mediante polimerización en emulsión acuosa iniciada por radicales, en donde al menos uno de los dos monómeros I o II se dosifica durante el proceso de polimerización con velocidad variable, es decir, no constante, a la mezcla de reacción.

    AQUEOUS BINDER COMPOSITION COMPRISING OLIGOMERS

    公开(公告)号:CA2744980C

    公开(公告)日:2017-01-03

    申请号:CA2744980

    申请日:2009-11-23

    Applicant: BASF SE

    Abstract: The present invention relates to an aqueous binder composition comprising: at least one polymer P with a glass transition temperature T g in the range from -20 to +60°C in the form of an aqueous polymer dispersion PD obtainable by free-radi-cal emulsion polymerization of at least one ethylenically unsaturated monomer M, and 0.1 to 10% by weight, based on the sum of polymer P and oligomer, of one or more oligomers formed from ethylenically unsaturated monomers and having a mean molecular weight Mw of 1000 to 30 000 g/mol and a glass transition temperature T g in the range from +60 to +120°C and an acid number in the range from 50 to 350, to a process for preparation thereof, to coating materials comprising them, and to the use of water-solu-ble oligomers in a mixture with aqueous polymer dispersions in coating materials which lead to coatings with increased shine.

    USE OF MULTI-STAGE POLYMERIZATE DISPERSIONS TO COAT METAL SHEETS

    公开(公告)号:ZA201409467B

    公开(公告)日:2016-09-28

    申请号:ZA201409467

    申请日:2014-12-22

    Applicant: BASF SE

    Abstract: The present invention relates to the use of aqueous multistage polymer dispersions obtainable by free-radically initiated aqueous emulsion polymerization, having a soft phase and a hard phase and having a hard-to-soft stage ratio of 25% to 95% by weight to 75% to 5% by weight, the glass transition temperature (Tg) of the soft phase, as first stage, being −30 to 0° C. and that of the hard phase, as second stage, being 20 to 60° C., comprising at least one monomer of the general formula I in which the variables have the following definitions: n=0 to 2, R1, R2, R3=independently of one another hydrogen or methyl group, X═O or NH, Y═H, alkali metal or NH4, to coat metal sheets.

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