Coating means comprising composite particles

    公开(公告)号:AU2011209276A1

    公开(公告)日:2012-08-16

    申请号:AU2011209276

    申请日:2011-01-24

    Applicant: BASF SE

    Abstract: The invention relates to a coating means in the form of an aqueous composition comprising: 25 to 55 wt % composite particles having an average particle size of 50 to 350 nm in the form of an aqueous dispersion, which are built from 20 to 60 wt % relative to the composite particles of inorganic solids having an average particle size of 5 to 100 nm, 40 to 80 wt % relative to the composite particles of a polymer matrix having a T in the range from -60 to +40°C, which is obtainable by radical emulsion polymerization of at least one ethylenic unsaturated monomer and 20 to 50 wt % of fillers, wherein 5 to 40 wt % relative to the total solid content are selected among aluminum silicates, borosilicate glasses, polymethylmethacrylate particles and polystyrol particles, 1 to 30 wt % of pigments and 0 to 5 wt % of one or more thickening agents, and 0.1 to 20 wt % of additional auxiliaries each relative to the total solid content, and to the use thereof for coating surfaces, objects, substrates and foundations having permanent water contact, in particular with swimming pool water.

    PROCEDIMIENTO PARA LA OBTENCION DE UNA DISPERSION ACUOSA DE PARTICULAS COMPUESTAS.

    公开(公告)号:ES2370565T3

    公开(公告)日:2011-12-20

    申请号:ES08840909

    申请日:2008-10-17

    Applicant: BASF SE

    Abstract: Procedimiento para la obtención de una dispersión acuosa de partículas formadas por polímero y producto sólido inorgánico finamente dividido (dispersión acuosa de partículas compuestas), en el que se distribuye de manera dispersa monómeros con insaturación etilénica en el medio acuoso, y por medio de al menos un iniciador de polimerización a través de radicales, en presencia de al menos un producto sólido distribuido de manera dispersa, finamente dividido, inorgánico, y al menos un agente auxiliar dispersante, se polimeriza según el método de polimerización en emulsión acuosa a través de radicales, caracterizado porque a) el producto sólido inorgánico presenta un diámetro medio de partícula > 0 y = 5 y

    Use of aqueous composite-particle dispersions as binders in elastic coatings

    公开(公告)号:AU2009289333A1

    公开(公告)日:2010-03-11

    申请号:AU2009289333

    申请日:2009-09-01

    Applicant: BASF SE

    Abstract: The present invention provides for the use of an aqueous dispersion of particles composed of polymer and finely divided inorganic solid (aqueous composite-particle dispersion) as a binder in elastic coatings, such as paints, more particularly exterior architectural paints, comprising preparing the aqueous composite-particle dispersion by dispersely distributing ethylenically unsaturated monomers in an aqueous medium and carrying out polymerization by means of at least one free-radical polymerization initiator in the presence of at least one dispersely distributed, finely divided inorganic solid having an average particle diameter ≦̸100 nm and at least one dispersant by the method of free-radically aqueous emulsion polymerization, and using as ethylenically unsaturated monomers a monomer mixture which comprises ethylenically unsaturated monomers A and optionally 0% to ≦̸10% by weight of an ethylenically unsaturated monomer B containing an epoxide group (epoxide monomer).

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