Photocatalytically active polysiloxane coating compositions

Photocatalytically active polysiloxane coating compositions

  • CN 102,352,185 A
  • Filed: 09/26/2007
  • Published: 02/15/2012
  • Est. Priority Date: 10/18/2006
  • Status: Active Application
First Claim
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1. the photocatalytic activity polysiloxane composition that coated substrates is used comprises(a) gross weight with composition is a benchmark, and the median size of 0.5%-20% weight is the photocatalytic titanium dioxide particles of 2 nanometer to 100 nanometers;

  • (b) calcium carbonate granule of 0.05%-40% weight, wherein calcium carbonate granule is 0.01-50 with the ratio of light-catalysed titanium dioxide granule;

    With(c) a kind of solvent, the mixed solvent that is selected from water, organic solvent or forms by water and organic solvent,It is characterized in that in said polysiloxane composition the gross weight that adds with composition is a benchmark, in dry-matter, 0.1%-20% weight have 0.1 micron styrene resin hollow microspheres to 10 microns outer diameter, thus(i) diopter of the dry film coating that forms by said polysiloxane composition than the diopter of the dry film coating that forms by the identical polysiloxane composition that does not comprise said styrene resin hollow microspheres big and(ii) the loss of the weight percentage of said dry film coating is littler than the weight percentage loss of the identical polysiloxane dry film coating of the said styrene resin hollow microspheres that is not present in polysiloxane composition in the time in identical definition in the time of definition.

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