Glazing pigment and method for the production thereof

C - Chemistry – Metallurgy – 23 – C

Patent

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Details

C23C 14/00 (2006.01) A61Q 1/02 (2006.01) C09C 1/00 (2006.01) C09C 1/36 (2006.01) C09D 5/36 (2006.01) C23C 14/02 (2006.01) C23C 14/06 (2006.01) C23C 14/08 (2006.01)

Patent

CA 2398165

The invention concerns a method for the production of a glazing pigment, wherein a multilayer film is produced by vacuum deposition of a base and the particles thus produced are fragmented into pigment particles of a desired size after the base is removed, whereby vapor deposition of a plurality of layers in separate locations is carried out inside an evacuable container and the base is moved along the vaporization sources. According to the invention, at least one carrier layer (A), especially a silicon oxide layer, and at least one metal oxide layer (B), especially a titanium oxide layer, are vapor- deposited on the base, especially a continuos metal strip.

La présente invention concerne un procédé de production d'un pigment brillant, dans lequel un film multicouche est produit par métallisation sous vide d'une base, puis, après décollement de la base, les particules ainsi produites sont fragmentées en particules pigmentaires de dimension souhaitée. La métallisation sous vide de plusieurs couches, à des emplacements séparés les uns des autres, est réalisée à l'intérieur d'un récipient sous vide et la base est passée devant des sources de vaporisation. Selon cette invention, au moins une couche support (A), notamment une couche d'oxyde de silicium, et au moins une couche d'oxyde métallique (B), notamment une couche d'oxyde de titane, sont métallisées sous vide sur la base, notamment une bande métallique en circulation.

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