Printing process

Details Printing process Printing process

C - Chemistry, Metallurgy

09

B

C09B 29/46 (2006.01) B41M 1/34 (2006.01) B41M 3/00 (2006.01) C03C 17/32 (2006.01) C08F 8/30 (2006.01) C09B 29/00 (2006.01) C09B 29/036 (2006.01) C09B 29/48 (2006.01) C09D 11/00 (2006.01) G02B 5/20 (2006.01) G02B 5/22 (2006.01) G03C 7/06 (2006.01)

Patent

CA 2188679

A process for preparing an optical filter comprising a coloured cross-linked polymeric coating on a transparent substrate, which comprises applying to the substrate, by a printing process, a mixture comprising one or more polymer precursor(s), and one or more dye(s) having one or more heterocyclic NH group(s) or one or more substituent(s) capable of forming a covalent bond with the polymeric precursor, and thereafter curing the mixture. The invention also provides formulations comprising one or more polymer precursors and dyes, optical filters, and a novel dye.

Un procédé de préparation d'un filtre optique, qui comprend un revêtement polymère réticulé coloré déposé sur un substrat transparent, consiste à appliquer à ce substrat, grâce à un procédé d'impression, un mélange comprenant un ou plusieurs précurseurs de polymère(s) et un ou plusieurs colorants dotés d'un ou plusieurs groupes NH hétérocycliques ou d'un ou plusieurs substituants pouvant former une liaison covalente avec le précurseur de polymère, puis à cuire ce mélange. L'invention concerne aussi des formulations comprenant un ou plusieurs précurseurs de polymères et colorants, des filtres optiques et un nouveau colorant.

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