Use of transition metal compounds in imageable coatings
AssigneeDatalase Ltd.
InventorBrian Stubbs
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Abstract
A process for forming an image on a substrate, which comprises coati ng the substrate with an amine of molybdenum, tungsten or vanadium that changes colour on heating or irradiation as an aqueous dispersion or suspension or as a solution in an organic solvent. Also described is a coated substrate, wherein the coating is a substantially visible light-transparent layer comprising an amine compound of molybdenum, tungsten or vanadium, and a solution of said amine compound and a thermoplastic polymer or a photo-polymerisable monomer.
Claims29
A method for forming an image on a substrate, which comprises coating the substrate with a solution, in an organic solvent, of an amine compound of molybdenum, tungsten or vanadium that changes colour on heating or irradiation, and heating or irradiating the coating.
A method for forming an image on a substrate, which comprises coating the substrate with an aqueous dispersion or suspension, of an amine compound of molybdenum, tungsten or vanadium that changes colour on heating or irradiation, and heating or irradiating the coating.
A coated substrate, wherein the coating is a substantially visible light-transparent layer comprising an amine compound of molybdenum, tungsten or vanadium that changes colour on heating or irradiation.
A solution of an amine compound of molybdenum, tungsten or vanadium that changes colour on heating or irradiation and one of the following:
- a thermoplastic polymer;
- or a photopolymerisable monomer.
(canceled)
Dependencies are inferred from the claim text.