Paint and other materials including a taggant
AssigneeHenry Guy Stevens
InventorHenry Guy Stevens
Life of this patent
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Abstract
There is provided a paint including a pigment, a carrier liquid, a binder, one or more additives, and a taggant corresponding to the one or more additives. The taggant is provided in an amount up to substantially 0.1% by weight of the paint. The taggant is excitable by infra-red or UV light at one wavelength to emit light at one or more other wavelengths, the emission wavelength or spectrum of the taggant being indicative of the additive(s) in the paint. A method of authenticating the paint on a substrate is also provided.
Claims20
A paint or varnish comprising:
- in respect of paint, a pigment;
- a carrier liquid;
- a binder;
- one or more additives;
- and
- one or more inorganic or ceramic taggants selected to correspond to the one or more additives,
- wherein the one or more taggants are provided in an amount up to 0.1% by weight of the paint or varnish, the one or more taggants are evenly dispersed and suspended in the carrier liquid, and the one or more taggants have a particle size or particle size range suitable for remaining in suspension, and
- wherein for authentication of the paint or varnish on a substrate the one or more taggants are excitable by infra-red or ultraviolet light at one wavelength to emit light at one or more other wavelengths, the emission wavelength or spectrum of the one or more taggants being indicative of the one or more additive in the paint or varnish for use in authenticating the paint or varnish.
A taggant composition for addition to a paint or varnish, the taggant composition comprising one or more inorganic or ceramic taggants, one or more additives, and a dispersant, the one or more taggants corresponding to the one or more additives, the one or more taggants being evenly dispersed and suspended in the dispersant, the one or more taggants having a particle size or particle size range suitable for remaining in suspension, in which for authentication of the taggant composition in a paint or varnish on a substrate the one or more taggants are excitable by infra-red or ultraviolet light at one wavelength to emit light at one or more other wavelengths, the emission wavelength or spectrum of the one or more taggants being indicative of the additive(s) in the taggant composition for use in authenticating the taggant composition as part of a paint or varnish.
A taggant composition as claimed in 16, in which the one or more antibacterial components include silver ions.
Dependencies are inferred from the claim text.