Aqueous-based and transparent coatings for marking substrates
AssigneeGill Jennings & Every LLP
InventorsJonathan Campbell, William Walker, Alan Platt, John Whitworth, Karen O'Donoghue, Ann Hunt, Howard Roger Dungworth, John Mark Plonka
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Abstract
The present invention provides a composition, which comprises an aqueous-based solvent and forms a transparent colourless coating, which yields markings of high contrast on exposure to energy. It also provides a process for the preparation of these compositions, substrates coated with these compositions and a process for their preparation, a process for preparing marked substrates using these compositions and marked substrates obtainable by the latter process.
Claims28
A composition comprising an oxygen containing transition metal compound and an aqueous-based solvent and forming a transparent colourless coating, which yields markings of high contrast on exposure to energy.
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Dependencies are inferred from the claim text.