Photoerasable paint and method for using photoerasable paint

Details Photoerasable paint and method for using photoerasable paint Photoerasable paint and method for using photoerasable paint

1998-12-03

2000-09-19

McPherson, John A.

Radiation imagery chemistry: process, composition, or product th

Erasable imaging

106 3101, 106 3103, 106 3105, 427553, 427160, 430339, C09D 500

Patent

active

06120949&

ABSTRACT:
Applications of photoerasable colorant composition include photoerasable price markings for pricing goods, documents such as gaming tickets for securely communicating concealed information, photoerasable paint for temporary markings on terrain and structures such as signs, roadways, trees, and buildings, marking instruments such as pens, and wick or felt markers, ultraviolet light exposure indicators, and dry printing. The photoerasable or mutable colorant composition comprises a mutable colorant and an ultraviolet radiation transorber which, upon irradiation with ultraviolet radiation, interacts with the colorant to irreversibly mutate the colorant and thereby render the colorant substantially colorless. The mutable colorant composition may also include a molecular includant.

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