FIELD: medicine.
SUBSTANCE: group of inventions refers to medicine, specifically to discoloring composition and to the substrate with discoloring compositions applied on it. Discoloring composition contains a leuco dye, a colour developer and a desensitizing agent. Discoloring composition varies from colorless or almost colorless composition to colorful when it is wetted by water fluid. Discoloring composition remains colorless or almost colorless before impact of high humidity conditions.
EFFECT: discoloring composition remains stable under high humidity conditions.
6 cl, 3 dwg, 2 tbl
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|---|---|---|---|
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|
RU2640067C2 |
