Stabilized stain composition
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United States of America Patent
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May 3, 1988
Grant Date -
N/A
app pub date -
Apr 1, 1985
filing date -
Apr 1, 1985
priority date (Note) -
Expired
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Abstract
Formulations of a cationic dye component (e.g., Azure A-Azure B-Azure C mixtures), an anionic dye component (e.g., Eosin Y) and an alcohol solvent (e.g., methanol or methanol-glycerol mixtures) are stabilized by an amino acid or its acid addition salt (e.g. lysine hydrochloride or glycine or a mixture of these).
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