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Photostabilisation of colour formers for heat‐sensitive recording systems: Effect of counter‐ions on the photofading of fluoran dyes
Author(s) -
Oda Hironori
Publication year - 1995
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280630305
Subject(s) - chemistry , zinc , metal ions in aqueous solution , ion , cellulose , metal , inorganic chemistry , organic chemistry , combinatorial chemistry
Fluorans are given considerable attention as functional dyes for heat‐and/or pressure‐sensitive recording media. Numerous potential metal complexes were synthesised to prolong the life of coloured species. The protecting effect of these compounds against the photofading was examined on cellulose. It was found that the zinc or nickel salts of 3,5‐dihydroxy‐2‐naphthoic acid and its derivatives can be applied as effective stabilisers against the fading of fluoran dyes.