| 摘要 |
An ink composition for indicating the progress of sterilization with EO is provided which comprises; (1) at least one disperse dye of the general formula A-N=N-B wherein A is the residue of a heterocyclic compound containing nitrogen atom which is not substituted with alkyl group and selected from the group consisting of the pyridine, quinoline, isoquinoline, triazole, tetrazole, indazole, thiazole, benzothiazole and thiadiazole rings, which residue may optionally have one or more undissociated substituents, and B is a coupling component, (2) at least one binder component selected from the group consisting of polyacrylic acid, polymethacrylic acid and acrylic acid-methacrylic acid copolymers, (3) at least one ultrafine filler selected from the group consisting of ultrafine particles of silica, aluminum oxide and titanium oxide, and (4) at least one polar solvent.
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