Colorants for ball-point pen and ribbon inks

Details Colorants for ball-point pen and ribbon inks Colorants for ball-point pen and ribbon inks

1987-12-21

1989-04-25

Hollrah, Glennon H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C09B 1110

Patent

active

048246107

ABSTRACT:
Substantially pure triarylmethane dyestuff salts free of contamination by arylamines are prepared by isolating in relatively pure form, the carbinol base corresponding to the dyestuff followed by salt formation by reaction with the appropriate acid. The resulting colorants are highly suitable for ball-point pen, printing, and ribbon inks.

REFERENCES:
patent: 3679713 (1972-07-01), Feldman et al.
patent: 4330476 (1982-05-01), Hermann
patent: 4448446 (1984-05-01), Flores
patent: 4678613 (1987-07-01), Flores

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