Micro-capsules containing ureido fluoran chromogenic compounds

Details Micro-capsules containing ureido fluoran chromogenic compounds Micro-capsules containing ureido fluoran chromogenic compounds

1978-05-05

1980-02-05

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

260335, 282 275, 427151, 427152, 428307, 428327, 428914, B01J 1302

Patent

active

041871936

ABSTRACT:
A chromogenic compound having the structural formula ##STR1## wherein R.sup.1 and R.sup.2 each represent an alkyl group;

REFERENCES:
patent: 3328257 (1967-06-01), Vrancken et al.
patent: 3576660 (1971-04-01), Bayless et al.
patent: 3649649 (1972-03-01), Orita et al.
patent: 3669711 (1972-06-01), Kimura et al.
patent: 3703397 (1972-11-01), Lin et al.
patent: 3715226 (1973-02-01), Lin
patent: 3721576 (1973-03-01), Farber et al.
patent: 3730755 (1973-05-01), Lin

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