Lactone compounds containing an indolizine radical

Details Lactone compounds containing an indolizine radical Lactone compounds containing an indolizine radical

1979-03-05

1980-11-11

Coughlan, Jr., Paul M.

Textiles: manufacturing

427151, 544115, 544117, 544127, 546121, 544345, 546 94, 546116, 544350, 546 89, B01M 516

Patent

active

042328870

ABSTRACT:
Chromogenic compounds of normally colorless form are disclosed having the following structural formula: ##STR1## wherein E represents a six-membered aromatic or heterocyclic ring which may have an aromatic condensed ring and both the E ring and the condensed ring may be substituted, A represents an optionally substituted aminophenyl, indolyl, benzoindolyl, julolidinyl or kairolyl radical or the radical represented by B, and B represents a family of indolizine radicals. The compounds of this invention are eligible for use in pressure-sensitive and heat sensitive record materials and manifold marking systems.

REFERENCES:
patent: 3916070 (1975-10-01), Ozutsumi et al.
patent: 3958815 (1976-05-01), Poot et al.
patent: 4020068 (1977-04-01), Farber

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