Title:
BENZOINDOLE PHTHALIDE COLOR DEVELOPABLE COMPOUND
Document Type and Number:
Japanese Patent JPS55115454
Kind Code:
A
Abstract:
A chromogenic compound of normally colorless form is disclosed having the following structural formula: wherein A can be aminophenyl, indolyl, and benzoindolyl, substituted or not; B can be benzoindolyl, substituted or not; and E can be a broad family of aromatic and heterocyclic structures. The compound is eligible for use in pressure-sensitive record materials and manifold marking systems. Because of light absorption characteristics, selected compounds of this invention are especially useful where broad spectrum absorption and machine readability are important.
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Inventors:
SHIERUDON FUAABAA
Application Number:
JP1589280A
Publication Date:
September 05, 1980
Filing Date:
February 12, 1980
Export Citation:
Assignee:
APPLETON PAPER INC
International Classes:
B41M5/145; C07D307/89; C07D491/04; C07D491/048; C09B11/26; C09B57/00; (IPC1-7): C09B11/26