Recording material employing chromogenic bisquinazolines

Details Recording material employing chromogenic bisquinazolines Recording material employing chromogenic bisquinazolines

1986-08-07

1987-11-10

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

Having a colorless color-former, developer therefor, or...

Identified color-former

427151, 503217, 503223, B41M 516, B41M 518, B41M 522

Patent

active

047057750

ABSTRACT:
Chromogenic bisquinazolines of the formula ##STR1## wherein Q is the direct bond or an aliphatic or cycloaliphatic hydrocarbon radical, or is --CO--, --S-- or --SO.sub.2 --, and

REFERENCES:
patent: 4435003 (1984-03-01), Fletcher
patent: 4480096 (1985-11-01), Fletcher
patent: 4562449 (1985-12-01), Balli et al.
patent: 4587538 (1986-05-01), Shanton et al.

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