Color-forming composition

Details Color-forming composition Color-forming composition

1987-11-25

1988-12-13

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

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

Identified organic electron acceptor other than phenolic resin

106 21, 427150, 428913, 428914, 503225, B41M 516, B41M 518, B41M 522

Patent

active

047910968

ABSTRACT:
A color-forming composition which comprises a chromogenic dye and, as a color developer, an L-ascorbic acid 5,6-O-ketal or -acetal or an erythorbic acid 5,6-O-ketal or -acetal has good storage stability before color development. Images after color development are distinct and have high color density and good durability. The composition is useful as a color-forming composition in heat-sensitive or pressure-sensitive recording materials.

REFERENCES:
patent: 3870479 (1975-03-01), Kubotera et al.
patent: 4013473 (1977-03-01), Willems et al.
patent: 4379835 (1983-04-01), Lowrey et al.
patent: 4416966 (1983-11-01), Sanders et al.
patent: 4456669 (1984-06-01), Yubakami et al.
patent: 4511642 (1985-04-01), Higashi et al.

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