Process for making carbonless copying paper

Details Process for making carbonless copying paper Process for making carbonless copying paper

1980-07-23

1982-04-13

Hess, Bruce H.

Coating processes

Transfer or copy sheet making

Reactive components

252316, 282 275, 427151, 427153, 4283208, 428327, 428537, 428689, 4284251, B41M 516

Patent

active

043248179

ABSTRACT:
A "one-component" carbonless copying paper, comprising paper having on the same surface thereof (1) a color former encapsulated in walls of polyurea obtained by the reaction of a polyisocyanate with a polyamine and water, and (2) a developer capable of reacting with the color former to form a dyestuff, the developer having been formed in situ during the reaction of the polyisocyanate with the polyamine.

REFERENCES:
patent: 3900669 (1975-08-01), Kiritani

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