Pressure-sensitive copying paper sheets

Details Pressure-sensitive copying paper sheets Pressure-sensitive copying paper sheets

1979-03-13

1981-03-03

Hess, Bruce H.

Textiles: manufacturing

252316, 427150, 427151, 428307, 428537, 428914, B41M 516, B41M 522

Patent

active

042536820

ABSTRACT:
Pressure-sensitive copying paper containing a solution of a dye-precursor agent in microencapsulated form, wherein the dye-precursor agent is dissolved in a hydrophobic organic solvent and encapsulated in capsules composed of the polyaddition product of a diisocyanate of Formula (I) ##STR1## wherein R represents a divalent aliphatic radical, and a diamine.

REFERENCES:
patent: 3748329 (1973-07-01), Liebsch et al.
patent: 4021595 (1977-05-01), Kiritani et al.

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