Pressure-sensitive record material and preparation thereof

Details Pressure-sensitive record material and preparation thereof Pressure-sensitive record material and preparation thereof

1979-06-08

1981-03-10

Hess, Bruce H.

Textiles: manufacturing

427150, 427151, 427152, 427180, 428307, 428330, 428914, B41M 522

Patent

active

042549710

ABSTRACT:
Novel pressure-sensitive manifold record material comprises paper coated on one side with an encapsulated solution of an alkali-sensitive color precursor such as phenolphthalein in a polar solvent and coated on the reverse side or on a separate sheet of paper with particles of a white alkaline pigment such as fluid energy milled lime. The sheets are assembled for manifold record material by stacking sheet material coated with encapsulated dye solution in face-to-face relationship with surfaces coated with alkaline pigment. Upon rupture of the capsules by printing pressure, a colored mark is formed on the surface containing the alkaline pigment particles.

REFERENCES:
patent: 3063864 (1962-11-01), Norman
patent: 3158506 (1964-11-01), Ellison
patent: 3287154 (1966-11-01), Haas
patent: 3432327 (1969-03-01), Kan et al.
patent: 3454344 (1969-07-01), Ryan et al.
patent: 3639158 (1972-02-01), Maskal et al.
patent: 3705049 (1972-12-01), Busch
patent: 4113282 (1978-09-01), Spatz et al.
Hackh's Chemical Dictionary, 4th ed., McGraw-Hill Book Co., p. 26.

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