Solvents useful in pressure-sensitive mark-recording systems

Details Solvents useful in pressure-sensitive mark-recording systems Solvents useful in pressure-sensitive mark-recording systems

1980-08-18

1982-06-15

Lovering, Richard D.

Compositions

Solvents

106 21, 252316, 282 275, 428914, 4283206, B01F 100

Patent

active

043350135

ABSTRACT:
A pressure-sensitive mark-recording system comprising (a) sheet material, (b) mark-forming components supported by the sheet material and arranged in juxtaposition comprising a chromogen material and an acid clay sensitizing agent for the chromogenic material which produces a color from the chromogenic material when brought into contact with the chromogenic material in the presence of a solvent for the chromogenic material with the solvent supported by the sheet material but separated from its sensitizing agent by a physical barrier which is rupturable on the application of the marking instrument to the sheet material, the invention characterized in that the liquid solvent is a solvent comprised of a blend of aromatic hydrocarbon components in which at least one-half the carbon atoms are benzenoid or a mixture of such hydrocarbons, and a diester component.

REFERENCES:
patent: 3836383 (1974-09-01), Kiritani et al.
patent: 3979327 (1976-09-01), Herber
patent: 4070303 (1978-01-01), Ohkubo et al.
patent: 4191403 (1980-03-01), Dessauer et al.

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