Solvents, solutions, and pressure-sensitive mark-recording...

Details Solvents, solutions, and pressure-sensitive mark-recording... Solvents, solutions, and pressure-sensitive mark-recording...

B - Operations, Transporting

01

F

42/15

B01F 1/00 (2006.01) B41M 5/165 (2006.01)

Patent

CA 1155297

43-21-4593A SOLVENTS, SOLUTIONS, AND PRESSURE-SENSITIVE MARK-RECORDING SYSTEMS Abstract of the Disclosure 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 colour 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 sup- ported by the sheet material but separated from its sensitizing agent by a physical barrier which is rupturable on the application of the marking instru- ment 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.

358960

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