Color developers for pressure-sensitive or heat-sensitive record

Details Color developers for pressure-sensitive or heat-sensitive record Color developers for pressure-sensitive or heat-sensitive record

1983-10-21

1985-07-23

Hess, Bruce H.

Recorders

Record receiver deforming

346216, 346225, 427150, 427151, B41M 516, B41M 518, B41M 522

Patent

active

045311390

ABSTRACT:
A color developer for use in pressure-sensitive or heat-sensitive recording papers comprise N-monosubstituted sulfonamides which contain at least one electron-withdrawing group within five atoms of the amido group of the sulfonamide. The N-monosubstituted sulfonamide may be in the form of an N-substituted, N'-mono or di-substituted sulfamide, or a polyfunctional molecule containing such an N-monosubstituted sulfonamide as the functional or impeding group thereof. The maximum color developing potential is realized when these compounds are used in conjunction with a source of metal or metal compound.

REFERENCES:
patent: 2948753 (1960-08-01), Kranz
patent: 3924027 (1975-12-01), Saito et al.
patent: 3934070 (1976-01-01), Kimura et al.
patent: 3958815 (1976-05-01), Poot et al.
patent: 4173684 (1979-11-01), Stolfo
patent: 4291901 (1981-09-01), Petitpierre

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