Heat-sensitive recording material

Details Heat-sensitive recording material Heat-sensitive recording material

1988-06-13

1990-05-01

Lieberman, Paul

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

427150, 427151, 503209, 503216, 503218, 503225, 565 79, C09D 1100

Patent

active

049215353

ABSTRACT:
A heat-sensitive recording material whose color reactant system comprises a color former, a developer for said color former and, in addition, a sulfamide compound of formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are each independently hydrogen, alkyl containing not more than 12 carbon atoms which is unsubstituted or substituted by halogen, hydroxy, cyano or lower alkoxy; C.sub.5 -C.sub.10 cycloalkyl; phenalkyl, phenyl or naphthyl, each unsubstituted or ring-substituted by halogen, cyano, lower alkyl or lower alkoxy, or --NR.sub.2 R.sub.3 is 5- or 6-membered, preferably saturated, heterocyclic radical; with the proviso that R.sub.1, R.sub.2 and R.sub.3 may not simultaneously by hydrogen.

REFERENCES:
patent: 3891703 (1975-06-01), Catt et al.
patent: 3934070 (1976-01-01), Kimuta et al.
patent: 4111703 (1978-09-01), Lawton
patent: 4291901 (1981-09-01), Petitpierre
patent: 4482905 (1984-11-01), Kaneko et al.
patent: 4531139 (1985-07-01), Seitz
patent: 4536220 (1985-08-01), Kondo et al.
patent: 4623391 (1986-11-01), Seitz

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