Coated pressure-sensitive recording material

Details Coated pressure-sensitive recording material Coated pressure-sensitive recording material

1975-01-23

1976-11-30

Ives, P. C.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428411, 428454, 428488, 427146, 427151, 428537, 428913, 282 275, B32B 522, B41M 512

Patent

active

039950883

ABSTRACT:
Pressure-sensitive copying material containing included in its Color-reactant system a mixture of at least two color formers, wherein at least one color former is a leuco methylene dyestuff of the formula ##EQU1## wherein Y represents an amino-substituted phenyl residue of the formula ##SPC1##
Or an indolyl residue of the formula ##SPC2##
Wherein R.sub.1 and R.sub.2, independently of the other represent hydrogen, alkyl with 1 to 12 carbon atoms, alkoxyalkyl with 2 to 8 carbon atoms, benzyl or phenyl, R.sub.3 is hydrogen, halogen, nitro, alkyl having 1 to 4 carbon atoms or alkoxy having 1 to 4 carbon atoms, X.sub.1 represents hydrogen, alkyl with 1 to 12 carbon atoms, alkenyl with at most 12 carbon atoms or benzyl, X.sub.2 represents hydrogen, alkyl with 1 to 12 carbon atoms or phenyl and the ring A is unsubstituted or substituted by cyano, nitro, halogen, alkyl having 1 to 4 carbon atoms, alkoxy having 1 to 4 carbon atoms or acyl with 1 to 8 carbon atoms, and Z represents alkyl with 1 to 12 carbon atoms, alkenyl with at most 12 carbon atoms, aryl, aralkyl, an heterocyclic radical or the residue of an organic, particularly aliphatic or cycloaliphatic compound having a ketomethylene group.

REFERENCES:
patent: 2755202 (1956-07-01), Balon et al.
patent: 2828342 (1958-03-01), Adams et al.
patent: 2900388 (1959-08-01), Tien
patent: 3418250 (1968-12-01), Vassiliades
patent: 3427180 (1969-02-01), Phillips, Jr.
patent: 3649649 (1972-03-01), Orita et al.

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