US 5,210,200 A · Heterocyclic dye compounds

Abstract

A dye compound of a general formula (I): ##STR1## where R.sub.1 represents a hydrogen atom, or a substituent; R.sub.2 and R.sub.3 independently represent a substituent; X represents a nitrogen atom or --C(R.sub.5).dbd.; R.sub.5 represents a substituent; and R.sub.4 represents an aromatic group or an unsaturated heterocyclic group as bonded to the nitrogen atom in the formula via an unsaturated carbon atom, which dye compound is fast to heat and light and is useful for color image formation and as a filter dye; and a thermal transfer dye donating material having a dye donating layer containing a thermal transferring dye on a support, where the thermal transferring dye is represented by: ##STR2## where X.sup.2 represents --N.dbd., or --C(R.sup.22).dbd.; R.sup.21, R.sup.22, R.sup.23 and R.sup.24 independently represent a hydrogen atom, or a non-metallic substituent; R.sup.25, R.sup.26, R.sup.27 and R.sup.28 independently represent a hydrogen atom, or a substituent substitutable on the benzene ring in the formula; R.sup.29 and R.sup.210 independently represent a hydrogen atom, an alkyl group, an aryl group, or a heterocyclic group; and R.sup.21 and R.sup.22, and/or R.sup.22 and R.sup.23, and/or R.sup.21 and R.sup.24, and/or R.sup.25 and R.sup.26, and/or R.sup.26 and R.sup.29, and/or R.sup.29 and R.sup.210, and/or R.sup.27 and R.sup.210, and/or R.sup.27 and R.sup.28 each combine and form a ring.

Claims8

Dependent claims

A dye compound of general formula (I):

##STR30## wherein R.sub.1 is selected from a group consisting of a hydrogen atom, a halogen atom, an aliphatic group, an aromatic group, a heterocyclic group, an alkoxy group, an aryloxy group, an alkenyloxy group, an amino group, an aliphatic, aromatic or heterocyclic acyl group, an aliphatic or aromatic oxycarbonyl group, an aliphatic or aromatic acyloxy group, an aliphatic or aromatic oxysulfonyl group, an aliphatic or aromatic sulfonyloxy group, an acylamino group, a carbamoyl group, a sulfonamido group, a sulfamoyl group, a sulfamido group, an imido group, a ureido group, an aliphatic, aromatic or heterocyclic sulfonyl group, an aliphatic or aromatic thio group, a hydroxyl group, a cyano group, a carboxyl group or a salt thereof, a nitro group and a sulfonic acid group or a salt thereof;
R.sub.2 and R.sub.3 each is a substituent having a Hammett's substituent constant .sigma..sub.p of 0.10 or more;
X represents a nitrogen atom or ##STR31## R.sub.5 represents a substituent having a Hammett's substituent constant .sigma..sub.p of at least 0.35;
and
R.sub.4 represent an aromatic group of an unsaturated heterocyclic group bonded to the nitrogen atom in the formula via an unsaturated carbon atom.

2 more elements

Dependencies are inferred from the claim text.

Heterocyclic dye compounds

Life of this patent

Heterocyclic dye compounds

Life of this patent

Abstract

Claims8