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US RE34,877 EGranted
Azo dyes for thermotransfer printing
AssigneeBASF SE
InventorsVolker Bach, Karl-Heinz Etzbach, Sabine Gruettner, Gunther Lamm, Helmut Reichelt, Ruediger Sens
Life of this patent
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Abstract
Azo dyes useful for thermotransfer printing have the formula ##STR1##
Claims3
A process comprising printing a substrate by thermotransfer printing with a transfer dye which is an azo dye of the general formula I ##STR32## in which the substituents have the following meanings:
- R.sup.1 is hydrogen;
- C.sub.1 -C.sub.15 -alkyl, C.sub.1 -C.sub.15 -alkyl substituted by phenyl or phenoxy;
- cyclohexyl, cyclohexyl substituted by C.sub.1 -C.sub.5 -alkyl, C.sub.1 -C.sub.5 -alkoxy or halogen;
- phenyl, phenyl substituted by C.sub.1 -C.sub.5 -alkyl, C.sub.1 -C.sub.5 -alkoxy, sulfonamido or halogen;
- thienyl, thienyl substituted by C.sub.1 -C.sub.5 -alkyl or halogen;
- furanyl or pyridyl;
- a radical of the formula II
- [--W--O].sub.n --R.sup.4 II
- where
- W is identical or different C.sub.2 -C.sub.6 -alkylene,
- n is from 1 to 6 and
- R.sup.4 is C.sub.1 -C.sub.4 -alkyl, phenyl or benzyl;
- phenyl or benzyl substituted by C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy;
- R.sup.2 and R.sup.3 are each hydrogen;
- alkyl, alkoxy, alkoxyalkyl, alkanoyloxyalkyl, alkoxycarbonyloxyalkyl, alkoxycarbonylalkyl, haloalkyl, hydroxyalkyl or cyanoalkyl, each containing up to 15 carbon atoms;
- alkyl, alkoxyalkyl, alkanoyloxyalkyl, alkoxycarbonyloxyalkyl, alkoxycarbonylalkyl, haloalkyl, hydroxyalkyl or cyanoalkyl, each containing up to 15 carbon atoms, substituted by phenyl, C.sub.1 -C.sub.4 -alkylphenyl, C.sub.1 -C.sub.4 -alkoxyphenyl, halophenyl, benxyloxy, C.sub.1 -C.sub.4 -alkylbenzyloxy, C.sub.1 -C.sub.4 -alkoxybenzyloxy, halogenzyloxy, halogen, hydroxyl or by cyano;
- cyclohexyl, cyclohexyl substituted by C.sub.1 -C.sub.15 -alkyl, C.sub.1 -C.sub.15 -alkoxy or halogen;
- phenyl, phenyl substituted by C.sub.1 -C.sub.15 -alkyl, C.sub.1 -C.sub.15 -alkoxy, benzyloxy or halogen;
- a radical of the above-mentioned formula II;
- and
- D is the radical of a diazo component III.
- D--NH.sub.2 III wherein D is the radical of a diazo component III of the aminothiophene, phenylazoaminothiophene, aminothiazole, phenylazoaminothiazole, aminoisothiazole, aminobenzisothiazole, aminothiadiazole, aminoisothiadiazole, aminooxazole, aminooxadiazole, aminodiazole, aminotriazole or aminopyrrole series.
19 more elements
A process comprising transferring an azo dye or dyes by diffusiton from a transfer to a plastic-coated substrate by means of a thermal printing head, wherein said azo dye or dyes is or are of the formula I ##STR33## in which the substituents have the following meanings:
- R.sup.1 on is hydrogen;
- C.sub.1 -C.sub.15 -alkyl, C.sub.1 -C.sub.15 -alkyl substituted by phenyl or phenoxy;
- cyclohexyl, cyclohexyl substituted by C.sub.1 -C.sub.5 -alkyl, C.sub.1 -C.sub.5 -alkoxy or halogen;
- phenyl, phenyl substituted by C.sub.1 -C.sub.5 -alkyl, C.sub.1 -C.sub.5 -alkoxy, sulfonamido or halogen;
- thienyl, thienyl substituted by C.sub.1 -C.sub.5 -alkyl or halogen;
- furanyl or pyridyl;
- a radical of the formula II
- [--W--O].sub.n --R.sup.4 II
- where
- W is identical or different C.sub.2 -C.sub.6 -alkylene,
- n is from 1 to 6 and
- R.sup.4 is C.sub.1 -C.sub.4 -alkyl, phenyl or benzyl;
- phenyl or benzyl substituted by C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy;
- R.sup.2 and R.sup.3 are each hydrogen;
- alkyl, alkoxy, alkoxyalkyl, alkanoyloxyalkyl, alkoxycarbonyloxyalkyl, alkoxycarbonylalkyl, haloalkyl, hydroxyalkyl or cyanoalkyl, each containing up to 15 carbon atoms;
- alkyl, alkoxy, alkoxyalkyl, alkanoyloxyalkyl, alkoxycarbonyloxyalkyl, alkoxycarbonylalkyl, haloalkyl, hydroxyalkyl or cyanoalkyl, each containing up to 15 carbon atoms, substituted by phenyl, C.sub.1 -C.sub.4 -alkylphenyl, C.sub.1 -C.sub.4 -alkoxyphenyl, halophenyl, benzyloxy, C.sub.1 -C.sub.4 -alkylbenzyloxy, C.sub.1 -C.sub.4 -alkoxybenzyloxy, halogenzyloxy, halogen, hydroxyl or by cyano;
- cyclohexyl, cyclohexyl substituted by C.sub.1 -C.sub.15 -alkyl, C.sub.1 -C.sub.15 -alkoxy or halogen;
- phenyl, phenyl substituted by C.sub.1 -C.sub.5 -alkyl, C.sub.1 -C.sub.5 -alkoxy, C.sub.1 -C.sub.15 -alkoxy, benzyloxy or halogen;
- a radical of the above-mentioned formula II;
- and
- D is the radical of a diazo component III
- D--NH.sub.2 III wherein D is the radical of a diazo component III of the aminothiophene, phenylazominothiophene, aminothiazole, phenylazominothiazole, aminoisothiazole, aminobenzisothiazole, aminothiadiazole, aminoisothiadiazole, aminooxazole, aminooxadiazole, aminoidazole, aminotriazole or aminopyrrole series.
19 more elements
Dependencies are inferred from the claim text.