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US 7,193,067 B2Granted
Mono- and bis-hydrazone pigments
OwnerTerence Chamberlain, Norman W. Smith +1inventors
InventorsTerence Chamberlain, Norman W. Smith, Donald T. DeRussy
Life of this patent
Estimating the term…
Abstract
Mono- and Bis-Azo/Hydrazone Pyrrole Pigments and Methods for preparing same.
Claims6
A bis-azo/hydrazone pigment of the formula (IV):
- wherein:
- A is a substituted or unsubstituted aryl or substituted or unsubstituted heteroaryl radical;
- R′ is hydrogen, alkyl, aralkyl, aryl or heteroaryl;
- Z is hydrogen, CO—X—B, CN or COCH3;
- B is hydrogen, or a primary aliphatic, carbocyclic, aryl or heterocyclic radical;
- X is a divalent O or NH radical;
- and
- Q is a divalent substituted or unsubstituted aryl radical, a divalent substituted biphenyl radical or a divalent substituted or unsubstituted heteroaryl radical, where the substituent may be halogen, alkyl or alkoxy.
5 more elements
A process for preparing a bis-azo hydrazone pigment of the formula (IV)
- wherein:
- A is a substituted or unsubstituted aryl or substituted or unsubstituted heteroaryl radical;
- R′ is hydrogen, alkyl, aralkyl, aryl or heteroaryl;
- Z is hydrogen, CO—X—B, CN or COCH3;
- B is hydrogen, or a primary aliphatic, carbocyclic, aryl or heterocyclic radical;
- X is a divalent O or NH radical;
- and
- Q is a divalent substituted or unsubstituted aryl radical, a divalent substituted heteroaryl radical, where the substituent may be halogen, alkyl or alkoxy;
- comprising reacting a diamine compound of the formula H2N—W—NH2 where W is a divalent aliphatic, carbocyclic or heterocyclic radical, a divalent aryl radical or divalent heteroaryl radical, with a compound of the formula
- wherein:
- X, R′ and R are as defined above.
8 more elements
A process for preparing a bis-azo hydrazone pigment of the formula (IV)
- wherein:
- A is a substituted or unsubstituted aryl or substituted or unsubstituted heteroaryl radical;
- R′ is hydrogen, alkyl, aralkyl, aryl or heteroaryl;
- Z is hydrogen, CO—X—B, CN or COCH3;
- B is hydrogen, or a primary aliphatic, carbocyclic, aryl or heterocyclic radical;
- X is a divalent O or NH radical;
- and
- Q is a divalent substituted or unsubstituted aryl radical, a divalent substituted heteroaryl radical, where the substituent may be halogen, alkyl or alkoxy:
- comprising reacting a compound of the formula N2—M—N2 where M is a divalent aliphatic, carbocyclic or heterocyclic radical, a divalent aryl radical or divalent heteroaryl radical, with a compound of the formula
- wherein:
- X, R′ and R are as defined above.
8 more elements
Dependencies are inferred from the claim text.