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US 2009/0005546 A1Published application
Azo compound and method of preparing the azo compound
AssigneeRicoh Company, Ltd.
InventorMasafumi Ohta
Life of this patent
Estimating the term…
Abstract
An azo compound having the following formula (I): A(E)n (I) wherein A represents a residue of an azo compound, bonded with n pieces of E group through one or more heteroatom being N or O and forming a part of the residue A; E independently represents a hydrogen atom or —C(═O)—O—R1 wherein R1 represents a substituted or an unsubstituted alkyl group having 4 to 10 carbon atoms, an alkenyl group, an alkynyl group, a cycloalkyl group, a cycloalkenyl group or an aralkyl group; and n represents an integer of from 1 to 10.
Claims19
An azo compound having the following formula (I):
- A(E)n (I)
- wherein A represents a residue of an azo compound, bonded with n pieces of E group through one or more heteroatom being N or O and forming a part of the residue A;
- E independently represents a hydrogen atom or —C(═O)—O—R1 wherein R1 represents a substituted or an unsubstituted alkyl group having 4 to 10 carbon atoms, an alkenyl group, an alkynyl group, a cycloalkyl group, a cycloalkenyl group or an aralkyl group;
- and n represents an integer of from 1 to 10.
1 more element
A method of preparing an azo pigment, comprising:
- chemically, thermally or photolytically de-carbo esterifying an azo compound having the formula (I) to form an azo compound A(H)n:
- A(E)n (I)
- wherein A represents a residue of an azo compound, bonded with n pieces of E group through one or more heteroatom being N or O and forming apart of the residue A;
- E independently represents a hydrogen atom or —C(═O)—O—R1 wherein R1 represents a substituted or an unsubstituted alkyl group having 4 to 10 carbon atoms, an alkenyl group, an alkynyl group, a cycloalkyl group, a cycloalkenyl group or an aralkyl group;
- and n represents an integer of from 1 to 10.
2 more elements
Dependencies are inferred from the claim text.