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US 9,200,171 B2Granted
AZO compound and ink containing the compound
AssigneeMitsubishi Chemical Corporation
InventorsUtako Takeda, Shoko Ichinosawa, Yuki Tanaka, Hiroyuki Aikyo, Mio Ishida
Life of this patent
Estimating the term…
Abstract
An object of the present invention is to provide an ink containing an azo compound which is excellent in solubility in a solvent and has a high extinction coefficient. The present invention relates to an ink comprising a solvent having a relative permittivity of 3 or less, as measured at a frequency of 1 kHz and at 22° C. and having a solubility in water of 20 mg/L or less at 25° C. and a specific azo compound.
Claims16
An ink comprising:
- a solvent having a relative permittivity of 3 or less, as measured at a frequency of 1 kHz and at 22° C., and having a solubility in water of 20 mg/L or less at 25° C.;
- and an azo compound, the azo compound being represented by formula (I):
- wherein
- R1, R2, D1, and A1 each independently represent an arbitrary substituent,
- A2 represents a substituent of formula (II):
- wherein D2 represents an arbitrary substituent, n represents an integer of 1 to 5, and when n is 2 or larger, two or more D2 groups present in one molecule may be the same or different,
- m represents an integer of 1 to 4, and when m is 2 or larger, two or more D1 groups present in one molecule may be the same or different, and
- X represents a nitrogen atom or an optionally substituted methine group.
5 more elements
An azo compound represented by formula (IX):
- wherein
- R701 and R702 each independently represent an optionally substituted branched alkyl group having 5 to 20 carbon atoms,
- D11 represents a hydrogen atom, a halogen atom, an optionally substituted alkyl group having 1 to 20 carbon atoms, an optionally substituted alkoxy group having 1 to 20 carbon atoms, an —NHCOR703 group, or an —NHSO2R708 group,
- R703 and R708 each independently represent an optionally substituted alkyl group having 1 to 20 carbon atoms, an optionally substituted aryl group having 6 to 20 carbon atoms, or an optionally substituted heteroaryl group having 2 to 20 carbon atoms,
- d represents an integer of 1 to 4, and when d is 2 or larger, two or more D11 groups present in one molecule may be the same or different,
- A5 represents a hydrogen atom, a halogen atom, a cyano group, an optionally substituted alkyl group having 1 to 20 carbon atoms, an optionally substituted aryl group having 6 to 20 carbon atoms, an optionally substituted heteroaryl group having 2 to 20 carbon atoms, an optionally substituted alkoxy group having 1 to 20 carbon atoms, or a —COOR704 group,
- R704 represents an optionally substituted alkyl group having 1 to 20 carbon atoms, an optionally substituted aryl group having 6 to 20 carbon atoms, or an optionally substituted heteroaryl group having 2 to 20 carbon atoms,
- D10 represents an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms or a —COOR706 group,
- b represents an integer of 1
- R706 represents an alkyl group having 1 to 20 carbon atoms,
- X3 represents a nitrogen atom, or a methine group which may have a halogen atom, a cyano group, or a —COOR707 group as a substituent, and
- R707 represents an optionally substituted alkyl group having 1 to 20 carbon atoms, an optionally substituted aryl group having 6 to 20 carbon atoms, or an optionally substituted heteroaryl group having 2 to 20 carbon atoms.
9 more elements
Dependencies are inferred from the claim text.