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US 9,708,498 B2Granted
Azo compound, ink containing azo compound, display including said ink and electronic paper
AssigneeMitsubishi Chemical Corporation
InventorsYasushi Shiga, Tomoko Kadowaki, Yuki Tanaka, Mitsuya Aoba, Mio Ishida
Life of this patent
Estimating the term…
Abstract
The present invention relates to an ink comprising: a solvent having a relative permittivity, measured at a frequency of 1 kHz and a temperature of 22° C., of 3 or less and a solubility in water at 25° C. of 20 mg/L or less; and a specific azo compound.
Claims13
An ink comprising:
- a solvent having a relative permittivity, measured at a frequency of 1 kHz and a temperature of 22° C., of 3 or less and a solubility in water at 25° C. of 20 mg/L or less;
- and an azo compound represented by the following general formula (1):
- wherein in the general formula (1),
- R1 represents any substituent,
- R2 represents a hydrogen atom or any substituent,
- R3 and R4 each independently represent an alkyl group which may have a substituent, ring A represents general formula (2),
- X represents a nitrogen atom, a methine group, or a methine group having a substituent, and general formula (2) is represented by the following formula:
- wherein in the general formula (2),
- R5 represents a hydrogen atom or any substituent
6 more elements
An azo compound represented by the following general formula (10):
- wherein in the general formula (10),
- R21 represents any substituent,
- R22 and R23 each independently represent a hydrogen atom or any substituent,
- R24 and R25 each independently represent an alkyl group which may have a substituent,
- X2 represents a nitrogen atom or a methine group which may have a substituent, and
- n′ represents an integer of 0-5.
3 more elements
Dependencies are inferred from the claim text.