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US 2015/0191601 A1Published application
Azo compound, ink containing azo compound, and display and electronic paper containing the ink
AssigneeMitsubishi Chemical Corporation
InventorsYasushi SHIGA, Mitsuya AOBA, Yuki TANAKA, Mio ISHIDA
Life of this patent
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Abstract
An azo compound excellent in solubility in solvent and having a high absorbance coefficient is disclosed, as well as an ink containing the azo compound. Such an ink contains a solvent having a relative permittivity at 22° C. and at a measurement frequency of 1 kHz of 3 or less and having a solubility in water at 25° C. of 20 mg/L or less, and an azo compound.
Claims20
An ink, comprising:
- a solvent having a relative permittivity at 22° C. and at a measurement frequency of 1 kHz of 3 or less and having a solubility in water at 25° C. of 20 mg/L or less;
- and
- an azo compound represented by formula (1):
- wherein:
- R1 and R2 each independently represent a hydrocarbon group optionally having a substituent;
- and
- X1, X11, and A1 each independently represent a hydrogen atom or a substituent.
4 more elements
An ink, comprising:
- a solvent having a relative permittivity at 22° C. and at a measurement frequency of 1 kHz of 3 or less and having a solubility in water at 25° C. of 25 mg/L or less;
- and
- at least one of each of the following compounds (I) to compounds (IV)
- (I) a compound of which an n-decane solution has an absorption maximum wavelength of from 400 nm to less than 500 nm,
- (II) a compound of which an n-decane solution has an absorption maximum wavelength of from 500 nm to less than 570 nm,
- (III) a compound of which an n-decane solution has an absorption maximum wavelength of from 570 nm to less than 630 nm,
- (IV) a compound of which an n-decane solution has an absorption maximum wavelength of from 640 nm to 700 nm.
4 more elements
An azo compound represented by formula (8):
- wherein:
- R3 and R4 each independently represent an alkyl group having a carbon number of from 1 to 20 and optionally having a substituent;
- R5 represents an alkyl group having a branched chain and having a carbon number of from 4 to 20 and optionally having a substituent;
- X2 and X12 each independently represent a hydrogen atom or a substituent.
1 more element
Dependencies are inferred from the claim text.