Water-soluble disazo compounds, aqueous ink compositions, and colored articles
AssigneeNippon Kayaku Kabushiki Kaisha
InventorsTakashi Miyazawa, Toru Tabei, Isao Yamaguchi, Yasuo Shirasaki, Junko Yoshioka
Life of this patent
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Abstract
Are disclosed disazo compounds represented by the general formula (1): ##STR1## wherein A represents a phenylene or naphthylene group which may be optionally substituted; each of R.sup.1 and R.sup.2 represent independently a hydrogen atom, an alkyl group or a phenyl group which may be optionally substituted; and m is 1 or 2. The compounds are highly water-soluble and are stable to long term storage. Ink compositions comprising the compounds of the invention can produce a printed image with full depth of shade and are excellent in resistance to water.
Claims16
A water-soluble disazo compound represented by the general formula (1):
- ##STR1634## wherein each of R.sup.1 and R.sup.2 represents independently a hydrogen atom, a C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.4 alkanoyl or hydroxy-(C.sub.1 -C.sub.4)alkyl group or a phenyl group which may be optionally substituted with CH.sub.3, OH, COOH, SO.sub.3 H, Cl, NH.sub.2 or OCH.sub.3, or a benzyl group which may be optionally substituted with Cl;
- each of R.sup.3 and R.sup.4 represents independently a C.sub.1 -C.sub.2 alkyl, C.sub.1 -C.sub.2 alkoxy, C.sub.2 -C.sub.4 alkanoylamino, or (C.sub.1 -C.sub.2)alkoxy-(C.sub.1 -C.sub.2)alkoxy group;
- with the proviso that R.sup.1 and R.sup.2 cannot both be hydrogen.
An aqueous ink composition comprising a disazo compound represented by the general formula (1):
- ##STR1636## wherein each of R.sup.1 and R.sup.2 represents independently a hydrogen atom, a C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.4 alkanoyl or hydroxy-(C.sub.1 -C.sub.4)alkyl group or a phenyl group which may be optionally substituted with CH.sub.3, OH, COOH, SO.sub.3 H, Cl, NH.sub.2 or OCH.sub.3, or benzyl group which may be optionally substituted with Cl;
- each of R.sup.3 and R.sup.4 represents independently a C.sub.1 -C.sub.2 alkyl, C.sub.1 -C.sub.2 alkoxy, C.sub.2 -C.sub.4 alkanoylamino, or (C.sub.1 -C.sub.2)alkoxy-(C.sub.1 -C.sub.2)alkoxy group;
- or the salt thereof.
A colored article colored with a disazo compound represented by the general formula (1):
- ##STR1637## wherein each of R.sup.1 and R.sup.2 represents independently a hydrogen atom, a C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.4 alkanoyl or hydroxy-(C.sub.1 -C.sub.4)alkyl group or a phenyl group which may be optionally substituted with CH.sub.3, OH, COOH, SO.sub.3 H, Cl, NH.sub.2 or OCH.sub.3, or a benzyl group which may be optionally substituted with Cl;
- each of R.sup.3 and R.sup.4 represents independently a C.sub.1 -C.sub.2 alkyl, C.sub.1 -C.sub.2 alkoxy, C.sub.2 -C.sub.4 alkanoylamino, or (C.sub.1 -C.sub.2)alkoxy-(C.sub.1 -C.sub.2)alkoxy group;
- or the salt thereof.
An aqueous ink composition comprising a disazo compound represented by the general formula (1):
- ##STR1638## wherein R.sup.1 and R.sup.2 represent a hydrogen atom, R.sup.3 represents a methyl, methoxy, ethoxy or methoxyethoxy group;
- R.sup.4 represents methoxy, ethoxy or an acetylamino group;
- or the salt thereof.
An aqueous ink composition comprising a disazo compound represented by the general formula (1):
- ##STR1639## wherein R.sup.1 represents a hydrogen atom, R.sup.2 represents a phenyl group which may be optionally substituted with CH.sub.3, OH, COOH, SO.sub.3 H, Cl, NH.sub.2 or OCH.sub.3, or benzyl group which may be optionally substituted wit Cl;
- R.sup.3 represents a methyl, methoxy or ethoxy group;
- R.sup.4 represents methoxy, ethoxy or an acetylamino group;
- or the salt thereof.
A colored article colored with a disazo compound represented by the general formula (1):
- ##STR1640## wherein R.sup.1 and R.sup.2 represent a hydrogen atom, R.sup.3 represents a methyl, methoxy, ethoxy or methoxyethoxy group;
- R.sup.4 represents methoxy, ethoxy or an acetylamino group;
- or the salt thereof.
A colored article colored with a disazo compound represented by the general formula (1):
- ##STR1641## wherein R.sup.1 represents a hydrogen atom, R.sup.2 represents a phenyl group which may be optionally substituted with CH.sub.3, OH, COOH, SO.sub.3 H, Cl, NH.sub.2 or OCH.sub.3, or benzyl group which may be optionally substituted with Cl;
- R.sup.3 represents a methyl, methoxy or ethoxy group;
- R.sup.4 represents methoxy, ethoxy or an acetylamino group;
- or the salt thereof.
Dependencies are inferred from the claim text.