US5034058A
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Aqueous ink composition
Assignee: Orient Chemical Industries Ltd
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Filing: 1989-06-15
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Granted: 1991-07-23
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Expires: 2009-06-15
Abstract
Abstract The present invention provides an aqueous ink composition which has excellent physical properties in all aspects. More specifically, the present invention relates to an aqueous ink composition, comprising (a) an aqueous medium, and (b) and azo dye which has a hydroxyl group and/or an amino group, and also has 1 to 4 phosphorus-containing groups represented by the formula; <IMAGE> [I] wherein x represents an oxygen atom or an alkylene group having 1 to 4 carbon atoms, M represents a hydrogen atom, an alkali metal atom or -NH(R)3 (wherein R, which is the same or different, represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group having 1 to 4 carbon atoms), m represents 0 or 1, and n represents 0 or 1.
Inventors
- 👤 Kazutoshi Akiyama
- 👤 Takashi Ono
- 👤 Tatsuya Yagyu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:53
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/16; C09D11/17; C09D11/30; C09D11/32; C09D11/328
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
151 words
An aqueous ink composition, which comprises (a) an aqueous medium, and (b) an effective amount of a monoazo dye, a diazo dye or a triazo dye for improving stability and plugging properties, which have either a hydroxyl group or an amino group, or both a hydroxyl group and an amino group, and which also have 1 to 4 phosphorus-containing groups represented by formula (I): ##STR7## wherein X represents an oxygen atom or an alkylene group having 1 to 4 carbon atoms, M represents a hydrogen atom, an alkali metal atom selected from the group consisting of a lithium atom, a sodium atom and a potassium atom, or --NH(R) 3 , wherein R, which is the same or different, represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group having 1 to 4 carbon atoms, represents 0 to 1, and n represents 0 or 1.
Claim 2
Dependent Claim
151 words
An aqueous ink composition, which comprises (a) an aqueous medium, and (b) an effective amount of a monoazo dye, a diazo dye or a triazo dye for improving stability and plugging properties, which have either a hydroxyl group or an amino group, or both a hydroxyl group and an amino group, and which also have 1 to 4 phosphorus-containing groups represented by formula (I): ##STR7## wherein X represents an oxygen atom or an alkylene group having 1 to 4 carbon atoms, M represents a hydrogen atom, an alkali metal atom selected from the group consisting of a lithium atom, a sodium atom and a potassium atom, or --NH(R) 3 , wherein R, which is the same or different, represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group having 1 to 4 carbon atoms, represents 0 to 1, and n represents 0 or 1.
Claim 3
Dependent Claim
16 words
The ink composition according to claim 1, which comprises 1 to 4 hydroxyl or amino groups.
Claim 4
Dependent Claim
27 words
The ink composition according to claim 1, wherein the azo dye further comprises --SO 3 M, --COOM, or a combination thereof, wherein M is as defined above.
Claim 5
Dependent Claim
21 words
The ink composition according to claim 1, wherein the azo dye is an acid azo dye or a direct azo dye.
Claim 6
Dependent Claim
79 words
An aqueous ink composition, which comprises (a) an aqueous medium, and (b) an effective amount of a monoazo dye, a diazo dye or a triazo dye for improving stability and plugging properties, which have either a hydroxyl group or an amino group, or both a hydroxyl group and an amino group, and which also have 1 to 4 phosphorus-containing groups represented by formula (I): ##STR8## wherein groups represented by formula (I) are selected from the groups consisting of: ##STR9##
Claim 7
Dependent Claim
79 words
An aqueous ink composition, which comprises (a) an aqueous medium, and (b) an effective amount of a monoazo dye, a diazo dye or a triazo dye for improving stability and plugging properties, which have either a hydroxyl group or an amino group, or both a hydroxyl group and an amino group, and which also have 1 to 4 phosphorus-containing groups represented by formula (I): ##STR8## wherein groups represented by formula (I) are selected from the groups consisting of: ##STR9##
Claim 8
Dependent Claim
90 words
An aqueous ink composition, which comprises (a) an aqueous medium, and (b) an effective amount for improving stability and plugging of an azo dye selected from the group consisting of formulas: ##STR10## wherein M represents a hydrogen atom, an alkali metal atom selected or --NH(R) 3 , wherein R, which is the same or different, represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group having 1 to 4 carbon atoms, where m represents 0 to 1, and n represents 0 or 1.
Claim 9
Dependent Claim
90 words
An aqueous ink composition, which comprises (a) an aqueous medium, and (b) an effective amount for improving stability and plugging of an azo dye selected from the group consisting of formulas: ##STR10## wherein M represents a hydrogen atom, an alkali metal atom selected or --NH(R) 3 , wherein R, which is the same or different, represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group having 1 to 4 carbon atoms, where m represents 0 to 1, and n represents 0 or 1.
Claim 10
Dependent Claim
22 words
The ink composition according to claim 6, wherein the aqueous medium is water or a mixture of water and an organic solvent.
Claim 11
Dependent Claim
15 words
The ink composition according to claim 7, wherein the organic solvent is a polar solvent.
Claim 12
Dependent Claim
35 words
The ink composition according to claim 7, wherein the organic solvent is selected from the group consisting of a monoalcohol, a polyhydric alcohol, a hydroxyether, a hydroxyether ester ether, formamide, N, N-dimethylformamide, dimethylsulfoxide, and N-methyl-2-pyrrolidone.
Claim 13
Dependent Claim
30 words
The ink composition according to claim 6, wherein said azo dye is present in the ink composition in an amount of 3% to 15% by weight for a ball-point pen.
Claim 14
Dependent Claim
22 words
The ink composition according to claim 10, wherein said azo dye is present in an amount of 5% to 10% by weight.
Claim 15
Dependent Claim
25 words
The ink composition according to claim 6, wherein the azo dye is present in an amount of 1% to 10% by weight for ink-jet recording.
Claim 16
Dependent Claim
22 words
The ink composition according to claim 12, wherein said azo dye is present in an amount of 1% to 3% by weight.
Claim 17
Dependent Claim
32 words
An aqueous ink composition, which comprises: (a) an aqueous medium, and (b) an effective amount for improving stability and plugging of an azo dye selected from the group consisting of formulas: ##STR11##
Claim 18
Dependent Claim
32 words
An aqueous ink composition, which comprises: (a) an aqueous medium, and (b) an effective amount for improving stability and plugging of an azo dye selected from the group consisting of formulas: ##STR11##
Claim 19
Dependent Claim
14 words
An ink for a ball-point pen composed of the composition according to claim 6.
Claim 20
Dependent Claim
14 words
An ink for a ink-jet recording composed of the composition according to claim 6.
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