US5258505A
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Trisazo compounds, and dye compositions containing same
Assignee: Canon Inc
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Filing: 1992-03-27
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Granted: 1993-11-02
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Expires: 2012-03-27
Abstract
Abstract Disclosed herein is an azo compound represented by the formula ##STR1## wherein R 1 , R 2 and R 3 each are a group or atom selected from the group consisting of a hydrogen atom, alkyl groups having 1 to 4 carbon atoms, a methoxy group, halogen atoms, COOM and COOR 4 in which R 4 is an alkyl group having 1 to 4 carbon atoms, and M denotes an alkali metal atom, or an ammonium or organic ammonium ion. An ink containing this compound is suitable for use in an ink-jet recording.
Inventors
- 👤 Tsuyoshi Eida
- 👤 Mayumi Yamamoto
- 👤 Takao Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:49
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/328; B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/175; C09B; C09B31/00; C09B31/16; C09B31/18
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
71 words
An azo compound represented by the formula ##STR19## wherein R 1 , R 2 and R 3 each are selected from the group consisting of hydrogen, an alkyl having 1 to 4 carbon atoms, methoxy, halogen, COOM and COOR 4 , and in which R 4 is an alkyl having 1 to 4 carbon atoms, and M denotes an alkali metal, ammonium or at least one of ethylammonium and ethanol ammonium.
Claim 2
Dependent Claim
71 words
An azo compound represented by the formula ##STR19## wherein R 1 , R 2 and R 3 each are selected from the group consisting of hydrogen, an alkyl having 1 to 4 carbon atoms, methoxy, halogen, COOM and COOR 4 , and in which R 4 is an alkyl having 1 to 4 carbon atoms, and M denotes an alkali metal, ammonium or at least one of ethylammonium and ethanol ammonium.
Claim 3
Dependent Claim
38 words
The azo compound according to claim 1, which is selected from the group consisting of the following compounds No. 1 through No. 12: ##STR20## wherein M means an alkali metal atom, or an ammonium or organic ammonium ion.
Claim 4
Dependent Claim
79 words
A black dye composition comprising, as a principal component, an azo compound represented by the formula ##STR21## wherein R 1 , R 2 and R 3 each are selected from the group consisting of hydrogen, an alkyl having 1 to 4 carbon atoms, methoxy, halogen, COOM and COOR 4 , and in which R 4 is alkyl having 1 to 4 carbon atoms, and M denotes an alkali metal, ammonium or at least one of ethylammonium and ethanol ammonium.
Claim 5
Dependent Claim
79 words
A black dye composition comprising, as a principal component, an azo compound represented by the formula ##STR21## wherein R 1 , R 2 and R 3 each are selected from the group consisting of hydrogen, an alkyl having 1 to 4 carbon atoms, methoxy, halogen, COOM and COOR 4 , and in which R 4 is alkyl having 1 to 4 carbon atoms, and M denotes an alkali metal, ammonium or at least one of ethylammonium and ethanol ammonium.
Claim 6
Dependent Claim
46 words
The black dye composition according to claim 3, which comprises, as a principal component, an azo compound selected from the group consisting of the following compounds No. 1 through No. 12: ##STR22## wherein M means an alkali metal atom, or an ammonium or organic ammonium ion.
Claim 7
Dependent Claim
96 words
An ink comprising a recording agent and a liquid medium dissolving or dispersing the recording agent therein, wherein the ink contains, as the recording agent, an azo compound represented by the formula ##STR23## wherein R 1 , R 2 and R 3 each are selected from the group consisting of hydrogen, an alkyl having 1 to 4 carbon atoms, methoxy, halogen, COOM and COOR 4 , and in which R 4 is an alkyl having 1 to 4 carbon atoms, and M denotes an alkali metal, ammonium or at least one of ethylammonium and ethanol ammonium.
Claim 8
Dependent Claim
96 words
An ink comprising a recording agent and a liquid medium dissolving or dispersing the recording agent therein, wherein the ink contains, as the recording agent, an azo compound represented by the formula ##STR23## wherein R 1 , R 2 and R 3 each are selected from the group consisting of hydrogen, an alkyl having 1 to 4 carbon atoms, methoxy, halogen, COOM and COOR 4 , and in which R 4 is an alkyl having 1 to 4 carbon atoms, and M denotes an alkali metal, ammonium or at least one of ethylammonium and ethanol ammonium.
Claim 9
Dependent Claim
44 words
The ink according to claim 5, which contains, as the recording agent, at least one compound selected from the group consisting of the following compounds No. 1 through No. 12: ##STR24## wherein M means an alkali metal atom, or ammonium or organic ammonium ion.
Claim 10
Dependent Claim
17 words
The ink according to claim 5, wherein the pH of the ink ranges from 4 to 10.
Claim 11
Dependent Claim
28 words
The ink according to claim 5, wherein the recording agent is contained in an amount of 0.1 to 15% by weight of the total weight of the ink.
Claim 12
Dependent Claim
21 words
The ink according to claim 5, wherein the liquid medium comprises a mixed solvent of water and a water-soluble organic solvent.
Claim 13
Dependent Claim
27 words
The ink according to claim 9, wherein the water is contained in an amount of 10 to 97.5% by weight of the total weight of the ink.
Claim 14
Dependent Claim
29 words
The ink according to claim 9, wherein the water-soluble organic solvent is contained in an amount of 2 to 80% by weight of the total weight of the ink.
Claim 15
Dependent Claim
16 words
The ink according to claim 9, wherein the water-soluble organic solvent comprises at least one glycol.
Claim 16
Dependent Claim
18 words
The ink according to claim 12, wherein the glycol is at least one of diethylene glycol and thiodiglycol.
Claim 17
Dependent Claim
12 words
The ink according to claim 5, which is used for ink-jet recording.
Claim 18
Dependent Claim
19 words
The ink according to claim 14, which comprises at least a recording agent, a water-soluble organic solvent and water.
Claim 19
Dependent Claim
16 words
The ink according to claim 15, wherein the water-soluble organic solvent comprises at least one glycol.
Claim 20
Dependent Claim
18 words
The ink according to claim 16, wherein the glycol is at least one of diethylene glycol and thiodiglycol.
Claim 21
Dependent Claim
17 words
The ink according to claim 17, which comprises, as additives, at least one of 2-propanol and triethanolamine.
Claim 22
Dependent Claim
17 words
The according to claim 18, which comprises at least a recording agent, water, thiodiglycol, 2-propanol and triethanolamine.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-11-01 | 1997-05-03 | 1997-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-01 | 2001-05-03 | 2001-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-01 | 2005-05-03 | 2005-11-02 | $7700.00 | Window Closed / Lapsed |