US5861447A
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Aqueous pigment ink composition
Assignee: Orient Chemical Industries Ltd
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Filing: 1997-07-18
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Granted: 1999-01-19
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Expires: 2017-07-18
Abstract
Abstract An aqueous pigment ink composition comprising an oxidized carbon black obtained by wet-oxidation of a carbon black using a hypohalous acid and/or salt thereof, and a water-soluble cationic polymer or oligomer in an aqueous medium. The aqueous pigment ink composition of the present invention does not cause clogging in a nozzle when used for ink jet recording, enables smooth writing from a narrow pen tip, and provides a recorded image excellent in water resistance and light resistance and excellent in density and hue.
Inventors
- 👤 Toshiyuki Nagasawa
- 👤 Sohko Itoh
- 👤 Aiko Okamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:40
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/324; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/565; C09D11/16; C09D11/17; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/64; C01P2006/00; C01P2006/22
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
35 words
An aqueous pigment ink composition comprising an oxidized carbon black obtained by wet-oxidation of a carbon black using a hypohalous acid and/or salt thereof, and a water-soluble cationic polymer or oligomer in an aqueous medium.
Claim 2
Dependent Claim
35 words
An aqueous pigment ink composition comprising an oxidized carbon black obtained by wet-oxidation of a carbon black using a hypohalous acid and/or salt thereof, and a water-soluble cationic polymer or oligomer in an aqueous medium.
Claim 3
Dependent Claim
33 words
The aqueous pigment ink composition according to claim 1, wherein, said oxidized carbon black is obtained by wet-oxidation of a carbon black finely dispersed in water using a hypohalous acid and/or salt thereof.
Claim 4
Dependent Claim
25 words
The aqueous pigment ink composition according to claim 1, wherein, the oxygen content of said oxidized carbon black is not less than 5.0% by weight.
Claim 5
Dependent Claim
25 words
The aqueous pigment ink composition according to claim 1, wherein, the average particle size of said oxidized carbon black is not more than 300 nm.
Claim 6
Dependent Claim
35 words
The aqueous pigment ink composition according to claim 1, wherein, the content of said oxidized carbon black is from 0.1 to 50% by weight based on the total amount of the aqueous pigment ink composition.
Claim 7
Dependent Claim
27 words
The aqueous pigment ink composition according to claim 1, wherein, the weight average molecular weight of said water-soluble cationic polymer or oligomer is not more than 100000.
Claim 8
Dependent Claim
27 words
The aqueous pigment ink composition according to claim 1, wherein, the number average molecular weight of said water-soluble cationic polymer or oligomer is not more than 50000.
Claim 9
Dependent Claim
28 words
The aqueous pigment ink composition according to claim 1, wherein, said water-soluble cationic polymer or oligomer is selected from the group consisting of polyallylamine, polyethyleneimine, polyvinylamine and polyvinylpyrrolidone.
Claim 10
Dependent Claim
37 words
The aqueous pigment ink composition according to claim 1, wherein, the content of said water-soluble cationic polymer or oligomer is from 0.1 to 20% by weight based on the total amount of the aqueous pigment ink composition.
Claim 11
Dependent Claim
14 words
An ink jet recording solution comprising the aqueous pigment ink composition of claim 1.
Claim 12
Dependent Claim
15 words
An ink solution for writing implements comprising the aqueous pigment ink composition of claim 1.
Claim 13
Dependent Claim
33 words
An aqueous pigment ink composition comprising an oxidized carbon black obtained by wet-oxidation of a carbon black using a hypohalous acid and/or salt thereof, and a water-soluble cationic surfactant in an aqueous medium.
Claim 14
Dependent Claim
33 words
An aqueous pigment ink composition comprising an oxidized carbon black obtained by wet-oxidation of a carbon black using a hypohalous acid and/or salt thereof, and a water-soluble cationic surfactant in an aqueous medium.
Claim 15
Dependent Claim
33 words
The aqueous pigment ink composition according to claim 12, wherein, said oxidized carbon black is obtained by wet-oxidation of a carbon black finely dispersed in water using a hypohalous acid and/or salt thereof.
Claim 16
Dependent Claim
25 words
The aqueous pigment ink composition according to claim 12, wherein, the oxygen content of said oxidized carbon black is not less than 5.0% by weight.
Claim 17
Dependent Claim
26 words
The aqueous pigment ink composition according to claim 12, wherein, the average particle size of said oxidized carbon black i s not more than 300 nm.
Claim 18
Dependent Claim
35 words
The aqueous pigment ink composition according to claim 12, wherein, the content of said oxidized carbon black is from 0.1 to 50% by weight based on the total amount of the aqueous pigment ink composition.
Claim 19
Dependent Claim
37 words
The aqueous pigment ink composition according to claim 12, wherein, said water-soluble cationic surfactant is a cationic surfactant selected from the group consisting of aliphatic amine salts, quaternary ammonium salts, pyridinium salts, imidazolinium salts and benzotonium salts.
Claim 20
Dependent Claim
35 words
The aqueous pigment ink composition according to claim 12, wherein, the content of said water-soluble cationic surfactant is from 0.01 to 20% by weight based on the total amount of the aqueous pigment ink composition.
Claim 21
Dependent Claim
14 words
An ink jet recording solution comprising the aqueous pigment ink composition of claim 12.
Claim 22
Dependent Claim
15 words
An ink solution for writing implements comprising the aqueous pigment ink composition of claim 12.
Claim 23
Dependent Claim
32 words
An aqueous pigment ink composition comprising an oxidized carbon black obtained by wet-oxidation of a carbon black using a hypohalous acid and/or salt thereof, and a basic dye in an aqueous medium.
Claim 24
Dependent Claim
32 words
An aqueous pigment ink composition comprising an oxidized carbon black obtained by wet-oxidation of a carbon black using a hypohalous acid and/or salt thereof, and a basic dye in an aqueous medium.
Claim 25
Dependent Claim
33 words
The aqueous pigment ink composition according to claim 21, wherein, said oxidized carbon black is obtained by wet-oxidation of a carbon black finely dispersed in water using a hypohalous acid and/or salt thereof.
Claim 26
Dependent Claim
48 words
The aqueous pigment ink composition according to claim 21, wherein, at least a part of acidic groups existing on the surface of said oxidized carbon black is neutralized with at least one basic compound selected from the group consisting of ammonia, alkylamines, alkanolamines, alkylalkanolamines and alkaline metal hydroxides.
Claim 27
Dependent Claim
25 words
The aqueous pigment ink composition according to claim 21, wherein, the oxygen content of said oxidized carbon black is not less than 3% by weight.
Claim 28
Dependent Claim
25 words
The aqueous pigment ink composition according to claim 21, wherein, the average particle size of said oxidized carbon black is not more than 300 nm.
Claim 29
Dependent Claim
35 words
The aqueous pigment ink composition according to claim 21, wherein, the content of said oxidized carbon black is from 0.1 to 50% by weight based on the total amount of the aqueous pigment ink composition.
Claim 30
Dependent Claim
34 words
The aqueous pigment ink composition according to claim 21, wherein, the content of said basic dye is from 0.01 to 20% by weight based on the total amount of the aqueous pigment ink composition.
Claim 31
Dependent Claim
14 words
An ink jet recording solution comprising the aqueous pigment ink composition of claim 21.
Claim 32
Dependent Claim
15 words
An ink solution for writing implements comprising the aqueous pigment ink composition of claim 21.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-01-18 | 2002-07-20 | 2003-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-01-18 | 2006-07-20 | 2007-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-01-18 | 2010-07-20 | 2011-01-19 | $7700.00 | Window Closed / Lapsed |