US6402825B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface modified carbon black
Assignee: Funai Electric Co Ltd
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Filing: 2001-07-27
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Granted: 2002-06-11
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Expires: 2021-07-27
Abstract
Abstract The invention provides a surface modified carbon black and method for production. The surface modified carbon black is produced by reacting self-dispersing or oxidized carbon with a steric inducing compound via an organic acid halide intermediary. The steric inducing compounds are substantially soluble in the organic components of an ink composition and are reactive with an organic acid halide. Electrostatic and steric stability are provided by the surface modified carbon black. The surface modified carbon black exhibits solubility in aqueous and organic media and exhibits excellent resistance to coagulation within an ink jet printhead.
Inventors
- 👤 Jing X Sun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:04
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C07; C07C; C07C67/00; C07C67/14; C07D; C07D295/00; C07D295/04; C07D295/10
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
85 words
A method for producing surface modified carbon black comprising the steps of: reacting the carbon black containing surface carboxyl groups with thionyl halide under conditions sufficient to produce acid halide groups on the surface of the carbon black; and reacting carbon black containing acid halide groups on the surface thereof with a steric inducing compound selected from compounds which are readily soluble in organic components of an ink composition and which are reactive with the acid halide groups to provide a surface modified carbon black.
Claim 2
Independent Claim
85 words
A method for producing surface modified carbon black comprising the steps of: reacting the carbon black containing surface carboxyl groups with thionyl halide under conditions sufficient to produce acid halide groups on the surface of the carbon black; and reacting carbon black containing acid halide groups on the surface thereof with a steric inducing compound selected from compounds which are readily soluble in organic components of an ink composition and which are reactive with the acid halide groups to provide a surface modified carbon black.
Claim 3
Dependent Claim
37 words
The method for producing surface modified carbon black according to claim 1 , wherein the carbon black reacted with the thionyl halide has an acid number of about 0.5 to about 1.5 milliequivalents COOH/gram of carbon black.
Claim 4
Dependent Claim
20 words
The method for producing surface modified carbon black according to claim 1 , wherein the thionyl halide comprises thionyl chloride.
Claim 5
Dependent Claim
28 words
The method for producing surface modified carbon black according to claim 1 , wherein the carbon black is reacted with thionyl halide in the presence of a solvent.
Claim 6
Dependent Claim
19 words
The method for producing surface modified carbon black according to claim 4 , wherein the solvent comprises methylene chloride.
Claim 7
Dependent Claim
18 words
The method for producing surface modified carbon black according to claim 4 , wherein the solvent comprises toluene.
Claim 8
Dependent Claim
24 words
The method for producing surface modified carbon black according to claim 1 , wherein the steric inducing compound is a monoalkoxy-terminated polyalkylene glycol compound.
Claim 9
Dependent Claim
40 words
The method for producing surface modified carbon black according to claim 7 , wherein the steric inducing compound comprises an alkylene group containing from 2 to 6 carbon atoms and an alkoxy group containing from 1 to 6 carbon atoms.
Claim 10
Dependent Claim
35 words
The method for producing surface modified carbon black according to claim 7 , wherein the steric inducing compound comprises a glycol compound with a weight average molecular weight ranging from about 100 to about 1000.
Claim 11
Dependent Claim
35 words
The method for producing surface modified carbon black according to claim 7 , wherein the steric inducing compound comprises a glycol compound selected from the group consisting of methoxypolyethylene glycol and poly(ethylene glycol) tetrahydrofurfuryl ether.
Claim 12
Dependent Claim
23 words
The method for producing surface modified carbon black according to claim 1 , wherein the steric inducing compound is a mono-amine terminated compound.
Claim 13
Dependent Claim
22 words
The method for producing surface modified carbon black according to claim 11 , wherein the mono-amine terminated compound comprises a Jeffamine derivative.
Claim 14
Dependent Claim
33 words
The method for producing surface modified carbon black according to claim 1 , wherein the steric inducing compound comprises a mono-hydroxy containing compound selected from the group consisting of 2-hydroxyethylpyrrolidinone, 2-hydroethylmorpholine, and 2-hydroxyethyloxazolidone.
Claim 15
Dependent Claim
35 words
The method for producing surface modified carbon black according to claim 1 , wherein the surface modified carbon black has an acid number ranging from about 0.1 to about 0.7 milliequivalents COOH/gram of carbon black.
Claim 16
Dependent Claim
32 words
The method for producing surface modified carbon black according to claim 1 , wherein the surface modified carbon black has an average particle size ranging from about 80 to about 200 nanometers.
Claim 17
Dependent Claim
13 words
A surface modified carbon black made by the method of claim 1 .
Claim 18
Dependent Claim
43 words
A surface modified carbon black for use in ink jet printer ink formulations, the carbon black having a surface containing a steric inducing group attached thereto and having an acid number ranging from about 0.1 to about 0.7 milliequivalents COOH/gram of carbon black.
Claim 19
Dependent Claim
43 words
A surface modified carbon black for use in ink jet printer ink formulations, the carbon black having a surface containing a steric inducing group attached thereto and having an acid number ranging from about 0.1 to about 0.7 milliequivalents COOH/gram of carbon black.
Claim 20
Dependent Claim
23 words
The surface modified carbon black according to claim 17 , wherein the average particle size ranges from about 80 to about 200 nanometers.
Claim 21
Dependent Claim
42 words
The surface modified carbon black according to claim 17 , wherein the steric inducing group is derived from a steric inducing compound selected from the group consisting of a monoalkoxy-terminated polyalkylene glycol, a mono-amine terminated polyalkylene glycol compound, 2-hydroxyethylpyrrolidinone, 2-hydroethylmorpholine, and 2-hydroxyethyloxazolidone.
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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) | 2005-06-10 | 2005-12-10 | 2006-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-06-10 | 2009-12-10 | 2010-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-06-10 | 2013-12-10 | 2014-06-11 | $7700.00 | Window Closed / Lapsed |