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US6699319B2
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Process for preparing modified pigments
Assignee: Cabot Corp
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Filing: 2002-05-06
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Granted: 2004-03-02
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Expires: 2022-05-06
Abstract
Abstract The present invention relates to a process for preparing a polymer-modified pigment comprising the step of: combining, in any order, at least one pigment having attached at least one nucleophilic group, at least one polymer comprising at least one carboxylic acid group or salt thereof, and at least one coupling agent. At least one mediator compound may also be used. The modified pigments can be used in applications such as inkjet ink applications.
Inventors
- 👤 Curtis E. Adams
- 👤 Ronald J. Gambale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:07
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/62
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
46 words
A process for preparing a polymer-modified pigment comprising the step of: combining, in any order, at least one pigment having attached at least one nucleophilic group, at least one polymer comprising at least one carboxylic acid group or salt thereof, and at least one coupling agent.
Claim 2
Dependent Claim
46 words
A process for preparing a polymer-modified pigment comprising the step of: combining, in any order, at least one pigment having attached at least one nucleophilic group, at least one polymer comprising at least one carboxylic acid group or salt thereof, and at least one coupling agent.
Claim 3
Dependent Claim
13 words
The process of claim 1 , wherein the process is an aqueous process.
Claim 4
Dependent Claim
35 words
The process of claim 1 , wherein the pigment having attached at least one nucleophilic group comprises the reaction product of a pigment with a diazonium salt comprising the nucleophilic group or a derivative thereof.
Claim 5
Dependent Claim
46 words
The process of claim 3 , wherein the pigment comprises a blue pigment, a black pigment, a brown pigment, a cyan pigment, a green pigment, a white pigment, a violet pigment, a magenta pigment, a red pigment, an orange pigment, a yellow pigment, or mixtures thereof.
Claim 6
Dependent Claim
12 words
The process of claim 4 , wherein the pigment is carbon black.
Claim 7
Dependent Claim
19 words
The process of claim 1 , wherein the nucleophilic group comprises at least one amine group or salt thereof.
Claim 8
Dependent Claim
32 words
The process of claim 6 , wherein the amine group is a —C 6 H 4 —ALK—NH 2 group, wherein ALK is a bond or a linear or branched C1-C8 alkyl group.
Claim 9
Dependent Claim
47 words
The process of claim 6 , wherein the amine group comprises an —SO 2 —ALK1-NH—ALK2—NH 2 group or an —SO 2 —ALK2—NH 2 , wherein ALK1 is a bond or a linear or branched C1-C8 alkylene group and ALK2 is a linear or branched C1-C8 alkylene group.
Claim 10
Dependent Claim
19 words
The process of claim 6 , wherein the nucleophilic group comprises at least one polyamine group or salt thereof.
Claim 11
Dependent Claim
35 words
The process of claim 9 , wherein the polyamine group is a linear or branched polyethyleneimine group, a polyallylamine group, a polyvinylamine group, a pentaethylenehexamine group, a polyamidoamine group, or a salt or derivative thereof.
Claim 12
Dependent Claim
52 words
The process of claim 1 , wherein the nucleophilic group comprises a group having the formula X-Sp-[PA], wherein X, which is directly attached to the pigment, represents an arylene, heteroarylene, or alkylene group, Sp represents a spacer group, and PA represents a polyamine group, a salt thereof, or an acyl derivative thereof.
Claim 13
Dependent Claim
25 words
The process of claim 11 , wherein PA represents a linear or branched polyethyleneimine group, a pentaethylenehexamine group, or a salt or acyl derivative thereof.
Claim 14
Dependent Claim
39 words
The process of claim 1 , wherein the polymer comprising at least one carboxylic acid group is a polyurethane, a polyester, a polyamide, or a homopolymer or copolymer of acrylic acid, methacrylic acid, maleic acid, or a salt thereof.
Claim 15
Dependent Claim
44 words
The process of claim 1 , wherein the polymer comprising at least one carboxylic acid group is polyacrylic acid, polymethacrylic acid, poly(styrene-acrylic acid), poly(styrene-methacrylic acid), poly(styrene-maleic acid), copolymers of acrylic acid or methacrylic acid and alkyl acrylates or methacrylates, poly(ethylene-acrylic acid), or salts thereof.
Claim 16
Dependent Claim
13 words
The process of claim 1 , wherein the coupling agent is water soluble.
Claim 17
Dependent Claim
37 words
The process of claim 1 , wherein the coupling agent is acetic anhydride, diphenylphosphorylazide, 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide, 1,3-dicyclohexylcarbodiimide, 1,3-diispropylcarbodiimide, N,N-carbonyldiimidazole, isobutyl chloroformate, 2-chloro-4,6-dimethoxy-1,3,5-triazine, 4,-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride, 2-(4-dimethylcarbamoyl-pyridino)-ethane-1-sulfonate, 2-(4-diethylcarbamoyl-pyridino)-ethane-1-sulfonate, O-(N-succinimidyl)-1,1,3,3-tetramethyluronium tetrafluoroborate, benzotriazol-1-yl-oxy-tris-(dimethylamino)-phosphonium hexafluorophosphate, pivaloyl choloride, 1-methyl-2-chloropyridinium iodide, or (4-dimethcarbamoyl-pyridyl)sulfonate inner salt.
Claim 18
Dependent Claim
47 words
The process of claim 1 , wherein the polymer comprising at least one carboxylic acid group or salt thereof is combined with the coupling agent to form a reactive polymer, and wherein the reactive polymer is combined with the pigment having attached at least one nucleophilic group.
Claim 19
Dependent Claim
38 words
The process of claim 17 , wherein the polymer comprising at least one carboxylic acid group is a polyurethane, a polyester, a polyamide, or a homopolymer or copolymer of acrylic acid, methacrylic acid, maleic acid, or salts thereof.
Claim 20
Dependent Claim
44 words
The process of claim 17 , wherein the polymer comprising at least one carboxylic acid group is polyacrylic acid, polymethacrylic acid, poly(styrene-acrylic acid), poly(styrene-methacrylic acid), poly(styrene-maleic acid), copolymers of acrylic acid or methacrylic acid and alkyl acrylates or methacrylates, poly(ethylene-acrylic acid), or salts thereof.
Claim 21
Dependent Claim
13 words
The process of claim 17 , wherein the coupling agent is water soluble.
Claim 22
Dependent Claim
38 words
The process of claim 17 , wherein the coupling agent is acetic anhydride, diphenylphosphorylazide, 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide, 1,3-dicyclohexylcarbodiimide, 1,3-diispropylcarbodiimide, N,N-carbonyldiimidazole, isobutyl chloroformate, 2-chloro-4,6-dimethoxy-1,3.5-triazine, 4,-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride, 2-(4-dimethylcarbamoyl-pyridino)-ethane-1-sulfonate, 2-(4-diethylcarbamoyl-pyridino)-ethane-1-sulfonate, O-(N-succinimidyl)-1,1,3,3-tetramethyl uronium tetrafluoroborate, benzotriazol-1-yl-oxy-tris-(dimethylamino)-phosphonium hexafluorophosphate, pivaloyl choloride, 1-methyl-2-chloropyridinium iodide, or (4-dimethcarbamoyl-pyridyl)sulfonate inner salt.
Claim 23
Dependent Claim
21 words
The process of claim 17 , further comprising the step of adding at least one mediator compound to the reactive polymer.
Claim 24
Dependent Claim
18 words
The process of claim 22 , wherein the mediator compound is 1-hydroxybenzotriazole, N-hydroxysuccinimide, sodium N-hydroxysulfosuccinimide, 6-phenyl-2-pyridone, or 2-mercaptopyridine.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2007-03-02 | 2007-09-01 | 2008-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-03-02 | 2011-09-01 | 2012-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-03-02 | 2015-09-01 | 2016-03-02 | $7700.00 | Window Closed / Lapsed |