US4929279A
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Process for dispersing organic pigments with ultrasonic radiation
Assignee: Flint Ink Corp
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Filing: 1989-02-21
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Granted: 1990-05-29
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Expires: 2009-02-21
Abstract
Abstract Dispersions of organic pigments are produced by adding a surfactant to an aqueous slurry of an organic pigment followed by subjecting the slurry to ultrasonic radiation. The surfactant utilized is one or more of the surfactants selected from the group consisting of: 1. the acidic salt of N-alkyl-N,N',N'-trimethyl-1,3-propanediamine, 2. the acidic salt of N-alkyl-N,N',N'-tris(2-hydroxypropyl)-1,3-propanediamine, 3. N-alkyl-N,N,N',N',N'-pentamethyl-1,3-propanediamine dichloride, 4. the acidic salt of N-(N-alkyl-3-aminopropane)-N'-(3-aminopropane)-1,3-propanediamine wherein the alkyl group contains from about 12 to about 22 carbon atoms, and 5. a poly(ethyleneoxide) ether of an 18 carbon alcohol having 9 units of ethylene oxide thereon.
Inventors
- 👤 Byron G. Hays
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:04
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0084; C09B67/0091
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
97 words
A method of dispersing an organic pigment, the method comprising the steps of: (A) adding a surfactant to an aqueous slurry of an organic pigment, the surfactant being selected from the group consisting of 1. the acidic salt of N-alkyl-N,N',N'trimethyl-1,3-propanediamine, 2. the acidic salt of N-alkyl-N,N',N'tris(2-hydroxypropyl)-1,3-propanediamine, 3. N-alkyl-N,N,N',N',N'-pentamethyl-1,3,-propanediamine dichloride, 4. the acidic salt of N-(N-alkyl-3-aminopropane)-N'(3 aminopropane)-1,3propanediamine, wherein the alkyl group contains from about 12 to about 22 carbon atoms, and 5. a poly(ethyleneoxide) ether of an 18 carbon alcohol having 9 units of ethylene oxide thereon; (B) dispersing the pigment by subjecting the slurry to ultrasonic radiation.
Claim 2
Independent Claim
97 words
A method of dispersing an organic pigment, the method comprising the steps of: (A) adding a surfactant to an aqueous slurry of an organic pigment, the surfactant being selected from the group consisting of 1. the acidic salt of N-alkyl-N,N',N'trimethyl-1,3-propanediamine, 2. the acidic salt of N-alkyl-N,N',N'tris(2-hydroxypropyl)-1,3-propanediamine, 3. N-alkyl-N,N,N',N',N'-pentamethyl-1,3,-propanediamine dichloride, 4. the acidic salt of N-(N-alkyl-3-aminopropane)-N'(3 aminopropane)-1,3propanediamine, wherein the alkyl group contains from about 12 to about 22 carbon atoms, and 5. a poly(ethyleneoxide) ether of an 18 carbon alcohol having 9 units of ethylene oxide thereon; (B) dispersing the pigment by subjecting the slurry to ultrasonic radiation.
Claim 3
Dependent Claim
51 words
The method as described in claim 1, wherein the surfactant is selected from the group consisting of: 1. the acidic salt of N-alkyl-N,N',N'-trimethyl-1,3-propanediamine, 2. the acidic salt of N-alkyl-N,N',N'-tris(2-hydroxypropyl)-1,3-propanediamine, 3. N-alkyl-N,N,N',N',N'-pentamethyl-1,3-propanediamine dichloride, 4. the acidic salt of N-(N-alkyl-3-aminopropane)-N'-(3-aminopropane)-1,3-ropanediamine, wherein the alkyl group contains from about 12 to about 22 carbon atoms.
Claim 4
Dependent Claim
31 words
The method as described in claim 1 wherein the dispersion of the pigment particles is carried out at a temperature between 15° C. and the boiling point of the pigment slurry.
Claim 5
Dependent Claim
21 words
The method as described in claim 1 wherein the dispersing step is carried out for a period less than 5 hours.
Claim 6
Dependent Claim
23 words
The method as described in claim 1 wherein the dispersing step is carried out for a period between 30 minutes and 5 hours.
Claim 7
Dependent Claim
33 words
The method as described in claim 1 wherein the surfactant is added to the pigment slurry in an amount between 2 percent, on weight of pigment, and 100 percent, on weight of pigment.
Claim 8
Dependent Claim
33 words
The method as described in claim 1 wherein the surfactant is added to the pigment slurry in an amount between 5 percent, on weight of pigment and 85 percent on weight of pigment.
Claim 9
Dependent Claim
33 words
The method as described in claim 1 wherein the surfactant is added to the pigment slurry in an amount between 10 percent, on weight of pigment, and 30 percent, on weight of pigment.
Claim 10
Dependent Claim
37 words
The method as described in claim 1 wherein the pigment is a substantially transparent pigment and the surfactant is added in an amount between 10 percent, on weight of pigment, and 30 percent, on weight of pigment.
Claim 11
Dependent Claim
37 words
The method as described in claim 1 wherein the pigment is a substantially opaque pigment and the surfactant is added in an amount between 5 percent, on weight of pigment, and 10 percent, on weight of pigment.
Claim 12
Dependent Claim
42 words
The method as described in claim 1 wherein the surfactant is present in an amount between 50 percent, on weight of pigment, and 90 percent, on weight of pigment, and the dispersing process is carried out during the striking of the pigment.
Claim 13
Dependent Claim
70 words
The method as described in claim 1 wherein the pigment is one or more members selected from the group consisting of nitroso pigments, disazo pigments, disazo condensation pigments, basic dye pigments, alkali blue pigments, Peacock blue lake pigments, phloxine pigments, quinacridone pigments, lake pigments of Acid Yellow 1 and 3, carbazole dioxazine violet pigments, alizarine lake pigments, vat pigments, phthalocyanine pigments, carmine lake pigments, tetrachloroisoindolinone pigments, and carbon black pigments.
Claim 14
Dependent Claim
28 words
The method as described in claim 1 wherein the pigment is one or more members selected from the group consisting of monoazo, disazo, phthalocyanine, and carbon black pigments.
Claim 15
Dependent Claim
31 words
The method as described in claim 1 wherein the organic pigment is selected from the group consisting of Pigment Yellow 12, Pigment Blue 15, Pigment Black 7, and Pigment Red 49.
Claim 16
Dependent Claim
31 words
The method as described in claim 2 wherein the dispersion of the pigment particles is carried out at a temperature between 15° C. and the boiling point of the pigment slurry.
Claim 17
Dependent Claim
21 words
The method as described in claim 2 wherein the dispersing step is carried out for a period less than 5 hours.
Claim 18
Dependent Claim
23 words
The method as described in claim 2 wherein the dispersing step is carried out for a period between 30 minutes and 5 hours.
Claim 19
Dependent Claim
33 words
The method as described in claim 2 wherein the surfactant is added to the pigment slurry in an amount between 2 percent, on weight of pigment, and 100 percent, on weight of pigment.
Claim 20
Dependent Claim
33 words
The method as described in claim 2 wherein the surfactant is added to the pigment slurry in an amount between 5 percent, on weight of pigment and 85 percent on weight of pigment.
Claim 21
Dependent Claim
33 words
The method as described in claim 2 wherein the surfactant is added to the pigment slurry in an amount between 10 percent, on weight of pigment, and 30 percent, on weight of pigment.
Claim 22
Dependent Claim
70 words
The method as described in claim 2 wherein the pigment is one or more members selected from the group consisting of nitroso pigments, disazo pigments, disazo condensation pigments, basic dye pigments, alkali blue pigments, Peacock blue lake pigments, phloxine pigments, quinacridone pigments, lake pigments of Acid Yellow 1 and 3, carbazole dioxazine violet pigments, alizarine lake pigments, vat pigments, phthalocyanine pigments, carmine lake pigments, tetrachloroisoindolinone pigments, and carbon black pigments.
Claim 23
Dependent Claim
26 words
The method of claim 2 wherein the pigment is one or more members selected from the group consisting of monoazo, disazo, phthalocyanine, and carbon black pigments.
Claim 24
Dependent Claim
29 words
The method of claim 2 wherein the organic pigment is selected from the group consisting of Pigment Yellow 12, Pigment Blue 15, Pigment Black 7, and Pigment Red 49.
Claim 25
Dependent Claim
37 words
The method as described in claim 2 wherein the pigment is a substantially transparent pigment and the surfactant is added in an amount between 10 percent, on weight of pigment, and 30 percent, on weight of pigment.
Claim 26
Dependent Claim
37 words
The method as described in claim 2 wherein the pigment is a substantially opaque pigment and the surfactant is added in an amount between 5 percent, on weight of pigment, and 10 percent, on weight of pigment.
Claim 27
Dependent Claim
42 words
The method as described in claim 2 wherein the surfactant is present in an amount between 50 percent, on weight of pigment, and 90 percent, on weight of pigment, and the dispersing process is carried out during the striking of the pigment.
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) | 1993-05-28 | 1993-11-27 | 1994-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-28 | 1997-11-27 | 1998-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-28 | 2001-11-27 | 2002-05-29 | $7700.00 | Window Closed / Lapsed |