US5296284A
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US
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Dyed hectorite pigments and applications
Assignee: JM Huber Corp
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Filing: 1992-09-29
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Granted: 1994-03-22
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Expires: 2012-09-29
Abstract
Abstract A coloring pigment useful for coloring or tinting inks, paints, plastics and rubber comprises the reaction product of a cationic organic dye and a hectorite mineral, the hectorite mineral having a small average particle size and a high cation exchange capacity. The pigment has excellent color strength and does not bleed in water or oil and is easily dispersable in aqueous and organic media.
Inventors
- 👤 David H. Durham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:24
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/03; C09D11/037; C08; C08K; C08K5/00; C08K5/0008; C08K5/0041; C09B; C09B63/00; C09B69/00; C09B69/02; C09C; C09C1/00; C09C1/40; C09C1/405; C09C1/42; C09C3/00; C09C3/08; C09D7/00; C09D7/40; C09D7/60; C09D7/61; C09D7/62; C09D7/66; C09D7/68; D; D21; D21H; D21H21/00; D21H21/14; D21H21/28; C01; C01P; C01P2004/00; C01P2004/01; C01P2004/20; C01P2004/60; C01P2004/62; C01P2006/00; C01P2006/10; C01P2006/60; C01P2006/90; C08K3/00; C08K3/34; C08K3/346; C08K9/00; C08K9/04; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24901; Y10T428/24934
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
85 words
A paint containing as a coloring agent a coloring pigment which comprises the reaction product of a cationic organic dye and a sheared, sodium exchanged McDermitt, Nevada calcium magnesium hectorite, said hectorite mineral having an average particle size of 0.1 to 0.6 microns, a generally square or plate-like morphology and high cation exchange capacity in the range of 110 to 150 milliequivalents per 100 grams of dry hectorite, and a charge density yielding a greater than 28.5 angstroms D(001) spacing as measured by x-ray diffraction.
Claim 2
Dependent Claim
85 words
A paint containing as a coloring agent a coloring pigment which comprises the reaction product of a cationic organic dye and a sheared, sodium exchanged McDermitt, Nevada calcium magnesium hectorite, said hectorite mineral having an average particle size of 0.1 to 0.6 microns, a generally square or plate-like morphology and high cation exchange capacity in the range of 110 to 150 milliequivalents per 100 grams of dry hectorite, and a charge density yielding a greater than 28.5 angstroms D(001) spacing as measured by x-ray diffraction.
Claim 3
Dependent Claim
39 words
A paint according to claim 1, wherein the hectorite which is reacted with the organic cationic dye is a calcium-magnesium hectorite which has been converted to the sodium form by reaction with sodium carbonate or a sodium exchange resin.
Claim 4
Dependent Claim
29 words
A paint according to claim 1, wherein the organic cationic dye is selected from the group consisting of Victoria blue, Methylene blue, Methyl violet, Rhodamine red and Auramine yellow.
Claim 5
Dependent Claim
18 words
A paint according to claim 1, wherein the pigment has been milled prior to incorporation into the paint.
Claim 6
Dependent Claim
86 words
A printing ink which contains as a coloring agent a coloring pigment which comprises the reaction product of a cationic organic dye and a sheared, sodium exchanged McDermitt, Nevada calcium magnesium hectorite, said hectorite mineral having an average particle size of 0.1 to 0.6 microns generally square or plate-like morphology, a high cation exchange capacity in the range of 100 to 150 milliequivalents per 100 grams of dry hectorite and a charge density yielding a greater than 28.5 angstroms D(001) spacing as measured by x-ray diffraction.
Claim 7
Dependent Claim
86 words
A printing ink which contains as a coloring agent a coloring pigment which comprises the reaction product of a cationic organic dye and a sheared, sodium exchanged McDermitt, Nevada calcium magnesium hectorite, said hectorite mineral having an average particle size of 0.1 to 0.6 microns generally square or plate-like morphology, a high cation exchange capacity in the range of 100 to 150 milliequivalents per 100 grams of dry hectorite and a charge density yielding a greater than 28.5 angstroms D(001) spacing as measured by x-ray diffraction.
Claim 8
Dependent Claim
40 words
A printing ink according to claim 5, wherein the hectorite which is reacted with the organic cationic dye is a calcium-magnesium hectorite which has been converted to the sodium form by reaction with sodium carbonate or a sodium exchange resin.
Claim 9
Dependent Claim
30 words
A printing ink according to claim 5, wherein the organic cationic dye is selected from the group consisting of Victoria blue, Methylene blue, Methyl violet, Rhodamine red and Auramine yellow.
Claim 10
Dependent Claim
19 words
A printing ink according to claim 5, wherein the pigment has been milled prior to incorporation into the ink.
Claim 11
Dependent Claim
91 words
A paper or paperboard which has been printed with a printing ink which contains a coloring pigment which comprises the reaction product of a cationic organic dye and a sheared, sodium-exchanged McDermitt, Nevada calcium magnesium hectorite, said hectorite mineral having an average particle size of 0.1 to 0.6 microns, a generally square or plate-like morphology, a high cation exchange capacity in the range of 100 to 150 milliequivalents per 100 grams of dry hectorite and a charge density yielding a greater than 28.5 angstroms D(001) spacing as measured by x-ray diffraction.
Claim 12
Dependent Claim
91 words
A paper or paperboard which has been printed with a printing ink which contains a coloring pigment which comprises the reaction product of a cationic organic dye and a sheared, sodium-exchanged McDermitt, Nevada calcium magnesium hectorite, said hectorite mineral having an average particle size of 0.1 to 0.6 microns, a generally square or plate-like morphology, a high cation exchange capacity in the range of 100 to 150 milliequivalents per 100 grams of dry hectorite and a charge density yielding a greater than 28.5 angstroms D(001) spacing as measured by x-ray diffraction.
Claim 13
Dependent Claim
39 words
A paper according to claim 9, wherein the hectorite which is reacted with the organic cationic dye is a calcium-magnesium hectorite which has been converted to the sodium form by reaction with sodium carbonate and/or a sodium exchange resin.
Claim 14
Dependent Claim
29 words
A paper according to claim 9, wherein the organic cationic dye is selected from the group consisting of Victoria blue, Methylene blue, Methyl violet, Rhodamine red and Auramine yellow.
Claim 15
Dependent Claim
19 words
A paper according to claim 9, wherein the pigment has been jet milled prior to incorporation into the ink.
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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) | 1997-03-21 | 1997-09-20 | 1998-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-21 | 2001-09-20 | 2002-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-21 | 2005-09-20 | 2006-03-22 | $7700.00 | Window Closed / Lapsed |