US5024700A
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US
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Thixotropic printing ink compositions and methods of preparing same
Assignee: Ink Co
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Filing: 1989-09-05
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Granted: 1991-06-18
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Expires: 2009-09-05
Abstract
Abstract A method of imparting thixotropic properties to printing ink compositions comprising blending at least one ethanolamine compound into a printing ink composition at sufficient concentration to obtain a final printing ink material exhibiting desired thixotropic properties. The ethanolamine compounds usable in connection with the present invention include monoethanolamine, diethanolamine and triethanolamine. In at least one naphthenic ink oil based printing ink composition, desirable thixotropic properties are exhibited when TEA is added at levels varying between 0.5 and 2.0 percent by weight. The optimal amount of TEA in such naphthenic oil based ink composition is approximately 0.7 percent by weight. Ink formulations in accordance with the present invention may be based on organic ink vehicles including naphthenic ink oils and/or hydrocarbon resins. In at least some of the ink compositions of the present invention, the presence of the ethanolamine thixotropic agent also improves the rub resistance of the final ink.
Inventors
- 👤 William E. Britton, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:02
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/106; C09D11/108; C09D11/03
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
66 words
An ink composition comprising: (a) approx. 33.7% by weight of solvent petroleum-based ink solvent (b) approx. 24.5% by weight of naphthenic ink oil (c) approx. 19.0% by weight of hydrocarbon resin(s) (d) approx. 4.5% by weight of petroleum-process oil (e) approx. 17.5% by weight of oil-based carbon black (f) less than 1% by weight of aluminum gellant (g) approximately 0.07% to 1.5% by weight of triethanolamine.
Claim 2
Dependent Claim
66 words
An ink composition comprising: (a) approx. 33.7% by weight of solvent petroleum-based ink solvent (b) approx. 24.5% by weight of naphthenic ink oil (c) approx. 19.0% by weight of hydrocarbon resin(s) (d) approx. 4.5% by weight of petroleum-process oil (e) approx. 17.5% by weight of oil-based carbon black (f) less than 1% by weight of aluminum gellant (g) approximately 0.07% to 1.5% by weight of triethanolamine.
Claim 3
Dependent Claim
48 words
The ink composition of claim 1 wherein said hydrocarbon resin(s) comprises a combination of at least two hydrocarbon resins, the relative amounts of said at least two hydrocarbon resins being such that the final ink composition will exhibit hydroscopicity in the range of 40% to 60% by weight.
Claim 4
Dependent Claim
92 words
An ink composition comprising: (a) approx. 33.70% by weight of petroleum-based ink solvent (b) approx. 24.55% by weight of naphthenic ink oil (c) approx. 10.50% by weight of a first hydrocarbon resin having an average molecular weight of approximately 950 gm/mol (d) approx. 8.50% by weight of a second hydrocarbon resin having an average molecular weight of approximately 20,000-35,000 gm/mol (e) approx. 4.50% by weight of petroleum-process oil (f) approx. 17.55% by weight of oil-based carbon black (g) approx. 0.63% by weight of aluminum gellant (h) approx. 0.07% by weight of triethanolamine.
Claim 5
Dependent Claim
92 words
An ink composition comprising: (a) approx. 33.70% by weight of petroleum-based ink solvent (b) approx. 24.55% by weight of naphthenic ink oil (c) approx. 10.50% by weight of a first hydrocarbon resin having an average molecular weight of approximately 950 gm/mol (d) approx. 8.50% by weight of a second hydrocarbon resin having an average molecular weight of approximately 20,000-35,000 gm/mol (e) approx. 4.50% by weight of petroleum-process oil (f) approx. 17.55% by weight of oil-based carbon black (g) approx. 0.63% by weight of aluminum gellant (h) approx. 0.07% by weight of triethanolamine.
Claim 6
Dependent Claim
55 words
The ink composition of claim 3 wherein said naphthenic ink oil is characterized in that approximately -2% of the carbon atoms of said naphthenic ink oil are aromatic, approximately 40% of the carbon atoms of said naphthenic ink oil are naphthenic, and approximately 48% of the carbon atoms of said naphthenic ink oil are paraffinic.
Claim 7
Dependent Claim
20 words
The ink composition of claim 4 wherein said naphthenic ink oil has an average molecular weight of approximately 442 gm/mol.
Claim 8
Dependent Claim
65 words
An ink composition comprising: (a) approx. 35% by weight of heat set varnish (b) approx. 32% by weight of naphthenic ink oil (c) approx. 20% by weight of Rubine ink base (d) approx. 5% by weight of gelled ink oil (e) approx. 4% by weight of petroleum hydrocarbon oil (f) approx. 2% by weight of red pigment composition (g) approx. 2% by weight of triethanolamine.
Claim 9
Dependent Claim
65 words
An ink composition comprising: (a) approx. 35% by weight of heat set varnish (b) approx. 32% by weight of naphthenic ink oil (c) approx. 20% by weight of Rubine ink base (d) approx. 5% by weight of gelled ink oil (e) approx. 4% by weight of petroleum hydrocarbon oil (f) approx. 2% by weight of red pigment composition (g) approx. 2% by weight of triethanolamine.
Claim 10
Dependent Claim
55 words
The ink composition of claim 6 wherein said naphthenic ink oil is characterized in that approximately 12% of the carbon atoms of said naphthenic ink oil are aromatic, approximately 40% of the carbon atoms of said naphthenic ink oil are naphthenic, and approximately 48% of the carbon atoms of said naphthenic ink oil are paraffinic.
Claim 11
Dependent Claim
20 words
The ink composition of claim 6 wherein said naphthenic ink oil has an average molecular weight of approximately 442 gm/mol.
Claim 12
Dependent Claim
38 words
An ink composition comprising: (a) approx. 73% by weight of naphthenic ink oil (b) approx. 20.21% by weight of oil-based carbon black (c) approx. 6.1% by weight of petroleum process oil (d) approx. 0.55% by weight of triethanolamine.
Claim 13
Dependent Claim
38 words
An ink composition comprising: (a) approx. 73% by weight of naphthenic ink oil (b) approx. 20.21% by weight of oil-based carbon black (c) approx. 6.1% by weight of petroleum process oil (d) approx. 0.55% by weight of triethanolamine.
Claim 14
Dependent Claim
20 words
The ink composition of claim 9 wherein said naphthenic ink oil has an average molecular weight of approximately 442 gm/mol.
Claim 15
Dependent Claim
47 words
The ink composition of claim 9 wherein approximately 12% of the carbon atoms of said naphthenic ink oil are aromatic, approximately 40% of the carbon atoms of said naphthenic ink oil are naphthenic, and approximately 48% of the carbon atoms of said naphthenic ink oil are paraffinic.
Claim 16
Dependent Claim
57 words
An ink composition comprising: (a) approx. 35.5% by weight of heat set varnish (b) approx. 39% by weight of Rubine ink base (c) approx. 7% by weight of printing ink wax compound (d) approx. 15% by weight of petroleum-based ink solvent (e) approx. 2% by weight of triethanolamine (f) approx. 0.5% by weight of polymerized castor oil.
Claim 17
Dependent Claim
57 words
An ink composition comprising: (a) approx. 35.5% by weight of heat set varnish (b) approx. 39% by weight of Rubine ink base (c) approx. 7% by weight of printing ink wax compound (d) approx. 15% by weight of petroleum-based ink solvent (e) approx. 2% by weight of triethanolamine (f) approx. 0.5% by weight of polymerized castor oil.
Claim 18
Independent Claim
43 words
A method of imparting thixotropic properties to printing ink compositions containing at least one organic ink vehicle, said method comprising the step of blending at least one ethanolamine compound into said printing ink to obtain a final printing ink material exhibiting thixotropic properties.
Claim 19
Independent Claim
43 words
A method of imparting thixotropic properties to printing ink compositions containing at least one organic ink vehicle, said method comprising the step of blending at least one ethanolamine compound into said printing ink to obtain a final printing ink material exhibiting thixotropic properties.
Claim 20
Dependent Claim
45 words
The method of claim 13 wherein the step of "blending a sufficient amount of at least one ethanolamine compound" comprises blending a sufficient amount of at least one compound selected from the group consisting of: (a) monoethanolamine; (b) diethanolamine; (c) triethanolamine; and (d) combinations thereof.
Claim 21
Dependent Claim
30 words
The method of claim 13 wherein the step of "blending at least one ethanolamine compound" comprises blending approximately 0.5 to 2.0 percent by weight triethanolamine into the printing ink composition.
Claim 22
Dependent Claim
28 words
The method of claim 13 wherein the step of "blending at least one ethanolamine compound" comprises blending approximately 0.7 percent by weight triethanolamine into the printing ink composition.
Claim 23
Independent Claim
32 words
A method of improving the rub resistance of an applied printing ink, said method comprising the step of adding at least one ethanolamine compound to said printing ink prior to application thereof.
Claim 24
Independent Claim
32 words
A method of improving the rub resistance of an applied printing ink, said method comprising the step of adding at least one ethanolamine compound to said printing ink prior to application thereof.
Claim 25
Dependent Claim
42 words
The method of claim 17 wherein the step of adding at least one ethanolamine compound to the printing ink comprises adding at least one ethanolamine compound selected from the group consisting of: (a) monoethanolamine; (b) diethanolamine; (c) triethanolamine; and (d) combinations thereof.
References Cited (Backward Citations)
US2996396A
Cited
US3096193A
Cited
US3249448A
Cited
US3468829A
Cited
US3330673A
Cited
US3391081A
Cited
US3847623A
Cited
US3723148A
Cited
US4101480A
Cited
US4101329A
Cited
US4357164A
Cited
US4410364A
Cited
US4475950A
Cited
US4391637A
Cited
US4666519A
Cited
US4654081A
Cited
US4738721A
Cited
US4683002A
Cited
US4726844A
Cited
US4704163A
Cited
US4797157A
Cited
US4786327A
Cited
US4752381A
Cited
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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) | 1994-06-17 | 1994-12-17 | 1995-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-17 | 1998-12-17 | 1999-06-18 | $3760.00 | Window Closed / Lapsed |
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