US3941608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow agent for ink systems
Assignee: Frye Copysystems Inc
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Filing: 1973-05-23
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Granted: 1976-03-02
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Expires: 1993-05-23
Abstract
Abstract An improved dispersant and flow agent for ink systems formed from a selectively oxidized linear unsaturated hydrocarbon having a carbon to carbon terminal double bond and a process for forming the same.
Inventors
- 👤 Gerry H. Ehrhardt
- 👤 Ronald L. Reeves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:02
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/102; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3819; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
166 words
A method forming an improved dispersant/flow agent for mixtures of finely divided solid materials in liquifiable vehicles comprising the steps of oxidizing a linear unsaturated alpha olefinic hydrocarbon having at least 20 carbon atoms in the linear chain thereof, a melting point of about 70°F. to 200°F. and a terminal carbon to carbon double bond at a temperature of at least 300°F. to an acid number of no greater than about 8 and a saponification number of no greater than about 25, reacting said oxidized hydrocarbon with an amine selected from the group consisting of ammonia, monoethanolamine and mono substituted amine homologs thereof at a temperature less than about 270°F. to produce a modified oxidized hydrocarbon containing less than 0.19% nitrogen by weight thereof, and reacting said modified oxidized hydrocarbon with about 3 to about 9% of an organic isocyanate selected from the group consisting of 2,4 tolylene diisocyanate, 2,6 tolylene diisocyanate, polymethylene polyphenyl isocyanate and pp' diphenyl methane diisocyanate at a temperature below about 220°F.
Claim 2
Independent Claim
166 words
A method forming an improved dispersant/flow agent for mixtures of finely divided solid materials in liquifiable vehicles comprising the steps of oxidizing a linear unsaturated alpha olefinic hydrocarbon having at least 20 carbon atoms in the linear chain thereof, a melting point of about 70°F. to 200°F. and a terminal carbon to carbon double bond at a temperature of at least 300°F. to an acid number of no greater than about 8 and a saponification number of no greater than about 25, reacting said oxidized hydrocarbon with an amine selected from the group consisting of ammonia, monoethanolamine and mono substituted amine homologs thereof at a temperature less than about 270°F. to produce a modified oxidized hydrocarbon containing less than 0.19% nitrogen by weight thereof, and reacting said modified oxidized hydrocarbon with about 3 to about 9% of an organic isocyanate selected from the group consisting of 2,4 tolylene diisocyanate, 2,6 tolylene diisocyanate, polymethylene polyphenyl isocyanate and pp' diphenyl methane diisocyanate at a temperature below about 220°F.
Claim 3
Dependent Claim
8 words
The product of the process of claim 1.
Claim 4
Dependent Claim
18 words
The method as set forth in claim 1 wherein said alpha olefinic hydrocarbon is at least 98.5% mono-olefinic.
Claim 5
Dependent Claim
24 words
The method as set forth in claim 1 wherein said alpha olefinic hydrocarbon has 24 or more carbon atoms in the linear chain thereof.
Claim 6
Dependent Claim
8 words
The product of the process of claim 3.
Claim 7
Dependent Claim
8 words
The product of the process of claim 4.
References Cited (Backward Citations)
US3163548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-02 | 1979-09-01 | 1980-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-02 | 1983-09-01 | 1984-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-02 | 1987-09-01 | 1988-03-02 | $7700.00 | Window Closed / Lapsed |