US4194983A
Expired / Lapsed
US
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Perfluorinated polyalkylether based lubricant composition
Assignee: United States Department of the Air Force
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Filing: 1979-02-06
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Granted: 1980-03-25
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Expires: 1999-02-06
Abstract
Abstract A lubricant composition comprising a perfluorinated polyalkylether base fluid and a minor amount of a diphospha-s-triazine in which the two phosphorus atoms are substituted by aromatic groups and the carbon atom is substituted by a perfluoroalkyl or perfluoroalkylether moiety.
Inventors
- 👤 Kazimiera J. L. Paciorek
- 👤 Reinhold H. Kratzer
- 👤 Jacquelyn Kaufman
- 👤 Thomas I. Ito
- 👤 James H. Nakahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:33
CPC Classifications
C; C10; C10M; C10M137/00; C10M137/16; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6581; C07F9/6587; C10M107/00; C10M107/38; C10M169/00; C10M169/04; C10M2213/00; C10M2213/02; C10M2213/023; C10M2213/04; C10M2213/043; C10M2213/06; C10M2213/0606; C10M2213/062; C10M2213/0623; C10M2223/00; C10M2223/06; C10M2223/061; C10M2223/08; C10N; C10N2040/00; C10N2040/08; C10N2040/135; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
45 words
A lubricant composition comprising (1) a perfluorinated polyalkylether base fluid and (2) a corrosion inhibiting amount of a diphospha-s-triazine having the following formula: ##STR6## wherein R f ' is a perfluoroalkyl or perfluoroalkylether group and R' and R" are the same or different aryl groups.
Claim 2
Dependent Claim
45 words
A lubricant composition comprising (1) a perfluorinated polyalkylether base fluid and (2) a corrosion inhibiting amount of a diphospha-s-triazine having the following formula: ##STR6## wherein R f ' is a perfluoroalkyl or perfluoroalkylether group and R' and R" are the same or different aryl groups.
Claim 3
Dependent Claim
29 words
The lubricant composition of claim 1 in which the amount of the diphospha-s-triazine ranges from about 0.05 to 5 weight percent, based upon the weight of the base fluid.
Claim 4
Dependent Claim
29 words
The lubricant composition of claim 1 in which the amount of the diphospha-s-triazine ranges from about 0.5 to 2 weight percent, based upon the weight of the base fluid.
Claim 5
Dependent Claim
45 words
The lubricant composition of claim 1 in which the perfluorinated polyalkylether base fluid is a compound having the following formula: ##STR7## where R f is a perfluoroalkyl group containing 2 or 3 carbon atoms and a is an integer ranging from 5 to 50, inclusive.
Claim 6
Dependent Claim
141 words
The lubricant composition of claim 1 in which the R f ' group of the diphospha-s-triazine is a group hvaing the formula C n F 2n+1 , where n is an integer from 1 to 10, inclusive, CF 3 (OCF 2 --CF 2 ) x OCF 2 , C 2 F 5 (OCF 2 CF 2 ) x OCF 2 , or C 3 F 7 [OCF(CF 3 )CF 2 ] x OCF(CF 3 ), where x is zero or an integer from 1 to 20, inclusive, and R' and R" are individually selected from the group consisting of C 6 H 5 , R--C 6 H 4 , where R is an aromatic, alkyl, perfluoroalkyl or perfluoroalkylether moiety, C 6 F 5 , and R f --C 6 H 4 , where R f is a perfluoroalkyl or perfluoroalkylether group.
Claim 7
Dependent Claim
15 words
The lubricant composition of claim 5 in which the diphospha-s-triazine has the following formula: ##STR8##
Claim 8
Dependent Claim
15 words
The lubricant composition of claim 5 in which the diphospha-s-triazine has the following formula: ##STR9##
Claim 9
Dependent Claim
15 words
The lubricant composition of claim 5 in which the diphospha-s-triazine has the following formula: ##STR10##
Claim 10
Dependent Claim
15 words
The lubricant composition of claim 5 in which the diphospha-s-triazine has the following formula: ##STR11##
Claim 11
Dependent Claim
15 words
The lubricant composition of claim 5 in which the diphospha-s-triazine has the following formula: ##STR12##
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-25 | 1983-09-24 | 1984-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-25 | 1987-09-24 | 1988-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-25 | 1991-09-24 | 1992-03-25 | $7700.00 | Window Closed / Lapsed |