Patent US4968317A successfully refreshed from Google Patents.
Patent US3981810A successfully refreshed from Google Patents.
US3981810A
Expired / Lapsed
US
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Grease composition
Assignee: United States Department of the Navy
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Filing: 1975-11-11
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Granted: 1976-09-21
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Expires: 1995-11-11
Abstract
Abstract Grease compositions suitable for a salt water, high pressure and high shear environment over a wide temperature range which comprises from 82 to 89 weight percent of an ester-silicone oil base selected from the group consisting of a blend of isodecyl pelargonate, hexadecyl isostearate, and methyl-phenyl silicone, a blend of isodecyl pelargonate, tridecyl azelate, and methyl-phenyl silicone, and a blend of ethylhexyl adipate and methyl-phenyl silicone; from 4.9 to 7.5 weight percent of lithium stearate; from 2 to 3 weight percent of a rust inhibitor selected from the class consisting of barium and lead dinonylnaphthalene sulfonate; from 1.5 to 5 weight percent of antimony dialkylphosphorodithioate; from 0.2 to 0.6 weight percent of 2,6-di-tert-butyl-4-methylphenol and from 0.25 to 0.6 weight percent of a copper-silver corrosion inhibitor selected from the class consisting of tolyltriazol, disalicylal-propylenediamine, and 2-mercaptobenzothiazole.
Inventors
- 👤 Robert N. Bolster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:18
CPC Classifications
C; C10; C10M; C10M7/00; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/34; C10M2215/00; C10M2215/14; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2229/00; C10M2229/04; C10M2229/043; C10M2229/044; C10N; C10N2010/00; C10N2010/08; C10N2010/10; C10N2040/00; C10N2040/06; C10N2050/00; C10N2050/08; C10N2050/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
120 words
A grease composition which comprises: from 82 to 89 weight percent of an ester-silicone oil base selected from the group consisting of a blend of isodecyl pelargonate, hexadecyl isostearate, and methyl-phenyl silicone, a blend of isodecyl pelargonate, tridecyl azelate, and methylphenyl silicone, and a blend of ethylhexyl adipate and methylphenyl silicone; from 4.9 to 7.5 weight percent of lithium stearate; from 1.7 to 3 weight percent of a rust inhibitor selected from the class consisting of barium and lead dinonylnaphthalene sulfonate; from 1.5 to 5 weight percent of antimony dialkylphosphorodithioate; from 0.25 to 0.6 weight percent of a copper-silver corrosion inhibitor selected from the class consisting of tolyltriazol, disalicylal-propylene-diamine, and 2-mercaptobenzothiazole; and from 0.2 to 0.6 weight percent of 2,6-di-tert-butyl-4-methylphenol.
Claim 2
Dependent Claim
120 words
A grease composition which comprises: from 82 to 89 weight percent of an ester-silicone oil base selected from the group consisting of a blend of isodecyl pelargonate, hexadecyl isostearate, and methyl-phenyl silicone, a blend of isodecyl pelargonate, tridecyl azelate, and methylphenyl silicone, and a blend of ethylhexyl adipate and methylphenyl silicone; from 4.9 to 7.5 weight percent of lithium stearate; from 1.7 to 3 weight percent of a rust inhibitor selected from the class consisting of barium and lead dinonylnaphthalene sulfonate; from 1.5 to 5 weight percent of antimony dialkylphosphorodithioate; from 0.25 to 0.6 weight percent of a copper-silver corrosion inhibitor selected from the class consisting of tolyltriazol, disalicylal-propylene-diamine, and 2-mercaptobenzothiazole; and from 0.2 to 0.6 weight percent of 2,6-di-tert-butyl-4-methylphenol.
Claim 3
Dependent Claim
44 words
The grease composition of claim 1 wherein said ester-silicone oil base, based on total composition weight, is from 31 to 44 weight percent of isodecylpelargonate, from 26 to 39 weight percent of hexadecyl isostearate, and from 13 to 22 weight percent of methyl-phenyl silicone.
Claim 4
Dependent Claim
45 words
The grease composition of claim 1 wherein the estersilicone oil base, based on total composition weight, is from 35 to 50 weight percent of isodecyl pelargonate, from 25 to 40 weight percent of tridecyl azelate, and from 15 to 30 weight percent of methyl-phenyl silicone.
Claim 5
Dependent Claim
36 words
The grease composition of claim 1 wherein the estersilicone oil base, based on total composition weight, is from 70 to 85 weight percent of ethylhexyl adipate and from 15 to 30 weight percent of methyl-phenyl silicone.
Claim 6
Dependent Claim
14 words
The grease composition of claim 1 wherein said rust inhibitor is lead dinonylnaphthalene sulfonate.
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) | 1979-09-21 | 1980-03-22 | 1980-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-21 | 1984-03-22 | 1984-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-21 | 1988-03-22 | 1988-09-21 | $7700.00 | Window Closed / Lapsed |