US3931022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine lubricant and method
Assignee: Texaco Inc
•
Filing: 1974-09-16
•
Granted: 1976-01-06
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Expires: 1994-09-16
Abstract
Abstract Described herein is a lubricating composition exhibiting vapor space rust protection, improved oxidation stability and air release properties comprising a mineral lubricating oil containing from 0.02 to 3.0 weight percent vapor space rust inhibitor such as a C 8 -C 10 aliphatic carboxylic acid; 0.001 to 0.3 wt % substituted heterocyclic antioxidant such as benzotriazole; 0.05 to 1.0 wt % of a rust inhibitor such as alkyl-succinic acid/alkyl acid phosphate/phenol; 0.001 to 0.500 wt % polymeric antifoamant such as a polyacrylate; 0.01 to 5.0 wt % of an aryl phosphate such as tricresylphosphate; and 0.01 to 2.00 wt % of a hindered alkyl phenol antioxidant such as 4-methyl-2, 6-di-t-butylphenol.
Inventors
- 👤 Ralph P. Chesluk
- 👤 Norman R. Odell
- 👤 Lawrence F. Kuntschik
- 👤 James A. White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:17
CPC Classifications
C; C10; C10M; C10M161/00; C10M129/00; C10M129/02; C10M129/04; C10M129/10; C10M129/26; C10M129/28; C10M129/38; C10M129/40; C10M129/42; C10M133/00; C10M133/02; C10M133/38; C10M133/44; C10M133/48; C10M135/00; C10M135/32; C10M135/36; C10M137/00; C10M137/02; C10M137/04; C10M145/00; C10M145/02; C10M145/10; C10M145/12; C10M145/14; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2207/027; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/125; C10M2207/126; C10M2207/127; C10M2207/129; C10M2207/22; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/22; C10M2215/221; C10M2215/223; C10M2215/225; C10M2215/226; C10M2215/227; C10M2215/24; C10M2215/30; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2040/00; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2040/08; C10N2040/135
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
154 words
A vapor phase rust inhibiting, oxidation stable, lubricating composition having improved air release properties and comprising in combination, a major amount of a mineral lubricating oil having an SUS viscosity at 100°F. between 70 and 5000; a minor effective oxidation stabilizing amount of a heterocyclic anti-oxidant compound of the formula: ##EQU2## wherein R and R 1 are alkyl or aryl, straight or branched chain, or form a six membered ring and have one to 30 carbon atoms each; or can be absent and at least one member of the group ABCDE is carbon and at least three other members are selected from the group of nitrogen, oxygen and sulfur, a minor effective antifoaming amount of an antifoaming agent, a minor effective vapor phase rust inhibiting amount of a C 8 to C 10 aliphatic monocarboxylic acid, a minor work load improving amount of tricresylphosphate and a minor effective antioxidant amount of an alkylphenol antioxidant.
Claim 2
Dependent Claim
154 words
A vapor phase rust inhibiting, oxidation stable, lubricating composition having improved air release properties and comprising in combination, a major amount of a mineral lubricating oil having an SUS viscosity at 100°F. between 70 and 5000; a minor effective oxidation stabilizing amount of a heterocyclic anti-oxidant compound of the formula: ##EQU2## wherein R and R 1 are alkyl or aryl, straight or branched chain, or form a six membered ring and have one to 30 carbon atoms each; or can be absent and at least one member of the group ABCDE is carbon and at least three other members are selected from the group of nitrogen, oxygen and sulfur, a minor effective antifoaming amount of an antifoaming agent, a minor effective vapor phase rust inhibiting amount of a C 8 to C 10 aliphatic monocarboxylic acid, a minor work load improving amount of tricresylphosphate and a minor effective antioxidant amount of an alkylphenol antioxidant.
Claim 3
Dependent Claim
14 words
A composition in accordance with claim 1 wherein the monocarboxylic acid is caprylic acid.
Claim 4
Dependent Claim
14 words
A composition in accordance with claim 1 wherein the monocarboxylic acid is pelargonic acid.
Claim 5
Dependent Claim
14 words
A composition in accordance with claim 1 wherein the monocarboxylic acid is capric acid.
Claim 6
Dependent Claim
15 words
A composition in accordance with claim 1 wherein the antifoamant is a dimethyl silicone polymer.
Claim 7
Dependent Claim
13 words
A composition in accordance with claim 1 wherein said heterocyclic antioxidant is tolutriazole.
Claim 8
Dependent Claim
13 words
A composition in accordance with claim 1 wherein said heterocyclic antioxidant is dihydrobenzotriazole.
Claim 9
Dependent Claim
34 words
A composition according to claim 1 containing: (Anti-rust concentrate)
% wt. 0.1
2,6-ditertiarybutyl-4-methyl phenol
" 0.3
Tricresyl phosphate " 2.0
Caprylic acid " 0.075
Benzotriazole " 0.02
Polyacrylate antifoamant
50 50
Mineral Oil Balance.
Claim 10
Dependent Claim
34 words
A composition according to claim 1 containing: (Anti-rust concentrate)
% Wt. 0.1
2,6-ditertiarybutyl-4-methyl phenol
" 0.3
Tricresyl phosphate " 2.0
Pelargonic acid " 0.075
Benzotriazole " 0.02
Polyacrylate antifoamant
ppm 50
Mineral Oil Balance.
Claim 11
Dependent Claim
34 words
A composition according to claim 1 containing: (Anti-rust concentrate)
% wt. 0.10
2,6-ditertiarybutyl-4-methyl phenol
" 0.3
Tricresyl phosphate " 2.0
Capric acid " 0.075
Benzotriazole " 0.02
Polyacrylate antifoamant
ppm 50
Mineral Oil Balance.
Claim 12
Dependent Claim
34 words
A composition according to claim 1 containing: (Anti-rust concentrate)
% wt. 0.05
2,6-ditertiarybutyl-4-methyl phenol
" 0.3
Tricresyl phosphate " 2.0
Caprylic acid " 0.075
Benzotriazole " 0.02
Polyacrylate antifoamant
ppm 50
Mineral Oil Balance.
Claim 13
Dependent Claim
34 words
A composition according to claim 1 containing: (Anti-rust concentrate)
% wt. 0.05
2,6-ditertiarybutyl-4-methyl phenol
" 0.3
Tricresyl phosphate " 2.0
Caprylic acid " 0.1
Benzotriazole " 0.02
Polyacrylate antifoamant
ppm 50
Mineral Oil Balance.
Claim 14
Dependent Claim
34 words
A composition according to claim 1 containing: (Anti-rust concentrate)
% wt. 0.05
2,6-ditertiarybutyl phenol
" 0.3
Tricresyl phosphate " 2.0
Caprylic acid " 0.10
Benzotriazole " 0.02
Dimethylsilicone polymer
ppm 50
Mineral Oil Balance.
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) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |