US4101431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine lubricant
Assignee: Texaco Inc
•
Filing: 1977-05-12
•
Granted: 1978-07-18
•
Expires: 1997-05-12
Abstract
Abstract Described herein is an extreme pressure turbine lubricant exhibiting improved vapor space rust protection, oxidation stability and air release properties comprising synthetically derived triarylphosphates, benzotriazole, a 2,6-di-t-butylphenol as antioxidant, a phenol-free anti-rust concentrate and caprylic or capric acid.
Inventors
- 👤 Lawrence F. Kuntschik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:52
CPC Classifications
C; C10; C10M; C10M161/00; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/123; C10M2207/129; C10M2207/22; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2215/00; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10M2219/00; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2040/00; C10N2040/02; C10N2040/08; C10N2040/135
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
180 words
A vapor phase rust inhibited, oxidation stable, lubricating composition having improved air release properties and comprising in combination, a major amount of a mineral lubricating oil; a minor effective oxidation stabilizing amount of a heterocyclic antioxidant compound of the formula: ##STR6## 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 a polyacrylate anti-foaming agent, a minor effective vapor phase rust inhibiting amount of a C 8 to C 10 monocarboxylic fatty acid, a minor work load improving amount of a mixture of synthetic tri(isopropylated phenol) phosphates, a minor effective antioxidant amount of a 2,6-ditertiary alkyl phenol antioxidant and a minor effective antirust amount of a phenol-free antirust concentrate consisting of oil-soluble polycarboxylic acids having alkyl groups of 6 to 30 carbon atoms and alkylacid orthophosphates.
Claim 2
Dependent Claim
180 words
A vapor phase rust inhibited, oxidation stable, lubricating composition having improved air release properties and comprising in combination, a major amount of a mineral lubricating oil; a minor effective oxidation stabilizing amount of a heterocyclic antioxidant compound of the formula: ##STR6## 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 a polyacrylate anti-foaming agent, a minor effective vapor phase rust inhibiting amount of a C 8 to C 10 monocarboxylic fatty acid, a minor work load improving amount of a mixture of synthetic tri(isopropylated phenol) phosphates, a minor effective antioxidant amount of a 2,6-ditertiary alkyl phenol antioxidant and a minor effective antirust amount of a phenol-free antirust concentrate consisting of oil-soluble polycarboxylic acids having alkyl groups of 6 to 30 carbon atoms and alkylacid orthophosphates.
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
10 words
The composition of claim 1 wherein said antioxidant is 2,6-ditertiarybutylphenol.
Claim 7
Dependent Claim
13 words
A composition in accordance with claim 1 wherein said heterocyclic antioxidant is benzotriazole.
Claim 8
Dependent Claim
63 words
A composition in accordance with claim 1 containing: ______________________________________
Percent Weight
______________________________________
(Anti-rust concentrate) consisting
of polycarboxylic acids having 6 to
30 carbon atoms and alkyl acid
orthophosphates 0.05 to 1.0
2,6ditertiarybutylphenol
0.01 to 0.20
tri(isopropylated phenol)
0.01 to 5.00
C.sub. 8 to C.sub.10 monocarboxylic fatty acid
0.02 to 3.00
benzotriazole 0.001 to 0.30
polyacrylate antifoamant
.001 to 0.500
Mineral oil Balance.
______________________________________
Claim 9
Dependent Claim
25 words
The composition of claim 7, wherein said antirust concentrate consists of alkylmaleic acid in diluent oil with a mixture of dodecyldihydrogen phosphate and didodecyldihydrogen phosphate.
Claim 10
Dependent Claim
47 words
A composition according to claim 1 containing: ______________________________________
Percent weight
______________________________________
Anti-rust concentrate consisting of
polycarboxylic acids having 6 to 30
carbon atoms and alkyl acid orthophosphates
0.1
2,6-ditertiarybutylphenol
0.3
tri(isopropylphenyl) phosphates
2.0
caprylic acid 0.075
benzotriazole 0.017
poly(2-ethylhexyl) acrylate antifoamant ppm
50
Mineral Oil Balance.
______________________________________
Claim 11
Dependent Claim
20 words
The composition of claim 1 wherein said oil has an SUS viscosity at 100° F ranging from 70 to 5000.
References Cited (Backward Citations)
US3931022A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |