US4518512A
Expired / Lapsed
US
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Water-containing lubricant
Assignee: Idemitsu Kosan Co Ltd
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Filing: 1983-12-08
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Granted: 1985-05-21
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Expires: 2003-12-08
Abstract
Abstract A water containing lubricant comprising a lubricating base oil, and a water-soluble corrosion inhibitor and water dispersed in the base oil by the use of a mixture of several surfactants having a specific hydrophile lipophile balance (HLB) value, respectively. The lubricant of this invention is a transparent dispersion containing a relatively large amount of water in the base oil, and is useful as an emulsion type metal working oils, hydrolic fluids, gear oils, engine oils, etc.
Inventors
- 👤 Hideo Kanamori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:13
CPC Classifications
C; C10; C10M; C10M173/00; C10M129/00; C10M129/02; C10M129/26; C10M129/28; C10M129/38; C10M129/40; C10M129/56; C10M129/58; C10M129/64; C10M133/00; C10M133/02; C10M133/04; C10M133/06; C10M133/08; C10M2201/00; C10M2201/02; C10M2201/06; C10M2201/062; C10M2201/08; C10M2201/082; C10M2201/083; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/123; C10M2207/125; C10M2207/126; C10M2207/129; C10M2207/16; C10M2207/22; C10M2207/28; C10M2207/287; C10M2207/289; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/044; C10M2215/24; C10M2215/26; C10M2219/00; C10M2219/04; C10M2219/042; C10M2219/044; C10N; C10N2010/00; C10N2010/02; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/02; C10N2040/08; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
241 words
A water-containing lubricant comprising per 100 parts by weight of a lubricating base oil, from 0.1 to 20 parts by weight of a water-soluble corrosion inhibitor and from 1 to 1,000 parts by weight of water dispersed in the base oil by the use of a surfactant mixture, said surfactant mixture consisting essentially of (1) from 2 to 80 parts by weight of a nonionic surfactant selected from the group consisting of an ester of fatty acid and polyhydric alcohol, or polyoxyalkylene type compound, aliphatic alcohol having from 7 to 30 carbon atoms and fatty acid having from 7 to 30 carbon atoms, having a hydrophile lipophile balance (HLB) value of less than 6, (2) from 2 to 80 parts by weight of a nonionic surfactant which is an ester of fatty acid and polyhydric alcohol, or a polyoxyalkylene type compound, having a HLB value of from 6 to less than 11, (3) from 2 to 80 parts by weight of a nonionic surfactant which is an ester of fatty acid and polyhydric alcohol, or polyoxyalkylene type compound, having a HLB value of from 11 to less than 20, and (4) from 0.5 to 80 parts by weight of an ionic surfactant selected from the group consisting of metal salts of fatty acid having from 7 to 18 carbon atoms, metal salts of naphthenic acid, esters of alkyl sulfates and alkyl sulfonates, having a HLB value of not less than 15.
Claim 2
Dependent Claim
241 words
A water-containing lubricant comprising per 100 parts by weight of a lubricating base oil, from 0.1 to 20 parts by weight of a water-soluble corrosion inhibitor and from 1 to 1,000 parts by weight of water dispersed in the base oil by the use of a surfactant mixture, said surfactant mixture consisting essentially of (1) from 2 to 80 parts by weight of a nonionic surfactant selected from the group consisting of an ester of fatty acid and polyhydric alcohol, or polyoxyalkylene type compound, aliphatic alcohol having from 7 to 30 carbon atoms and fatty acid having from 7 to 30 carbon atoms, having a hydrophile lipophile balance (HLB) value of less than 6, (2) from 2 to 80 parts by weight of a nonionic surfactant which is an ester of fatty acid and polyhydric alcohol, or a polyoxyalkylene type compound, having a HLB value of from 6 to less than 11, (3) from 2 to 80 parts by weight of a nonionic surfactant which is an ester of fatty acid and polyhydric alcohol, or polyoxyalkylene type compound, having a HLB value of from 11 to less than 20, and (4) from 0.5 to 80 parts by weight of an ionic surfactant selected from the group consisting of metal salts of fatty acid having from 7 to 18 carbon atoms, metal salts of naphthenic acid, esters of alkyl sulfates and alkyl sulfonates, having a HLB value of not less than 15.
Claim 3
Dependent Claim
67 words
The water-containing lubricant as claimed in claim 1 wherein said water-soluble corrosion inhibitor is in an amount from 0.5 to 10 parts by weight; said water is in an amount from 5 to 500 parts; wherein each of said surfactants (1), (2), and (3) is in an amount from 3 to 50 parts; and wherein said surfactant (4) is in an amount from 2 to 50 parts.
Claim 4
Dependent Claim
22 words
The water-containing lubricant as claimed in claim 1 wherein said corrosion inhibitor is selected from the group consisting of alkylamines and alkanolamines.
Claim 5
Dependent Claim
22 words
The water-containing lubricant as claimed in claim 2 wherein said corrosion inhibitor is selected from the group consisting of alkylamines and alkanolamines.
References Cited (Backward Citations)
US4360443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-20 | 1988-11-19 | 1989-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-20 | 1992-11-19 | 1993-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-20 | 1996-11-19 | 1997-05-21 | $7700.00 | Window Closed / Lapsed |