US4419252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous lubricant
Assignee: Mobil Oil AS
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Filing: 1982-10-22
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Granted: 1983-12-06
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Expires: 2002-10-22
Abstract
Abstract A lubricant concentrate is provided for forming stable, translucent oil-in-water emulsions upon dilution with a major part of water. The concentrate comprises a suitable base oil blended with polyisobutylene and an emulsifier/dispersant and antiwear/antirust inhibitor system. Typical emulsifier/dispersants include the metal soaps of rosin acids, the alkylene oxide condensation products of a fatty amine or the reaction product thereof with a polyalkenylsuccinic acid or anhydride. Zinc dialkyldithiophosphates and metal dialkylnaphthalene sulfonates are useful antiwear and antirust inhibitors.
Inventors
- 👤 Joosup Shim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:56
CPC Classifications
C; C10; C10M; C10M173/00; C10M135/00; C10M135/08; C10M135/10; C10M137/00; C10M137/02; C10M137/04; C10M137/10; C10M143/00; C10M143/08; C10M2201/00; C10M2201/02; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/028; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/16; C10M2207/18; C10M2207/20; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/12; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/08; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
109 words
A lubricant concentrate for forming oil-in-water emulsions upon dilution with water comprising a suitable mineral base oil having a viscosity ranging from about 60 SSU to about 6,000 SSU blended with: (1) about 20 to 65% by weight of an emulsifier/dispersant system comprising: (a) an alkali or alkaline earth metal soap of rosin acids, and (b) an alkylene oxide condensation product of a fatty amine or the reaction product thereof with a polyalkenylsuccinic acid or anhydride, and (2) about 10 to 20% by weight of an antiwear/antirust inhibitor system comprising: (c) a zinc dialkyldithiophosphate, and (d) a metal dialkylnaphthalene sulfonate, and (3) about 0.001 to 3.0% by weight polyisobutylene.
Claim 2
Dependent Claim
109 words
A lubricant concentrate for forming oil-in-water emulsions upon dilution with water comprising a suitable mineral base oil having a viscosity ranging from about 60 SSU to about 6,000 SSU blended with: (1) about 20 to 65% by weight of an emulsifier/dispersant system comprising: (a) an alkali or alkaline earth metal soap of rosin acids, and (b) an alkylene oxide condensation product of a fatty amine or the reaction product thereof with a polyalkenylsuccinic acid or anhydride, and (2) about 10 to 20% by weight of an antiwear/antirust inhibitor system comprising: (c) a zinc dialkyldithiophosphate, and (d) a metal dialkylnaphthalene sulfonate, and (3) about 0.001 to 3.0% by weight polyisobutylene.
Claim 3
Dependent Claim
27 words
The concentrate of claim 1, wherein the emulsifier/dispersant system is the potassium soap of rosin acids and the reaction product of polybutenylsuccinic anhydride and polyoxyethylene tallow amine.
Claim 4
Dependent Claim
19 words
The concentrate of claim 1, wherein the emulsifier/dispersant system is the potassium soap of rosin acids and polyoxyethylene soyamine.
Claim 5
Dependent Claim
18 words
The concentrate of claim 1, wherein the antiwear/antirust system is zinc di(n-octyl primary) dithiophosphate and calcium dinonylnaphthalene sulfonate.
Claim 6
Dependent Claim
20 words
The concentrate of claim 2 or 3, wherein the antiwear/antirust system is zinc di(n-octyl primary) dithiophosphate and calcium dinonylnaphthalene sulfonate.
Claim 7
Dependent Claim
31 words
A high water base fluid suitable for use as a hydraulic fluid comprising 80 to 99 weight percent water and 0.005 to 5 weight percent of the concentrate of claim 1.
Claim 8
Dependent Claim
31 words
A high water base fluid suitable for use as a hydraulic fluid comprising 80 to 99 weight percent water and 0.005 to 5 weight percent of the concentrate of claim 2.
Claim 9
Dependent Claim
31 words
A high water base fluid suitable for use as a hydraulic fluid comprising 80 to 99 weight percent water and 0.005 to 5 weight percent of the concentrate of claim 3.
Claim 10
Dependent Claim
31 words
A high water base fluid suitable for use as a hydraulic fluid comprising 80 to 99 weight percent water and 0.005 to 5 weight percent of the concentrate of claim 4.
Claim 11
Dependent Claim
31 words
A high water base fluid suitable for use as a hydraulic fluid comprising 80 to 99 weight percent water and 0.005 to 5 weight percent of the concentrate of claim 5.
Claim 12
Dependent Claim
38 words
In a method for lubricating hydraulic pumps having at least two metal surfaces in frictional contact with each other by applying thereto an aqueous lubricant composition, the improvement of using as the lubricant the composition of claim 6.
Claim 13
Dependent Claim
14 words
The method of claim 11 wherein the lubricant is the composition of claim 7.
Claim 14
Dependent Claim
14 words
The method of claim 11 wherein the lubricant is the composition of claim 8.
Claim 15
Dependent Claim
14 words
The method of claim 11 wherein the lubricant is the composition of claim 9.
Claim 16
Dependent Claim
14 words
The method of claim 11 wherein the lubricant is the composition of claim 10.
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) | 1986-12-05 | 1987-06-06 | 1987-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-05 | 1991-06-06 | 1991-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-05 | 1995-06-06 | 1995-12-06 | $7700.00 | Window Closed / Lapsed |