US3640860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricatng composition and method for treating metal-mold interface in continuous casting operation
Assignee: Atlantic Richfield Co
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Filing: 1969-06-02
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Granted: 1972-02-08
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Expires: 1989-06-02
Abstract
Abstract A lubricating composition is prepared suitable for lubricating the interface of liquid metal and mold during the continuous casting of metals. This lubricating composition contains both the dimer and trimer of an unsaturated fatty acid, a glyceride oil, e.g., triglyceride, as a solubilizing agent, and a mineral lubricating oil having a low-carbon residue and low-aromatic carbon content which can be prepared by a two-stage catalytic hydrogenation process.
Inventors
- 👤 Virgil A Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:59
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10G; C10G2400/00; C10G2400/10; C10M2203/00; C10M2203/10; C10M2203/104; C10M2203/106; C10M2207/00; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
26 words
The composition of claim 1 in which the glyceride oil is present in amount up to at least about 30 weight percent of said lubricating composition.
Claim 2
Dependent Claim
21 words
The composition of claim 2 in which the dimer and trimer unsaturated fatty acid is an acid of 18 carbon atoms.
Claim 3
Dependent Claim
31 words
The composition of claim 1 wherein the total dimer and trimer of an unsaturated fatty acid is present in amount of about 3 to 10 weight percent of said lubricating composition.
Claim 4
Dependent Claim
34 words
The composition of claim 1 wherein the mineral oil of lubricating viscosity has a viscosity of at least about 100 S.U.S. at 100* F. and contains at least about 60 percent paraffinic carbon atoms.
Claim 5
Dependent Claim
66 words
The composition of claim 1 wherein the mineral oil of lubricating viscosity is prepared by hydrogenating a distillate mineral lubricating oil feedstock in a dual catalytic stage system, the first stage of which employs a sulfur-resistant hydrogenation catalyst at temperatures of about 600* to 750* F., and the second stage of which employs a platinum group metal catalyst at temperatures of about 450* to 700* F.
Claim 6
Dependent Claim
66 words
The composition of claim 3 wherein the mineral oil of lubricating viscosity is prepared by hydrogenating a distillate mineral lubricating oil feedstock in a dual catalytic stage system, the first stage of which employs a sulfur-resistant hydrogenation catalyst at temperatures of about 600* to 750* F. and the second stage of which employs a platinum group metal catalyst at temperatures of about 450* to 700* F.
Claim 7
Dependent Claim
26 words
The composition of claim 7 wherein the first stage catalyst has nickel or cobalt and molybdenum supported on alumina and the second stage catalyst is platinum-alumina.
Claim 8
Dependent Claim
27 words
A method of lubricating the metal-mold interface in the continuous casting of metals process which comprises providing a lubricating composition of claim 1 to said metal-mold interface.
Claim 9
Dependent Claim
27 words
A method of lubricating the metal-mold interface in the continuous casting of metals process which comprises providing a lubricating composition of claim 3 to said metal-mold interface.
Claim 10
Dependent Claim
27 words
A method of lubricating the metal-mold interface in the continuous casting of metals process which comprises providing a lubricating composition of claim 4 to said metal-mold interface.
Claim 11
Dependent Claim
27 words
A method of lubricating the metal-mold interface in the continuous casting of metals process which comprises providing a lubricating composition of claim 8 to said metal-mold interface.
Claim 12
Dependent Claim
11 words
The method of claim 9 in which the metal is steel.
Claim 13
Dependent Claim
11 words
The method of claim 10 in which the metal is steel.
Claim 14
Dependent Claim
11 words
The method of claim 11 in which the metal is steel.
Claim 15
Dependent Claim
11 words
The method of claim 12 in which the metal is steel.
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) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |