US3915872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of distillation residues to useful metal working lubricants
Assignee: Henkel Corp
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Filing: 1974-10-01
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Granted: 1975-10-28
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Expires: 1994-10-01
Abstract
Abstract Residues resulting from the distillation of fatty acids obtained from fat-splitting processes are converted by the process of this invention to useful metal working lubricants. The present process utilizes distillation residues, which are typically viscous oils ranging in color from dark brown to black and which heretofore had little or no commercial value and were burned or otherwise disposed of, to produce lubricants having performance characteristics which make them suitable for use in continuous metal-casting and other metal working operations.
Inventors
- 👤 Robert J Sturwold
- 👤 Fred O Barrett
- 👤 Walter E Utz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:26
CPC Classifications
C; C11; C11C; C11C1/00; C11C1/02; C11C1/04; C10; C10M; C10M109/00; C10M109/02; C10M173/00; C11C1/08; C11C1/10; C11C3/00; C11C3/003; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/125; C10M2207/126; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/109; C10N; C10N2020/00; C10N2020/01; C10N2020/013; C10N2020/04; C10N2040/00; C10N2040/20; C10N2070/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
79 words
A LUBRICANT OBTAINED BY REACTING (A) 60 TO 90 WEIGHT PERCENT POLYOXYETHYLENE GLYCOL OF MOLECULAR WEIGHT 100 TO 4000, (B) 7 TO 18 WEIGHT PERCENT CARBOXYLIC ACID CONTAINING FORM 4 TO 15 CARBONS ATOMS OR THE ANHYDRIDE OR C1-C4 ALKYL ESTER THERE OF AND (C) 3 TO 26 WEIGHT PERCENT OF A RESIDUCE OBTAINING FROM THE DISTILLATION OF FATTY ACIDS PRODUCED IN FATSPLITTING PROCESSES SAID REACTION CONDUCTED AT A TEMPERATURE ABOVE 100*C WHILE REMOVING WATER FROM THE REACTION MIXTURE.
Claim 2
Dependent Claim
79 words
A LUBRICANT OBTAINED BY REACTING (A) 60 TO 90 WEIGHT PERCENT POLYOXYETHYLENE GLYCOL OF MOLECULAR WEIGHT 100 TO 4000, (B) 7 TO 18 WEIGHT PERCENT CARBOXYLIC ACID CONTAINING FORM 4 TO 15 CARBONS ATOMS OR THE ANHYDRIDE OR C1-C4 ALKYL ESTER THERE OF AND (C) 3 TO 26 WEIGHT PERCENT OF A RESIDUCE OBTAINING FROM THE DISTILLATION OF FATTY ACIDS PRODUCED IN FATSPLITTING PROCESSES SAID REACTION CONDUCTED AT A TEMPERATURE ABOVE 100*C WHILE REMOVING WATER FROM THE REACTION MIXTURE.
Claim 3
Dependent Claim
18 words
The lubricant of claim 1 which is further characterized as being soluble in cold water in all proportions.
Claim 4
Dependent Claim
35 words
The lubricant of claim 1 wherein the distillation residue (c) has an iodine value from about 50 to 100, an acid value between about 50 and 100 and a saponification value between 100 and 200.
Claim 5
Dependent Claim
8 words
The lubricant of claim 1 in aqueous solution.
Claim 6
Dependent Claim
33 words
The lubricant of claim 1 wherein (a) has a molecular weight from about 400 to 2000, (b) contains from 6 to 10 carbon atoms and the reaction temperature is between 150* and 250*C.
Claim 7
Dependent Claim
53 words
The lubricant of claim 1 containing 65 to 80 percent (a), 11 to 15 percent (b) and 5 to 25 percent of a distillation residue (c) having an iodine value from about 50 to 100, an acid value between about 50 and 100 and a saponification value between 100 and 200 are reacted.
Claim 8
Dependent Claim
10 words
The lubricant of claim 5 wherein (b) is azelaic acid.
Claim 9
Dependent Claim
27 words
The lubricant of claim 6 characterized as having a flash point above 500*C, a fire point greater than 540*C and soluble in cold water in all proportions.
Claim 10
Dependent Claim
10 words
The lubricant of claim 6 treated with a diatomaceous earth.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |