US3923702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of distillation residues to useful metal working lubricants
Assignee: Henkel Corp
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Filing: 1974-08-08
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Granted: 1975-12-02
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Expires: 1994-08-08
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
2026-11-02 06:39
CPC Classifications
C; C10; C10M; C10M109/00; C10M109/02; C10M173/00; C10M3/00; 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: 11
Claim 1
Independent Claim
85 words
A PROCESS FOR CONVERTING RESIDUES, OBTAINED WHEN FATTY ACIDS PRODUCED FROM FAT-SPLITTING PROCESSES ARE DISTILLED, TO USEFUL LUBRICANTS WHICH COMPRISES CONTACTING THE RESIDUE WITH A HYDROXYLIC COMPOUND CONTAINING AT LEAST ONE HYDROXYL GROUP AND AT LEAST FOUR CARBON ATOMS AT A TEMPERATURE ABOVE 100*C WHILE REMOVING WATER FROM THE REACTION MIXTURE UNTIL THE ACID VALUE OF THE PRODUCT IS ABOUT 10 OR BELOW, THE EQUIVALENTS RATIO OF SAID HYDROXYLIC COMPOUND TO SAID RESIDUE BEING 1:1 OR HIGHER, BASED ON THE ACID VALUE OF THE RESIDUE.
Claim 2
Dependent Claim
85 words
A PROCESS FOR CONVERTING RESIDUES, OBTAINED WHEN FATTY ACIDS PRODUCED FROM FAT-SPLITTING PROCESSES ARE DISTILLED, TO USEFUL LUBRICANTS WHICH COMPRISES CONTACTING THE RESIDUE WITH A HYDROXYLIC COMPOUND CONTAINING AT LEAST ONE HYDROXYL GROUP AND AT LEAST FOUR CARBON ATOMS AT A TEMPERATURE ABOVE 100*C WHILE REMOVING WATER FROM THE REACTION MIXTURE UNTIL THE ACID VALUE OF THE PRODUCT IS ABOUT 10 OR BELOW, THE EQUIVALENTS RATIO OF SAID HYDROXYLIC COMPOUND TO SAID RESIDUE BEING 1:1 OR HIGHER, BASED ON THE ACID VALUE OF THE RESIDUE.
Claim 3
Dependent Claim
33 words
The process of claim 1 wherein the residue 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 4
Dependent Claim
52 words
The process of claim 1 wherein the temperature is maintained between about 150* and 250*C and the hydroxylic compound is selected from the group consisting of aliphatic, cycloaliphatic and aromatic, mono-, di- and polyhydric alcohols containing six to 20 carbon atoms and polyoxyalkylene glycols having molecular weights from about 100 to 4,000.
Claim 5
Dependent Claim
24 words
The process of claim 3 conducted to an acid value of 5 or below and wherein the temperature is between about 180* and 230*C.
Claim 6
Dependent Claim
16 words
The process of claim 3 wherein the reaction product is treated with diatomaceous earth and filtered.
Claim 7
Dependent Claim
9 words
The composition prepared by the process of claim 1.
Claim 8
Dependent Claim
9 words
The composition prepared by the process of claim 3.
Claim 9
Dependent Claim
30 words
The composition of claim 7 which is further characterized by having an acid value of 5 or below, a flash point above 500*C and a fire point greater than 540*C.
Claim 10
Dependent Claim
11 words
The composition of claim 8 wherein the hydroxylic compound is 2-ethylhexanol.
Claim 11
Dependent Claim
12 words
The composition of claim 8 wherein the hydroxylic compound is isodecyl alcohol.
References Cited (Backward Citations)
US3778454A
Cited
US3702301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |