US3893931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ester lubricants suitable for use in aqueous systems
Assignee: Henkel Corp
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Filing: 1974-07-22
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Granted: 1975-07-08
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Expires: 1994-07-22
Abstract
Abstract Ester lubricants derived from high molecular weight aliphatic dibasic acids, polyoxyalkylene glycols and monofunctional aliphatic alcohols are provided. These ester compositions are useful as lubricants and are readily emulsifiable with water. Aqueous emulsions of these esters have superior lubricating and rust inhibiting properties.
Inventors
- 👤 Robert J Sturwold
- 👤 Fred O Barrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:25
CPC Classifications
C; C10; C10M; C10M173/00; C10M173/02; C10M2201/00; C10M2201/02; C10M2209/00; C10M2209/10; C10M2209/11; C10M2209/112; C10N; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
127 words
AN AQUEOUS LUBRICANT COMPOSITION SUITABLE FOR METALWORKING AND HAVING IMPROVED RUST PROTECTION PROPERTIES CONTAINING ABOUT 0.1 TO ABOUT 25 PERCENT BY WEIGHT OF AN ESTER COMPRISING THE CONDENSATION PRODUCT OF 0.05 TO ABOUT 0.5 EQUILAVENT POLYOXYALKYLENE GLYCOL HAVING A MOLECULAR WEIGHT FROM ABOUT 200 TO ABOUT 1000 AND HAVING REPREPEATING ALKYLENE UNITS CONTAINING FROM 2 TO 4 CARBON ATOMS, 0.5 TO 0.95 EQUIVALENT MONOFUNCTIONAL ALCOHOL OF THE FORMULA ROH WHERE R IS AN ALIPHATIC HYDROCARBON RADICAL CONTAINING FROM 1 TO ABOUT 20 CARBON ATOMS AND 1.0 EQUIVALENT OF AN ALIPHATIC DIBASIC ACID CONTAINING FROM ABOUT 30 TO 60 CARBON ATOMS, SAID ESTER HAVING AN ACID VALUE LESS THAN 25, A HYDROXY VALUE LESS THAN 25, AND CONTAINING ABOUT 2 TO ABOUT 40 PERCENT BY WEIGHT POLYOXYALKYLENE GLYCOL.
Claim 2
Dependent Claim
127 words
AN AQUEOUS LUBRICANT COMPOSITION SUITABLE FOR METALWORKING AND HAVING IMPROVED RUST PROTECTION PROPERTIES CONTAINING ABOUT 0.1 TO ABOUT 25 PERCENT BY WEIGHT OF AN ESTER COMPRISING THE CONDENSATION PRODUCT OF 0.05 TO ABOUT 0.5 EQUILAVENT POLYOXYALKYLENE GLYCOL HAVING A MOLECULAR WEIGHT FROM ABOUT 200 TO ABOUT 1000 AND HAVING REPREPEATING ALKYLENE UNITS CONTAINING FROM 2 TO 4 CARBON ATOMS, 0.5 TO 0.95 EQUIVALENT MONOFUNCTIONAL ALCOHOL OF THE FORMULA ROH WHERE R IS AN ALIPHATIC HYDROCARBON RADICAL CONTAINING FROM 1 TO ABOUT 20 CARBON ATOMS AND 1.0 EQUIVALENT OF AN ALIPHATIC DIBASIC ACID CONTAINING FROM ABOUT 30 TO 60 CARBON ATOMS, SAID ESTER HAVING AN ACID VALUE LESS THAN 25, A HYDROXY VALUE LESS THAN 25, AND CONTAINING ABOUT 2 TO ABOUT 40 PERCENT BY WEIGHT POLYOXYALKYLENE GLYCOL.
Claim 3
Dependent Claim
52 words
The aqueous lubricant composition of claim 1 wherein the polyoxyalkylene glycol is a polyethylene glycol having a molecular weight from about 300 to about 800, the monofunctional alcohol contains from about 6 to 16 carbon atoms and the dibasic acid is a dimer acid containing from about 32 to 52 carbon atoms.
Claim 4
Dependent Claim
55 words
The aqueous lubricant composition of claim 2 wherein 0.1 to 0.4 equivalent polyethylene glycol and 0.6 to 0.9 equivalent monofunctional alcohol are reacted per equivalent dimer acid, the ester contains from about 5 to about 30 weight percent polyethylene glycol and has an acid value less than 10 and a hydroxyl value less than 10.
Claim 5
Dependent Claim
43 words
ThE aqueous lubricant composition of claim 3 containing from about 1 to about 10 weight percent of an ester derived from a dibasic acid containing 75% or more C36 dimer acid, a polyethylene glycol having a molecular weight of about 400 and 2-ethylhexanol.
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) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |