US3915668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crude oils and residual fuel oils containing a terpolymer of ethylene, vinyl ester, and dialkylvinyl carbinol
Assignee: Ethyl Corp
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Filing: 1974-11-11
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Granted: 1975-10-28
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Expires: 1994-11-11
Abstract
Abstract Crude oils and residual fuel oils having improved pour point and flow properties are obtained by incorporating therein a small amount of a new terpolymer prepared from ethylene, a vinyl ester, and a dialkylvinyl carbinol. The terpolymer has a number average molecular weight of about 500-10,000 and suitably contains 45-80 wt. % ethylene, 10-25 wt. % vinyl ester of a fatty acid having up to about eight carbon atoms and 10-30 wt. % dialkylvinyl carbinol wherein the alkyl groups have up to about six carbon atoms.
Inventors
- 👤 Robert J Basalay
- 👤 Peter G Pappas
- 👤 Walter C Edmisten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:19
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/192; C10L1/195; C10L1/197; C10L1/1973
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
103 words
AN OIL COMPOSITION, HAVING IMPROVED POUR POINT AND FLOW PROPERTIES COMPRISING A MAJOR PORTION OF AN OIL, SELECTED FROM THE GROUP CONSISTING OF CRUDE OIL AND RESIDUAL FUEL OIL, AND FROM ABOUT 0.001 WT. % TO ABOUT 5 WT. % OF THE TERPOLYMER COMPOSITION CONSISTING OF 45-80 WT. % ETHYLENE, 10-25 WT. % VINYL ESTER OF A FATTY ACID HAVING UP TO ABOUT EIGHT CARBON ATOMS, AND 10-30 WT. % OF A DIALKYLVINYL CARBINOL WHEREIN THE ALKYL GROUPS HAVE UP TO ABOUT SIX CARBON ATOMS, SAID TERPOLYMER HAVING A NUMBER AVERAGE MOLECULAR WEIGHT IN THE RANGE OF FROM ABOUT 500 TO ABOUT 10,000.
Claim 2
Dependent Claim
103 words
AN OIL COMPOSITION, HAVING IMPROVED POUR POINT AND FLOW PROPERTIES COMPRISING A MAJOR PORTION OF AN OIL, SELECTED FROM THE GROUP CONSISTING OF CRUDE OIL AND RESIDUAL FUEL OIL, AND FROM ABOUT 0.001 WT. % TO ABOUT 5 WT. % OF THE TERPOLYMER COMPOSITION CONSISTING OF 45-80 WT. % ETHYLENE, 10-25 WT. % VINYL ESTER OF A FATTY ACID HAVING UP TO ABOUT EIGHT CARBON ATOMS, AND 10-30 WT. % OF A DIALKYLVINYL CARBINOL WHEREIN THE ALKYL GROUPS HAVE UP TO ABOUT SIX CARBON ATOMS, SAID TERPOLYMER HAVING A NUMBER AVERAGE MOLECULAR WEIGHT IN THE RANGE OF FROM ABOUT 500 TO ABOUT 10,000.
Claim 3
Dependent Claim
64 words
A residual fuel oil composition, having improved pour point and flow properties, comprising a major portion of residual fuel oil and from about 0.01 wt. % to about 0.1 wt. % of a terpolymer consisting of about 55-70 wt. % ethylene, about 15-25 wt. % dimethylvinyl carbinol, and about 15-20 wt. % vinyl acetate, and having a number average molecular weight of about 2,000-2,500.
Claim 4
Dependent Claim
64 words
A residual fuel oil composition, having improved pour point and flow properties, comprising a major portion of residual fuel oil and from about 0.01 wt. % to about 0.1 wt. % of a terpolymer consisting of about 55-70 wt. % ethylene, about 15-25 wt. % dimethylvinyl carbinol, and about 15-20 wt. % vinyl acetate, and having a number average molecular weight of about 2,000-2,500.
Claim 5
Dependent Claim
149 words
An addition agent concentrate composition for addition to crude oils and residual fuel oils to improve pour point and flow properties at low temperatures, comprising a hydrocarbon solvent boiling at a temperature in the range of from about 100*F to about 700*F and more than 5 wt. % of the terpolymer composition consisting of 45-80 wt. % ethylene, 10-25 wt. % vinyl ester of a fatty acid having up to about eight carbon atoms, and 10-30 wt. % of a dialkylvinyl carbinol wherein the alkyl groups have up to about six carbon atoms, said terpolymer having a number average molecular weight in the range of from about 500 to about 10,000, said concentrate being capable of dilution with crude oils and with residual fuel oils to produce compositions having improved pour and flow properties and containing from about 0.001 wt. % to about 5 wt. % of said terpolymer.
Claim 6
Dependent Claim
149 words
An addition agent concentrate composition for addition to crude oils and residual fuel oils to improve pour point and flow properties at low temperatures, comprising a hydrocarbon solvent boiling at a temperature in the range of from about 100*F to about 700*F and more than 5 wt. % of the terpolymer composition consisting of 45-80 wt. % ethylene, 10-25 wt. % vinyl ester of a fatty acid having up to about eight carbon atoms, and 10-30 wt. % of a dialkylvinyl carbinol wherein the alkyl groups have up to about six carbon atoms, said terpolymer having a number average molecular weight in the range of from about 500 to about 10,000, said concentrate being capable of dilution with crude oils and with residual fuel oils to produce compositions having improved pour and flow properties and containing from about 0.001 wt. % to about 5 wt. % of said terpolymer.
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) | 1978-10-27 | 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 |