US2866812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylated esters
Assignee: American Oil Co
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Filing: 1956-10-30
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Granted: 1958-12-30
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Expires: 1976-10-30
Abstract
No abstract record available.
Inventors
- 👤 Earl V Kirkland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:37
CPC Classifications
C; C10; C10M; C10M3/00; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A MIXTURE OF OLEFIN-DIOCTYL ADIPATE ALKYLATION PRODUCTS WICH IS PREPARED BY REACTING PROPYLENE WITH DIOCTYL ADIPATE UNDER ALKYLATION REACTION DONCTIONS IN THE PRESENCE OF A FREE RADICAL INITIATING AGENT WHEREUPON ALKYLATION REACTION PRODUCTS COMPRISING ALKYLATED AND NONALKYLATED DIOCTYL ADIPATE AND OLEFINS POLYMERS AE PRODUCED, FRACTIONALLY DISTILLING SAID ALKYLATION REACTION PRODUCTS TO REMOVE OLEFIN POLYMERS WHICH ARE LOWER BOILING THAN DIOCTYL ADIPATE AND RECOVERING A MIXTURE OF ALKYLATED AND NON-ALKYLATED DIOCTYL ADIPATE CONTAINING AT LEAST 5% OF THE ALKYLATED DIOCTYL ADIPATE, SAID RECOVERED MIXTURE HAVING AN AVERAGE MOLECULAR WEIGHT BETWEEN ABOUT 380 AND 500 AND HAVING A HIGHER KINEMATIC VISCOSITY AND A HIGHER VISCOSITY INDEX THAN THE ORIGINAL DIOCTYL ADIPATE.
Claim 2
Dependent Claim
109 words
A MIXTURE OF OLEFIN-DIOCTYL ADIPATE ALKYLATION PRODUCTS WICH IS PREPARED BY REACTING PROPYLENE WITH DIOCTYL ADIPATE UNDER ALKYLATION REACTION DONCTIONS IN THE PRESENCE OF A FREE RADICAL INITIATING AGENT WHEREUPON ALKYLATION REACTION PRODUCTS COMPRISING ALKYLATED AND NONALKYLATED DIOCTYL ADIPATE AND OLEFINS POLYMERS AE PRODUCED, FRACTIONALLY DISTILLING SAID ALKYLATION REACTION PRODUCTS TO REMOVE OLEFIN POLYMERS WHICH ARE LOWER BOILING THAN DIOCTYL ADIPATE AND RECOVERING A MIXTURE OF ALKYLATED AND NON-ALKYLATED DIOCTYL ADIPATE CONTAINING AT LEAST 5% OF THE ALKYLATED DIOCTYL ADIPATE, SAID RECOVERED MIXTURE HAVING AN AVERAGE MOLECULAR WEIGHT BETWEEN ABOUT 380 AND 500 AND HAVING A HIGHER KINEMATIC VISCOSITY AND A HIGHER VISCOSITY INDEX THAN THE ORIGINAL DIOCTYL ADIPATE.
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) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |