US2552980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylation of olefinic compounds
Assignee: Uniroyal Inc
•
Filing: 1949-06-24
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Granted: 1951-05-15
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Expires: 1969-06-24
Abstract
No abstract record available.
Inventors
- 👤 Elbert C Ladd
- 👤 Lewis Y Kiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:56
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/86; C07C2/862; C07C2/867; C07C9/00; C07C9/14; C07C9/16; C07C2531/00; C07C2531/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A METHOD OF ALKYLATING A COMPOUND CONTAINING ETHYLENIC CARBON-TO-CARBON UNSATURATION WHICH COMPRISES HEATING SAID COMPOUND, IN THE PRESENCE OF A PEROXIDIC COMPOUND CATALYST, WITH AN ALPHA-TERTIARY-ALKANAL OF THE FORMULA (R1) (R2) (R2)C-CHO WHERE R1 REPRESENTS A LOWER ALKAYL RADICAL, AND R2 AND R3 EACH BEING ONE OF THE RADICALS METHYL AND ETHYL, AND FORMING THE DESIRED ALKYLATED COMPOUND WITH ELIMINATION OF CARBON MONOXIDE.
Claim 2
Independent Claim
63 words
A METHOD OF ALKYLATING A COMPOUND CONTAINING ETHYLENIC CARBON-TO-CARBON UNSATURATION WHICH COMPRISES HEATING SAID COMPOUND, IN THE PRESENCE OF A PEROXIDIC COMPOUND CATALYST, WITH AN ALPHA-TERTIARY-ALKANAL OF THE FORMULA (R1) (R2) (R2)C-CHO WHERE R1 REPRESENTS A LOWER ALKAYL RADICAL, AND R2 AND R3 EACH BEING ONE OF THE RADICALS METHYL AND ETHYL, AND FORMING THE DESIRED ALKYLATED COMPOUND WITH ELIMINATION OF CARBON MONOXIDE.
References Cited (Backward Citations)
US2402137A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |