Patent US817665A successfully refreshed from Google Patents.
Patent US3308155A successfully refreshed from Google Patents.
US3308155A
Expired / Lapsed
US
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Preparation of 3, 3-disubstituted carboxylic acids
Assignee: ConocoPhillips Co
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Filing: 1963-02-25
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Granted: 1967-03-07
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Expires: 1983-02-25
Abstract
No abstract record available.
Inventors
- 👤 Allan J Lundeen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:59
CPC Classifications
C; C10; C10M; C10M3/00; C07; C07C; C07C51/00; C07C51/02; C07C51/41; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10N; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A METHOD OF PREPARING A 3,3-DISUBSTITUTED CARBOXYLIC ACID IN WHICH THE 3 POSITION SUBSTITUENTS ARE MONOVALENT HYDROCARBON RADICALS, WHICH METHOD COMPRISES REACTING TRIALKYLALUMINUM WITH A 3,3-DISUBSTITUTED PROPIOLACTONE IN WHICH THE 3 POSITION SUBSTITUENTS ARE MONOVALENT HYDROCARBON RADICALS IN LIQUID PHASE AND AT A TEMPERATURE IN THE RANGE OF -80* TO +100*C., THEREBY FORMING A DIALKYLALUMINUM SALT OF THE CORRESPONDING 3,3-DISUBSTITUTED CARBOXYLIC ACID; AND THEN HYDROLYZING THE ALUMINUM SALT TO THE 3,3-DISUBSTITUTED CARBOXYLIC ACID.
Claim 2
Independent Claim
73 words
A METHOD OF PREPARING A 3,3-DISUBSTITUTED CARBOXYLIC ACID IN WHICH THE 3 POSITION SUBSTITUENTS ARE MONOVALENT HYDROCARBON RADICALS, WHICH METHOD COMPRISES REACTING TRIALKYLALUMINUM WITH A 3,3-DISUBSTITUTED PROPIOLACTONE IN WHICH THE 3 POSITION SUBSTITUENTS ARE MONOVALENT HYDROCARBON RADICALS IN LIQUID PHASE AND AT A TEMPERATURE IN THE RANGE OF -80* TO +100*C., THEREBY FORMING A DIALKYLALUMINUM SALT OF THE CORRESPONDING 3,3-DISUBSTITUTED CARBOXYLIC ACID; AND THEN HYDROLYZING THE ALUMINUM SALT TO THE 3,3-DISUBSTITUTED CARBOXYLIC ACID.
References Cited (Backward Citations)
GB883375A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |