Patent US2968679A successfully refreshed from Google Patents.
US2968679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyallylation of phenol
Assignee: General Mills Inc
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Filing: 1958-01-17
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Granted: 1961-01-17
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Expires: 1978-01-17
Abstract
No abstract record available.
Inventors
- 👤 Aelony David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:31
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/11; C07C37/18; C07C37/64; C07C37/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
PROCESS OF PREPARING POLYALLYLATED PHENOLIC COMPOUNDS WHICH COMPRISES REACTING SODIUM PHENOXIDE WITH FROM 2 TO 4 MOLS OF ALLYL CHLORIDE UNDER ANHYDROUS CONDITIONS IN THE PRESENCE OF A SUSPENSION OF SOLID SODIUM HYDROXIDE IN AN AROMATIC NON-POLAR SOLVENT AT A TEMPERATURE IN THE RANGE OF 80-140*C. TO INTRODUCE AT LEAST TWO ALLYL GROUPS INTO THE PHENOLIC NECLEUS.
Claim 2
Dependent Claim
33 words
PROCESS ACCORDING TO CLAIM 4 IN WHICH THE ALLYL PHENOL IS CONVERTED TO THE ALLYL ETHER OF ALLYL PHENOL BY A FURTHER REACTION WITH ALLYL CHLORIDE IN THE PRESENCE OF A POLAR SOLVENT.
References Cited (Backward Citations)
DE412169C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |