US3283013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of 2, 3-dibromo-1-propanol
Assignee: EIDP Inc
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Filing: 1962-06-28
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Granted: 1966-11-01
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Expires: 1982-06-28
Abstract
No abstract record available.
Inventors
- 👤 Robert W Rimmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:40
CPC Classifications
C; C07; C07C; C07C31/00; C07C31/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
THE PROCESS THE PREPARATION OF 2,3-DIBROMO-1PROPANOL WHICH COMPRISES (A) BROMINATING ALLYL ALCOHOL, (B) AT A TEMPERATURE OF ABOUT -20*C. TO 100*C., (C) WITH ABOUT 1 MOL OF ELEMENTAL BROMINE FOR EACH MOL OF THE ALLYL ALCOHOL, (D) IN THE PRESENCE OF ABOUT 5% TO ABOUT 50% BY WEIGHT, BASED ON THE ALLYL ALCOHOL, OF CALCIUM BROMIDE DIHYDRATE, (E) IN ABOUT 50% TO ABOUT 500% BY VOLUME, BASED ON THE ALLYL ALCOHOL, A LIQUID, INERT, NON-POLAR ORGANIC SOLVENT HAVING A NORMAL BOILING POINT IN THE RANGE OF ABOUT -20*C. TO ABOUT 185*C.
Claim 2
Dependent Claim
91 words
THE PROCESS THE PREPARATION OF 2,3-DIBROMO-1PROPANOL WHICH COMPRISES (A) BROMINATING ALLYL ALCOHOL, (B) AT A TEMPERATURE OF ABOUT -20*C. TO 100*C., (C) WITH ABOUT 1 MOL OF ELEMENTAL BROMINE FOR EACH MOL OF THE ALLYL ALCOHOL, (D) IN THE PRESENCE OF ABOUT 5% TO ABOUT 50% BY WEIGHT, BASED ON THE ALLYL ALCOHOL, OF CALCIUM BROMIDE DIHYDRATE, (E) IN ABOUT 50% TO ABOUT 500% BY VOLUME, BASED ON THE ALLYL ALCOHOL, A LIQUID, INERT, NON-POLAR ORGANIC SOLVENT HAVING A NORMAL BOILING POINT IN THE RANGE OF ABOUT -20*C. TO ABOUT 185*C.
References Cited (Backward Citations)
GB570374A
Cited
DE1089743B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |