Patent US3250813A successfully refreshed from Google Patents.
US3250813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of allyl ethers
Assignee: Monsanto Chemicals Ltd
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Filing: 1961-07-11
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Granted: 1966-05-10
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Expires: 1981-07-11
Abstract
No abstract record available.
Inventors
- 👤 Stephenson Robert James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:39
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/14; C07C69/00; C07C69/02; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
THE METHOD OF PREPARING ALLYL ETHERS WHICH COMPRISES CONTACTNG AN ALLYL ALCOHOL WITH AN ALIPHATIC ALCOHOL AT A TEMPERATURE OF FROM ABOUT 60 TO 150*C. IN THE PRESENCE OF A CATALYST CONSISTING OF A CUPROUS SALT AND AN ACID CO-CATALYST SELECTED FROM THE GROUP CONSISTING OF PHOSPHORIC ACID, BORON TRIFLUORIDE, ALUMINUM CHLORIDE, SULPHURIC ACID, SULPHAMIC ACID, BENZENESULPHONIC ACID, PTOLUNESULPHONIC ACID, METHANESULPHONIC ACID, ETHYL HYDROGEN SULPHATE, SULPHONATED STYRENE ION-EXCHANGE RESINS; SAID CUPROUS SALT BEING PRESENT IN THE PROPORTION OF FROM 0.001 TO 0.1 MOL PER MOL OF ALLYL ALCOHOL AND SAID ACID CO-CATALYST BEING PRESENT IN THE PROPORTION OF FROM 0.1 TO 50 EQUIVALENTS PER MOL OF CUPROUS SALT; WHEREIN THE SAID ALIPHATIC ALCOHOL HAS FROM 1 TO 6 HYDROXYL GROUP AND IS SELECTED FROM THE CLASS CONSISTING OF SUBSTITUTED AND UNSUBSTITUTED ALIPHATIC ALCOHOL, WHEREIN THE SUBSTITUTED GROUP ARE SELECTED FROM THE CLASS CONSISTING OF ALKYLS OF FROM 1 TO 4 CARBON ATOMS, HALOGEN, NITRO AND ALKOXYS OF FROM 1 TO 4 CARBON ATOMS; SAID ALLYL ALCOHOL HAVING A STRUCTURE CORRESPONDING TO THE GENERAL FORMULA
Claim 2
Independent Claim
174 words
THE METHOD OF PREPARING ALLYL ETHERS WHICH COMPRISES CONTACTNG AN ALLYL ALCOHOL WITH AN ALIPHATIC ALCOHOL AT A TEMPERATURE OF FROM ABOUT 60 TO 150*C. IN THE PRESENCE OF A CATALYST CONSISTING OF A CUPROUS SALT AND AN ACID CO-CATALYST SELECTED FROM THE GROUP CONSISTING OF PHOSPHORIC ACID, BORON TRIFLUORIDE, ALUMINUM CHLORIDE, SULPHURIC ACID, SULPHAMIC ACID, BENZENESULPHONIC ACID, PTOLUNESULPHONIC ACID, METHANESULPHONIC ACID, ETHYL HYDROGEN SULPHATE, SULPHONATED STYRENE ION-EXCHANGE RESINS; SAID CUPROUS SALT BEING PRESENT IN THE PROPORTION OF FROM 0.001 TO 0.1 MOL PER MOL OF ALLYL ALCOHOL AND SAID ACID CO-CATALYST BEING PRESENT IN THE PROPORTION OF FROM 0.1 TO 50 EQUIVALENTS PER MOL OF CUPROUS SALT; WHEREIN THE SAID ALIPHATIC ALCOHOL HAS FROM 1 TO 6 HYDROXYL GROUP AND IS SELECTED FROM THE CLASS CONSISTING OF SUBSTITUTED AND UNSUBSTITUTED ALIPHATIC ALCOHOL, WHEREIN THE SUBSTITUTED GROUP ARE SELECTED FROM THE CLASS CONSISTING OF ALKYLS OF FROM 1 TO 4 CARBON ATOMS, HALOGEN, NITRO AND ALKOXYS OF FROM 1 TO 4 CARBON ATOMS; SAID ALLYL ALCOHOL HAVING A STRUCTURE CORRESPONDING TO THE GENERAL FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |