US2807651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing glycols and monoethers of glycols
Assignee: Dow Chemical Co
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Filing: 1956-03-23
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Granted: 1957-09-24
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Expires: 1976-03-23
Abstract
No abstract record available.
Inventors
- 👤 Edgar C Britton
- 👤 Arthur R Sexton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:45
CPC Classifications
C; C07; C07C; C07C31/00; C07C31/18; C07C31/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
THE METHOD OF MAKING GLYCOLS AND MONOETHERS OF GLYCOLS BY THE REACTION OF AN OXIDE SELECTED FROM THE CLASS CONSISTING OF THE OXIDES OF ETHYLENE, PROPYLENE, 1,2BUTYLENE, 2,3-BUTYLENE, ISOBUTYLENE, 1,2-EPOXY-ETHYLBENZENE, 1-BROMOPROPYLENE, AND 1-CHLOROPROPYLENE WITH AN HYDROXY COMPOUND SELECTED FROM THE CLASS CONSISTING OF WATER, PRIMARY AND SECONDARY ACYLIC ALCOHOLS, ALICYCLIC ALCOHOLS, PRIMARY AROMATIC ALCOHOLS, SECONDARY AROMATIC ALCOHOLS IN WHICH THE HYDROXYL GROUP IT ATTACHED TO A CARBON ATOM THAN THE ALPHA CARBON ATOM, AND PHENOXY ALCOHOLS, SAID REACTION BEING CATALYZED BY SULFUR DIOXIDE.
Claim 2
Independent Claim
83 words
THE METHOD OF MAKING GLYCOLS AND MONOETHERS OF GLYCOLS BY THE REACTION OF AN OXIDE SELECTED FROM THE CLASS CONSISTING OF THE OXIDES OF ETHYLENE, PROPYLENE, 1,2BUTYLENE, 2,3-BUTYLENE, ISOBUTYLENE, 1,2-EPOXY-ETHYLBENZENE, 1-BROMOPROPYLENE, AND 1-CHLOROPROPYLENE WITH AN HYDROXY COMPOUND SELECTED FROM THE CLASS CONSISTING OF WATER, PRIMARY AND SECONDARY ACYLIC ALCOHOLS, ALICYCLIC ALCOHOLS, PRIMARY AROMATIC ALCOHOLS, SECONDARY AROMATIC ALCOHOLS IN WHICH THE HYDROXYL GROUP IT ATTACHED TO A CARBON ATOM THAN THE ALPHA CARBON ATOM, AND PHENOXY ALCOHOLS, SAID REACTION BEING CATALYZED BY SULFUR DIOXIDE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |