US3053897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for forming alkali alcoholates of trialkanolamines
Assignee: Purex Corp Ltd
•
Filing: 1959-01-29
•
Granted: 1962-09-11
•
Expires: 1979-01-29
Abstract
No abstract record available.
Inventors
- 👤 Francis E Clark
- 👤 Newman Kenneth Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:12
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/14; C23G1/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A METHOD FOR FORMING THE ALKALI ALCOHOLATES OF AN ALKANOLAMINE, WHICH COMPRISES: VIGOROUSLY STIRRING A MIXTURE OF A TRIALKANOLAMINE WHEREIN EACH OF THE ALKANOL GROUPS IS FORMED FROM A LOWER ALKYL CHAIN HAVING 2 TO 4 CARBON ATOMS AND A SUBSTANTIALLY ANHYDROUS ALKALI METAL HYDROXIDE IN THE MOL RATIO OF AT LEAST ABOUT ONE GRAM MOL OF ALKALI METAL HYDROXIDE PER GRAM ATOM OF REPLACEABLE HYDROXYL HYDROGEN IN EACH ALKANOL RADICAL AND PRODUCING A DRY POWDER AS A REACTION PRODUCT OF THE ABOVE MIXTURE.
Claim 2
Independent Claim
84 words
A METHOD FOR FORMING THE ALKALI ALCOHOLATES OF AN ALKANOLAMINE, WHICH COMPRISES: VIGOROUSLY STIRRING A MIXTURE OF A TRIALKANOLAMINE WHEREIN EACH OF THE ALKANOL GROUPS IS FORMED FROM A LOWER ALKYL CHAIN HAVING 2 TO 4 CARBON ATOMS AND A SUBSTANTIALLY ANHYDROUS ALKALI METAL HYDROXIDE IN THE MOL RATIO OF AT LEAST ABOUT ONE GRAM MOL OF ALKALI METAL HYDROXIDE PER GRAM ATOM OF REPLACEABLE HYDROXYL HYDROGEN IN EACH ALKANOL RADICAL AND PRODUCING A DRY POWDER AS A REACTION PRODUCT OF THE ABOVE MIXTURE.
References Cited (Backward Citations)
GB304585A
Cited
US1978647A
Cited
US2739129A
Cited
US2544649A
Cited
US2712558A
Cited
US2796443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |