US2689263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of hydroxyalkyl amines
Assignee: Rohm and Haas Co
•
Filing: 1952-04-25
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Granted: 1954-09-14
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Expires: 1972-04-25
Abstract
No abstract record available.
Inventors
- 👤 Claude J Schmidle
- 👤 Gerard C Riley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:39
CPC Classifications
C; C07; C07C; C07C215/00; C07C215/02; C07C215/04; C07C215/06; C07C215/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
THE PROCESS OF PREPARING N-HYDROXYALKYL AMINES WHICH COMPRISES REACTING BETWEEN 50* C. AND 150* C. A 1,2-ALKYLENE OXIDE OF NOT OVER FOUR CARBON ATOMS AND AN AMINE OF THE FORMULA RR''NH, WHEREIN R IS AN ALIPHATIC HYDROCARBON GROUP OF 8 TO 18 CARBON ATOMS AND R'' IS A MEMBER OF THE CLAS CONSISTING OF HYDROGEN AND THE METHYL GROUP, SAID REACTION BEING EFFECTED IN THE PRESENCE OF A SULFONATED CATION-EXCHANGE RESIN IN ITS HYDROGEN FORM AND IN THE PRESENCE OF WATER.
Claim 2
Dependent Claim
81 words
THE PROCESS OF PREPARING N-HYDROXYALKYL AMINES WHICH COMPRISES REACTING BETWEEN 50* C. AND 150* C. A 1,2-ALKYLENE OXIDE OF NOT OVER FOUR CARBON ATOMS AND AN AMINE OF THE FORMULA RR''NH, WHEREIN R IS AN ALIPHATIC HYDROCARBON GROUP OF 8 TO 18 CARBON ATOMS AND R'' IS A MEMBER OF THE CLAS CONSISTING OF HYDROGEN AND THE METHYL GROUP, SAID REACTION BEING EFFECTED IN THE PRESENCE OF A SULFONATED CATION-EXCHANGE RESIN IN ITS HYDROGEN FORM AND IN THE PRESENCE OF WATER.
References Cited (Backward Citations)
US2541678A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |