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US2532277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1, 6 hexanediamine derivatives
Assignee: EIDP Inc
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Filing: 1948-05-21
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Granted: 1950-12-05
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Expires: 1968-05-21
Abstract
No abstract record available.
Inventors
- 👤 John E Castle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:18
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
173 words
A PROCESS FOR THE SIMULTANEOUS ADDITION OF A COMPOUND TO A DOUBLE BOND OF A 1,4-DICYANOBUTENE AND HYDROGENATION OF THE NITRILE GROUPS THEREOF TO AMINO GROUPS, WHICH COMPRISES PASSING CONTINUOUSLY UNDER ALKALINE CONDITIONS OVER A HYDROGENATION CATALYST SELECTED FROM THE GROUP CONSISTING OF COBALT AND NICKEL HYDROGENATION CATALYSTS AT A TEMPERATURE IN THE RANGE OF 50* TO 250*C. AND UNDER A PRESSURE IN EXCESS OF 400 LBS./SQ. IN. A MIXTURE OF A 1,4-DICYANOBUTENE, HYDROGEN AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF MONOHYDRIC ALCOHOLS OF NOT MORE THAN 18 CARBON ATOMS WHICH ARE ENTIRELY HYDROCARBON EXCEPT FOR THE HYDROXYL OXYGEN, MONOHYDRIC ETHER ALCOHOLS WHICH ARE ENTIRELY HYDROCARBON EXCEPT FOR THE ETHER AND HYDROXYL OXYGENS, AMMONIA, PRIMARY AND SECONDARY MONOAMINES OF NOT MORE THAN 18 CARBON ATOMS WHICH ARE ENTIRELY HYDROCARBON EXCEPT FOR THE AMINO NITROGEN, AND PRIMARY MONOAMINES OF NOT MORE THAN 18 CARBON ATOMS IN WHICH A LOWER ALKOXY LOWER ALKYL RADICAL IS ATTACHED TO THE AMINO NITROGEN AND WHICH ARE ENTIRELY HYDROCARBON EXCEPT FOR ETHER OXYGEN AND THE AMINO NITROGEN.
Claim 2
Dependent Claim
173 words
A PROCESS FOR THE SIMULTANEOUS ADDITION OF A COMPOUND TO A DOUBLE BOND OF A 1,4-DICYANOBUTENE AND HYDROGENATION OF THE NITRILE GROUPS THEREOF TO AMINO GROUPS, WHICH COMPRISES PASSING CONTINUOUSLY UNDER ALKALINE CONDITIONS OVER A HYDROGENATION CATALYST SELECTED FROM THE GROUP CONSISTING OF COBALT AND NICKEL HYDROGENATION CATALYSTS AT A TEMPERATURE IN THE RANGE OF 50* TO 250*C. AND UNDER A PRESSURE IN EXCESS OF 400 LBS./SQ. IN. A MIXTURE OF A 1,4-DICYANOBUTENE, HYDROGEN AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF MONOHYDRIC ALCOHOLS OF NOT MORE THAN 18 CARBON ATOMS WHICH ARE ENTIRELY HYDROCARBON EXCEPT FOR THE HYDROXYL OXYGEN, MONOHYDRIC ETHER ALCOHOLS WHICH ARE ENTIRELY HYDROCARBON EXCEPT FOR THE ETHER AND HYDROXYL OXYGENS, AMMONIA, PRIMARY AND SECONDARY MONOAMINES OF NOT MORE THAN 18 CARBON ATOMS WHICH ARE ENTIRELY HYDROCARBON EXCEPT FOR THE AMINO NITROGEN, AND PRIMARY MONOAMINES OF NOT MORE THAN 18 CARBON ATOMS IN WHICH A LOWER ALKOXY LOWER ALKYL RADICAL IS ATTACHED TO THE AMINO NITROGEN AND WHICH ARE ENTIRELY HYDROCARBON EXCEPT FOR ETHER OXYGEN AND THE AMINO NITROGEN.
Claim 3
Dependent Claim
4 words
THE CHEMICAL COMPOUND 1,3,6-HEXANETRIAMINE.
Claim 4
Dependent Claim
4 words
THE CHEMICAL COMPOUND 1,3,6-HEXANETRIAMINE.
References Cited (Backward Citations)
FR796001A
Cited
US2166151A
Cited
US2200282A
Cited
US2284525A
Cited
US2280792A
Cited
US2409061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |