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US2532277A Expired / Lapsed US ⏱️ 0.0 years remaining

1, 6 hexanediamine derivatives

Assignee: EIDP Inc
•
Filing: 1948-05-21
•
Granted: 1950-12-05
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Expires: 1968-05-21
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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

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