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US2540938A Expired / Lapsed US ⏱️ 0.0 years remaining

N-substituted diamines and preparation of the same

Assignee: Shell Development Co
•
Filing: 1947-07-07
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Granted: 1951-02-06
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Expires: 1967-07-07
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Abstract

No abstract record available.

Inventors

  • 👤 Harry De V Finch
  • 👤 Seaver A Ballard

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 17:54
CPC Classifications
C; C07; C07C; C07C211/00; C07C211/01; C07C211/20; C07C211/22

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 133 words
A PROCESS FOR CONVERTING BY REPLACING AN N-SUBSTITUTED AMINO GROUP BY A DISSIMILAR NSUBSTITUTED AMINO GROUP N,N''-SUBSTITUTED 1ALKENE-1,3-DIAMINE DERIVATIVES TO OTHER N,N''SUBSTITUTED 1-ALKENE-1,3-DIAMINE DERIVATIVES WHICH COMPRISES HEATING IN LIQUID PHASE A MIXTURE COMPRISING AN N,N''-SUBSTITUTED 1-ALKENE-1,3DIAMINE DERIVATIVE AND AN ORGANIC AMINE OF THE CLASS CONSISTING OF THE PRIMARY AND THE SECONDARY ORGANIC AMINES HAVING DIRECTLY LINKED THROUGH THE NITROGEN ATOM TO AN ATOM OF HYDROGEN AN NSUBSTITUTED AMINO GROUP DISSIMILAR TO THE NSUBSTITUTED AMINO GROUPS OF SAID DIAMINE, THE HEATING BEING CONDUCTED AT A TEMPERATURE OF FROM ABOUT 40* C. TO ABOUT 200* C., SAID ORGANIC AMINE REACTANT BEING INITIALLY PRESENT IN MOLE EXCESS OVER SAID DIAMINE REACTANT, WHEREBY THERE IS PRODUCED AN N,N''-SUBSTITUTED 1,ALKENE-1,3DIAMINE DERIVATIVE WHEREIN AN AMINO GROUP IS THE SAME AS SAID N-SUBSTITUTED AMINO GROUP OF SAID ORGANIC AMINE REACTANT.
Claim 2
Dependent Claim 133 words
A PROCESS FOR CONVERTING BY REPLACING AN N-SUBSTITUTED AMINO GROUP BY A DISSIMILAR NSUBSTITUTED AMINO GROUP N,N''-SUBSTITUTED 1ALKENE-1,3-DIAMINE DERIVATIVES TO OTHER N,N''SUBSTITUTED 1-ALKENE-1,3-DIAMINE DERIVATIVES WHICH COMPRISES HEATING IN LIQUID PHASE A MIXTURE COMPRISING AN N,N''-SUBSTITUTED 1-ALKENE-1,3DIAMINE DERIVATIVE AND AN ORGANIC AMINE OF THE CLASS CONSISTING OF THE PRIMARY AND THE SECONDARY ORGANIC AMINES HAVING DIRECTLY LINKED THROUGH THE NITROGEN ATOM TO AN ATOM OF HYDROGEN AN NSUBSTITUTED AMINO GROUP DISSIMILAR TO THE NSUBSTITUTED AMINO GROUPS OF SAID DIAMINE, THE HEATING BEING CONDUCTED AT A TEMPERATURE OF FROM ABOUT 40* C. TO ABOUT 200* C., SAID ORGANIC AMINE REACTANT BEING INITIALLY PRESENT IN MOLE EXCESS OVER SAID DIAMINE REACTANT, WHEREBY THERE IS PRODUCED AN N,N''-SUBSTITUTED 1,ALKENE-1,3DIAMINE DERIVATIVE WHEREIN AN AMINO GROUP IS THE SAME AS SAID N-SUBSTITUTED AMINO GROUP OF SAID ORGANIC AMINE REACTANT.

References Cited (Backward Citations)

US2045574A Cited
US2145242A Cited
US2415020A Cited
US2374485A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1954-02-05 1954-08-07 1955-02-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1958-02-05 1958-08-07 1959-02-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1962-02-05 1962-08-07 1963-02-06 $7700.00 Window Closed / Lapsed

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