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New bis-2-azomethine pigments, process for their manufacture and their use

Assignee: Novartis Corp
•
Filing: 1973-06-13
•
Granted: 1975-04-01
•
Expires: 1993-06-13
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Abstract

Abstract Bis-azomethine pigments of the formula WHEREIN X denotes an aromatic radical on which the imino groups are in the o-position, Y denotes a hydroxyl, alkoxy, cycloalkoxy, aralkoxy or aryloxy, amino, alkylamino or arylamino group and Z denotes a H or halogen atom or an alkoxy, nitro or nitrile group, the radical X having to be free of nitro groups if Y denotes an arylamino group and Z denotes a H atom, as well as metal complexes of these bis-azomethines are useful for coloring plastics and lacquers in yellow to red shades of good fastness properties.

Inventors

  • 👤 Eplattenier Francois L
  • 👤 Andre Pugin
  • 👤 Laurent Vuitel

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 21:51
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0091; C09; C09B; C09B55/00; C09B55/005

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 6 words
A BIS-AZOMETHINE PIGMENT OF THE FORMULA
Claim 2
Dependent Claim 6 words
A BIS-AZOMETHINE PIGMENT OF THE FORMULA
Claim 3
Dependent Claim 10 words
A bis-azomethine pigment according to claim 1 wherein Y is
Claim 4
Dependent Claim 9 words
The compound according to claim 1 of the formula

References Cited (Backward Citations)

US2993065A Cited
US3398170A Cited
US3393178A Cited
US3457301A Cited
US3440254A Cited
US3441578A Cited
US3472876A Cited
US3687991A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-03-31 1978-09-30 1979-04-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-03-31 1982-09-30 1983-04-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-03-31 1986-09-30 1987-04-01 $7700.00 Window Closed / Lapsed

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