← Back to Patent Explorer
EP0480252A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Pyridone dyes and a method for their thermal transfer

Assignee: BASF SE
•
Filing: 1991-09-26
•
Granted: —
•
Expires: 2011-09-26
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Pyridone dyes of the formula …<IMAGE>… in which … …  Q<1> denotes hydrogen, fluorine, chlorine, methyl or a substituted amino radical, …  Q<2> denotes hydrogen, fluorine or chlorine or Q<1> and Q<2>, together with the carbon atoms to which they are linked, denote an aromatic carbocyclic or heterocyclic ring, …  X denotes a heterocyclic radical, a carboxylic acid ester or amide radical or a substituted amino radical and …  K denotes an aromatic radical, … and a method for their thermal transfer.

Inventors

  • 👤 Volker Dr. Bach
  • 👤 Ruediger Dr. Sens
  • 👤 Karl-Heinz Dr. Etzbach

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-01 22:48
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/385; B41M5/39; C; C09; C09B; C09B53/00

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

DE2117363A1 Cited
GB1591642A Cited
GB2209036A Cited

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag