Invention Grant
- Patent Title: Preparation of pyridine dyes
- Patent Title (中): 制备吡啶染料
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Application No.: US682626Application Date: 1996-07-30
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Publication No.: US5703238APublication Date: 1997-12-30
- Inventor: Ernst Schefczik , Sabine Gruttner-Merten , Peter Saling , Rudiger Sens , Helmut Reichelt
- Applicant: Ernst Schefczik , Sabine Gruttner-Merten , Peter Saling , Rudiger Sens , Helmut Reichelt
- Applicant Address: DEX Ludwigshafen
- Assignee: BASF Aktiengesellschaft
- Current Assignee: BASF Aktiengesellschaft
- Current Assignee Address: DEX Ludwigshafen
- Priority: DEX4402083.5 19940202
- Main IPC: C07D471/04
- IPC: C07D471/04 ; C09B55/00 ; C09B25/04
Abstract:
Methine or azamethine dyes are prepared on the basis of pyridine dyes by condensing an oxime- or formyl-pyridine or its tautomeric form with 5-membered aromatic heterocycles.
Public/Granted literature
- US5142387A Projection-type display device having light source means including a first and second concave mirrors Public/Granted day:1992-08-25
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