Stilbene-based materials, their preparation and use

US5563298A · kind A · utility

Assignee

• Consortium für elektrochemische Industrie GmbH · DE

Inventors

• Hans-Peter Weitzel · Reischach, DE
• Horst Leigeber · Oberhaching, DE
• Peter Boldt · Braunschweig, DE
• Jobst Leupold · Braunschweig, DE

Key dates

• Filing date: Feb 14, 1995
• Grant date: Oct 8, 1996
• Expiry date: Feb 14, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2602/08
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Materials of the formula I: ##STR1## in which R.sub.1, R.sub.2 and R.sub.3 in each case independently of one another can be identical or different and are a hydrogen atom, halogen atom, hydroxyl group, nitro group, cyano group or monovalent, optionally substituted organic radical; R.sub.4 is a hydrogen atom, halogen atom, nitro group, cyano group or monovalent, optionally substituted organic radical; and R.sub.5 can be identical or different and is a halogen atom, hydroxyl group, nitro group, cyano group or monovalent, optionally substituted organic radical.