Patent · US Active

Conversion of perylene-3,4:9,10-tetracarboximides to a form suitable for use as fluorescent dyes

US7851628B2 · kind B2 · utility

0Cited by

1References

5Claims

0Family size

Assignee

BASF SE

Inventors

Peter Erk · Bischofswerda, DE
Simone Schaefer · Kleinfischlingen, DE
Arno Boehm · Mannheim, DE
Peter Blaschka · Ludwigshafen, DE
Harald Arms · Worms, DE
Willi Helfer · Friedelsheim, DE

Key dates

Filing date	Dec 30, 2008
Grant date	Dec 14, 2010
Priority date	—
Expiry date	Dec 30, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09B67/0025
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A process for converting perylene-3,4:9,10-tetracarboximides of the general formula Iin which R1 and R2 are each unbranched, branched or cyclic C1-C8-alkyl to a form suitable for use as fluorescent dyes, which comprises

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.