Patent · US Active

Cyanated naphthalenebenzimidazole compounds

US9790423B2 · kind B2 · utility

4Cited by

3References

17Claims

0Family size

Inventors

Martin Konemann · Mannheim, DE
Gabriele Mattern · Schifferstadt, DE
Gerhard Wagenblast · Wachenheim, DE
Sorin Ivanovici · Ludwigshafen, DE
Robert Send · Karlsruhe, DE

Key dates

Filing date	Aug 4, 2014
Grant date	Oct 17, 2017
Priority date	—
Expiry date	Aug 4, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P70/50
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to cyanated naphthalenebenzimidazole compounds of the formula (I) and mixtures thereof, in which R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 are each independently hydrogen, cyano or aryl which is unsubstituted or has one or more identical or different substituents RAr, where RAr is as defined in the claims and in the description, with the proviso that the compounds of the formula I comprise at least one cyano group. The invention further relates to color converters comprising at least one polymer as a matrix material and at least one cyanated naphthalenebenzimidazole compound or mixtures thereof as a fluorescent dye, to the use of the color converters and to lighting devices comprising at least one LED and at least one color converter.

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