Patent · US Active

Colour-stable LED substrates

US8716374B2 · kind B2 · utility

0Cited by

43References

20Claims

0Family size

Assignee

Bayer MaterialScience AG · DE

Inventors

Gesa Dern · Mülheim an der Ruhr, DE
Alexander Meyer · Mülheim an der Ruhr, DE
Joerg Reichenauer · Krefeld, DE

Key dates

Filing date	Dec 15, 2011
Grant date	May 6, 2014
Priority date	—
Expiry date	Jan 30, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31678
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a composition comprising, (a) a transparent or translucent polymer or polymer blend in an amount which together with components b) to g) gives 100 wt. %, (b) optionally 0 ppm to 2500 ppm of one or more stabilizers, (c) 0.001 ppm to 10,000 ppm of at least one dye comprising structure 1a and/or 1b,(d) 0.001 ppm to 10,000 ppm of at least one dye selected from the group consisting of dyes differing from dyes having structure 1a and/or 1b based on perinone or indanthrone and dyes based on a phthalocyanine or phthalocyanine complex, (e) optionally 0 ppm to 3000 ppm of one or more release agents, (f) optionally 0 ppm to 6000 ppm of one or more UV absorbers, and (g) optionally 0 ppm to 500,000 ppm of one or more further additives.

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