Patent · US Expired

Epoxy-resin systems, which are resistant to aging, moulding materials, components produced therefrom and the use thereof

US7183661B2 · kind B2 · utility

21Cited by

7References

25Claims

0Family size

Assignee

OSRAM Opto Semiconductors GmbH · DE

Inventors

Georg Bogner · Lappersdorf, DE
Herbert Brunner · Sinzing, DE
Klaus Hoehn · Taufkirchen, DE

Key dates

Filing date	May 16, 2001
Grant date	Feb 27, 2007
Priority date	—
Expiry date	May 16, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31511
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Epoxy-resin systems resistant to aging, molded materials and components generated from them, and their utilization.An epoxy-resin system especially suitable in the application of casting-resin methods comprising an epoxide-containing A component based on a glycidyl ether or glycidyl ester and a B component containing anhydride as a hardener is proposed, where a sterically hindered amine is added to the A component as a stabilizer to prevent aging of molded materials. Light-emitting components potted with it exhibit increased aging stability, especially as with respect to light yield over time. The epoxy-resin system can also be used for encapsulants and molding compositions, and can be blended with acrylates, for all applications, particularly in the exterior.

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