| abstract |
The present invention relates to a white epoxy molding compound comprising (a) an epoxy resin; (b) a white pigment; (c) a release agent; (d) a curing agent; (e) a curing agent a catalyst; (f) a filler; and (g) a coupling agent, wherein the release agent is selected from the group consisting of polyolefin waxes, polyester waxes, polyolefin waxes, and polyester waxes. Mixture, brown wax, palm wax and mixtures thereof. The invention further comprises a process for the preparation of a white epoxy compound according to any of the preceding claims, which comprises the steps of: (1) kneading the components of all white epoxy molding compounds to form a kneaded product Or mixing all of the components of the white epoxy molding compound and extruding the mixture through an extruder; and (2) aging the kneaded or extruded product at 150 °C. Furthermore, the invention includes the use of a white epoxy molding compound of the invention as a reflector material for an LED device. |