Patent ID: 8013039
Filing Date: 2011-09-06
Classification: C08G,C08K

Abstract:
1. An encapsulant composition for a light-emitting diode, comprising: (a) about 100 parts by weight of at least one liquid bi-functional epoxy resin containing about 40˜50 weight % of aromatic ring; (b) about 55˜120 parts by weight of a curing agent comprising at least one bi-functional thiol curing agent containing aromatic ring and at least one aliphatic tetra-functional thiol curing agent, wherein the curing agent contains about 10˜50 weight % of aromatic ring and about 20˜35 weight % of sulfur and the aliphatic tetra-functional thiol curing agent comprises a pentaerythritol tetrakis (3-mercaptopropionate) (PTT-3MP); and (c) about 0.05˜0.5 parts by weight of a catalyst.