公开(公告)号：US07160972B2

公开(公告)日：2007-01-09

申请号：US10779177

申请日：2004-02-12

申请人： Nickelous David Young ,  David B. Stone, legal representative ,  Robert Vincent Thomaier ,  Keith Bryan Reichel

发明人： David Stevenson Stone, deceased

IPC分类号： C08G77/12

CPC分类号： G02B1/046 ,  G02B1/04 ,  G02B1/041 ,  C08L83/04

摘要： A thermally stable polysiloxane composition is a cross-linked product of a Part A composition, of a Part B composition and a catalyst, the Part A composition being a polysiloxane having 60 to 75 percent by weight phenyl groups, the Part B composition being a polysiloxane having 50 to 80 percent by weight phenyl groups. The composition has the properties of optical clarity as measured by 90% or greater transmission of light of 400 nm wavelength in a 1.0 centimeter path, a refractive index at 589 nm of 1.545 or greater and still has 90% or greater transmission of light of 400 nm wavelength in a 1.0 centimeter path after exposure to 150° C. for 6 hours. The composition is well suited for application as an optically transmissive cover or lens for light emitting diodes and for use in other optical and related devices.

摘要翻译： 热稳定的聚硅氧烷组合物是部分A组合物，部分B组合物和催化剂的交联产物，部分A组合物是具有60至75重量％苯基的聚硅氧烷，部分B组合物是聚硅氧烷 具有50至80重量％的苯基。 该组合物具有通过在1.0厘米路径中的波长为400nm的光的90％或更高透射率测量的光学透明度的性质，589nm的折射率为1.545或更大，并且仍具有90％或更高的透光率为400 nm波长在暴露于150℃6小时后的1.0厘米路径中。 该组合物非常适合用作发光二极管的光学透射盖或透镜并用于其它光学和相关装置。