Patent ID: 9175128
Filing Date: 2015-11-03
Classification: C08G,G02B,G02C

Abstract:
1. An infrared absorbing spectacle lens made of a resin composition comprising: a polyurethane resin composition obtained by addition polymerization of a prepolymer and an aromatic polyamine, wherein said prepolymer is a reaction product of a polyisocyanate and a polyhydroxy compound, wherein said resin composition contains an infrared absorbing dye that absorbs infrared rays having wavelengths over the entire range of 780 to 2500 nm which is added in such amount that the average transmission of infrared rays having wavelengths in the range of 780 to 2500 nm is not more than 30%, and wherein said infrared absorbing dye is selected from the group consisting of: (1) N,N,N′,N′-tetrakis(p-substituted phenyl)-p-phenylene diamines, benzenes, and their aluminum salts and diimmonium salts; and (2) Bis-(p-dialkylaminophenyl)[N,N-bis(p-dialkylaminophenyl)p-amino-phenyl]aminium salts.