PHOTOCHROMIC POLYURETHANE FILM OF IMPROVED FATIGUE RESISTANCE
摘要
A photochromic polyurethane film of improved light fatigue resistance is disclosed. A stabilizer system combining two hindered amine light stabilizers and one phenolic antioxidant is incorporated in the photochromic polyurethane film in an amount so that the film will have more than 40% of light fatigue improvement and less than 6 units in Deltab* of CIELAB system after a given light fatigue test. The film can be conveniently laminated between two transparent plastic sheets and incorporated into a plastic article.
申请公布号
WO2004068217(A2)
申请公布日期
2004.08.12
申请号
WO2004US01939
申请日期
2004.01.26
申请人
VISION-EASE LENS, INC.;MORAVEC, THOMAS, J.;BOULINEAU, MICHAEL, S.