ORGANIC PHOTOCHROMIC MATERIALS WITH HIGH REFRACTIVE INDEX, THEIR PREPARATION AND ARTICLES FORMED FROM THESE MATERIALS
摘要
The invention relates to organic photochromic materials consisting of a polymer matrix of optical quality and of at least one dye that imparts photochromic properties to the matrix, the dye being selected from spirooxazines, spiropyrans and chromenes. The polymer constituting the matrix is a copolymer of 30-95 wt.% ethoxylated bisphenol A dimethacrylate and 5-70 wt.% of a polyurethane oligomer having terminal di- or triacrylic or di- or trimethacrylic functionality. Such photochromic materials are most suitable for the production of ophthalmic and sun protection lenses.
申请公布号
WO9619741(A1)
申请公布日期
1996.06.27
申请号
WO1995US14585
申请日期
1995.11.09
申请人
CORNING INCORPORATED;CHAN, YOU-PING;HENRY, DAVID;MEYRUEIX, REMY;VIAL, JACQUES, JEAN
发明人
CHAN, YOU-PING;HENRY, DAVID;MEYRUEIX, REMY;VIAL, JACQUES, JEAN