| abstract |
The invention relates to a self-supporting polymer film having a thermoplastic polymer, a ketone, and at least one organic photochromic molecule including a chromophore, wherein preferably the at least one organic photochromic molecule including a chromophore is evenly distributed in the self-supporting polymer film. A typical self-supporting polymer film of the invention is a self-supporting photochromic aliphatic thermoplastic polyurethane film imbibed with a ketone such as acetone and cyclohexanone, further including one or more of a diarylethene, a spirooxazine and a naphtopyran, preferably a polydialkylsiloxane-substituted naphtopyran. The invention also relates to a method for the manufacturing of such a self-supporting polymer film of the invention, and to the use of such a self-supporting polymer film in the manufacturing of an article. Furthermore, the invention relates to an article having a self-supporting polymer film of the invention. |