Photochromic plastic object

Details Photochromic plastic object Photochromic plastic object

2011-04-12

2011-04-12

Pyon, Harold Y (Department: 1761)

Compositions

Light transmission modifying compositions

Displaying color change

C351S163000, C264S001320

Reexamination Certificate

active

07922941

ABSTRACT:
A photochromic plastic object which is composed of a transparent polymeric synthetic resin material, into or onto which at least one substantially mesoporous inorganic host structure is introduced or applied containing one or more embedded organic photochromic dye molecules so as to form a photochromic nanocomposite material. In contrast to prior techniques of adding or applying the photochromic organic dyes to the monomer mixture or prepolymer of a transparent synthetic resin material in a molecular form, in the photochromic plastic article of the present invention color is generated by using the photochromic nanocomposite particles or photochromic nanocomposite structures.

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