| 摘要 |
A method for producing photochromic plastic materials is disclosed which is characterized by forming a transparent polymeric shape from a mixed polymer consisting of a polyester resin made by esterification of an unsaturated polybasic organic acid with a polyhydric alcohol, and a polar vinyl monomer, swelling a surface layer of the cured polymeric shape with a polar solvent, absorbing silver and halide ions into the swelled surface layer, and collapsing the swelled surface layer.
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