Photochromic polymer compositions and articles thereof
First Claim
1. A photochromic article comprising an at least partially cured polymerizable photochromic polymer composition comprising (1) a reaction product of:
- (a) at least one photochromic material having at least one group polymerizable via addition polymerization; and
(b) at least one material copolymerizable with said photochromic material (a); and
(2) a material co-polymerizable with said polymerizable photochromic polymer composition, such that the reaction product comprising the photochromic article provides a Fade Half Life in the Photochromic Polymer Performance Test reduced over that provided by a photochromic material free of polymerizable groups.
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Abstract
Described is a photochromic polymer composition including the reaction product of at least one polymerizable photochromic material and at least one other copolymerizable material having a glass transition temperature of less than 23° C. upon polymerization. The photochromic polymer composition is adapted to provide an increased Fade Half Life in the Photochromic Polymer Performance Test as compared to the same photochromic compound used in the reaction product, but free of polymerizable groups. Also described are photochromic articles including the photochromic polymer composition.
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Citations
21 Claims
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1. A photochromic article comprising an at least partially cured polymerizable photochromic polymer composition comprising (1) a reaction product of:
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(a) at least one photochromic material having at least one group polymerizable via addition polymerization; and
(b) at least one material copolymerizable with said photochromic material (a); and
(2) a material co-polymerizable with said polymerizable photochromic polymer composition, such that the reaction product comprising the photochromic article provides a Fade Half Life in the Photochromic Polymer Performance Test reduced over that provided by a photochromic material free of polymerizable groups. - View Dependent Claims (2, 3, 4)
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5. A photochromic article comprising an at least partially cured polymeric host material and a photochromic amount of at least one photochromic polymer composition comprising a reaction product of:
at least one photochromic material having at least one polymerizable group; and
at least one material copolymerizable with said photochromic material of (a);
said material being adapted to form a polymer upon polymerization having a glass transition temperature less than 23°
C.;
said reaction product being adapted to provide a reduced Fade Half Life in the Photochromic Polymer Performance Test than photochromic material (a) free of polymerizable groups.- View Dependent Claims (6, 7, 8, 9)
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10. A photochromic article comprising a substrate comprising an at least partial coating of an at least partially cured photochromic coating composition on at least one surface of said substrate, said photochromic coating composition comprising a photochromic amount of at least one photochromic polymer composition comprising a reaction product of:
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(a) at least one photochromic material having at least one polymerizable group; and
(b) at least one material copolymerizable with said photochromic material of (a);
said material being adapted to form a polymer upon polymerization having a glass transition temperature less than 23°
C.;
said reaction product being adapted to provide a reduced Fade Half Life in the Photochromic Polymer Performance Test than photochromic material (a) free of polymerizable groups. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A photochromic article comprising an at least partially cured polymeric host material comprising an at least partial coating of an at least partially cured photochromic coating composition on at least one surface of said at least partially cured polymeric host material, said photochromic coating composition comprising a photochromic amount of at least one photochromic polymer composition, said photochromic polymer composition comprising a reaction product of:
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(a) at least one photochromic material having at least one polymerizable group; and
(b) at least one material copolymerizable with said photochromic material of (a);
said material being adapted to form a polymer upon polymerization having a glass transition temperature less than 23°
C.;
said reaction product being adapted to provide a reduced Fade Half Life in the Photochromic Polymer Performance Test than photochromic material (a) free of polymerizable groups. - View Dependent Claims (20)
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21. A photochromic polymer composition comprising a reaction product of at least two polymerizable photochromic material and at least one other copolymerizable material, said reaction product having a glass transition temperature of less than 23°
- C. and being adapted to provide a reduced Fade Half Life in the Photochromic Polymer Performance Test as compared to the same photochromic material used in the reaction product, but free of polymerizable groups.
Specification