UV curable photochromic composition and products formed by using the same
AssigneeLG Chem, Ltd.
InventorsJee-Seon Kim, Hye-Min Kim, Ja-Young Han
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Abstract
The present invention relates to a UV curable photochromic composition comprising a photochromic dye and an acrylate-based prepolymer having a polyol structure in which an acrylate-based functional group is introduced by using an iso-cyanate-based compound having two or more isocyanate functional groups as a linker, and to products formed by using the same.
Claims14
A UV curable photochromic composition comprising a photochromic dye and an acrylate-based prepolymer having a polyol structure in which an acrylate-based functional group is introduced by using an isocyanate-based compound having two or more isocyanate functional groups as a linker,
- wherein the acrylate-based prepolymer comprises a unit of the following Formula 1:
- wherein
- is a main chain of polyol,
- X is a main domain of a compound having two or more isocyanate groups,
- R1 is a direct bond or alkylene group, and
- R2 is hydrogen or alkyl group.
Dependencies are inferred from the claim text.