FIELD: chemistry.
SUBSTANCE: invention discloses photochromic compositions containing polymer material, a photochromic dye, hydroxyphenyltriazine UV radiation absorber and an optional light stabiliser selected from a group of sterically hindered amines.
EFFECT: disclosed photochromic systems provide a reversible photochromic effect with high light stability and colour stability of the dye.
11 cl, 3 ex
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