| 摘要 |
PROBLEM TO BE SOLVED: To solve the problems of bleeding and compatibility with resins which the light stability of the conventional ultraviolet absorbers, antioxidants and the like have, and to provide a polymeric dye which exhibits excellent light stability for a long period of time. SOLUTION: The polymeric dye is obtained by allowing a block copolymer composed of (A) a random copolymer moiety of hydroxystyrene with a monomer to be represented by formula (1) and (B) a random copolymer moiety of at least one monomer to be selected from formulae (2) to (4) (wherein R<SP>11</SP>is a hydrogen atom or the like; R<SP>12</SP>is an oxyalkylene group or the like; m<SP>1</SP>is 0-1; R<SP>13</SP>is an alkyl group or the like; X<SP>1</SP>is an ester bond or the like; R<SP>21</SP>and R<SP>22</SP>are each a hydrogen atom or the like; R<SP>23</SP>is an alkylene group; R<SP>24</SP>is an alkylene group or the like, m<SP>21</SP>and m<SP>22</SP>are each 0-1, R<SP>25</SP>is an alkyl group or the like; and X<SP>2</SP>is an ester group or the like) with styrene to form a hydrogen bond with a compound having at least two functional groups capable of forming a hydrogen bond in the molecule. COPYRIGHT: (C)2004,JPO
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