| 摘要 |
PROBLEM TO BE SOLVED: To provide a polymeric material maintaining the capacity of absorbing long-wavelength ultraviolet rays for a long time. SOLUTION: A compound represented by formula (1) is disclosed. [In the formula, Het<SP>1</SP>represent a monovalent 5 or 6 membered aromatic heterocyclic residue that may contain a substituent; X<SP>a</SP>and X<SP>b</SP>each independently represents a hetero atom and may have a substituent; Y<SP>a</SP>to Y<SP>c</SP>each independently represents a hetero atom and a carbon atom and may have a substituent; L<SP>1</SP>represents a divalent to octavalent linking group; n is an integer of 2 or greater; and m is a natural number of 0 or greater]. COPYRIGHT: (C)2009,JPO&INPIT
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