| 摘要 |
A polyester or polyurethane polymer having a repeating unit represented by the following formula (1): wherein A is a polyol compound residue represented by the following formula (2) or formula (3): wherein R1 and R3 each individually represents an alkyl group having from 1 to 4 carbon atoms, and R2 and R4 each individually represents a hydrogen atom or a methyl group; and B is represented by the following formula (4) or formula (5): wherein X represents an alkylene, cycloalkylene, arylene or arylalkylene group having from 1 to 12 carbon atoms; wherein Y represents an alkylene, cycloalkylene, arylene or arylalkylene group having from 1 to 12 carbon atoms.
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