| 摘要 |
PROBLEM TO BE SOLVED: To provide a copolymer excellent in low hygroscopicity and transparency and having high mechanical strength and heat resistance. SOLUTION: The copolymer is composed of structural units each of the general formula(1)( wherein, R<SP>1</SP>is an alkyl or aryl ) and structural units each of the general formula(2)( wherein, R<SP>2</SP>is an alkyl, aryl, alkoxy or amino ). COPYRIGHT: (C)2007,JPO&INPIT
|
