| 摘要 |
PROBLEM TO BE SOLVED: To provide a block copolymer having high transparency and useful in the optical field and a method for producing the same, and a film.SOLUTION: A block copolymer comprises units of formula (1) and formula (2) (Rand Rare H or methyl; Rand Rare a halogen atom, OH, alkyl, alkyl ester or the like; X is methylene, O or S; A-Aare a specific group or atom; p is an integer of 0-3; q is an integer of 0-4; r is 0 or 1; m is an integer of 0-3; n is 0 or a positive integer).SELECTED DRAWING: None |
