| 摘要 |
PROBLEM TO BE SOLVED: To provide a copolymerized polycarbonate exhibiting, while minimizing sacrifices of such polycarbonate properties as thermal deformation temperature, low chromaticity, high toughness, hydrolysis stability, glass transition point (Tg), etc., a Tg higher than that of a random copolycarbonate/phosphonate as well as excellent thermal deformation temperature and toughness.SOLUTION: The provided block copolycarbonate/phosphonate includes: at least one phosphonate oligomer or polyphosphonate block; and one or more polyester and/or polycarbonate blocks covalently bonded with at least one of the polyphosphonate blocks. |
