| 摘要 |
Provided is a film comprising a polymer, characterized in that the polymer (1) comprises polymer structural units containing a -N=C=N- structure and a -N=C(R)-NH- structure in the main chain (but does not contain an ester bond in the main chain, and R represents a polyester structure bound with a C atom at one end), and (2) comprises as the polymer structural units, a polymer constitutional unit (A) of which the number average molecular weight of the part excluding R is 1,000-4,000 and a polymer structural unit (B) of which the number average molecular weight of the part excluding R is 18,000 or more. This film has excellent hydrolysis resistance and a good surface condition. |
