Cyclic olefin copolymer for medical instrument, cyclic olefin copolymer composition for medical instrument, and molded body

A cyclic olefin copolymer for a medical instrument having an aromatic ring, comprising:

• at least one structural unit (A) of the following (Ia), (II), and (III):
• in the formula (Ia), n is 0, 1 or 2;
• R1 to R14 are each independently a hydrogen atom, a halogen atom other than a fluorine atom, or a hydrocarbon group having 1 to 20 carbon atoms which may be substituted with a halogen atom other than a fluorine atom;
• at least one of R11 to R14 is a bond;
• and either (Ib) or (Ic) is independently bonded to one or a plurality of bonding species;
• in the formula (Ib), n is 0 to 20;
• q is 0, 1 or 2;
• R15 to R24 are each independently a hydrogen atom, a halogen atom other than a fluorine atom, or a hydrocarbon group having 1 to 20 carbon atoms which may be substituted with a halogen atom other than a fluorine atom;
• one of R17 to R24 is a bond, wherein when q=0, R17 and R18, R18 and R19, R19 and R20, R20 and R21, R21 and R22, and R22 and R17 may be bonded to each other to form a monocyclic ring or a polycyclic ring and when q=1 or 2, R17 and R18, R18 and R24, R24 and R24, R24 and R19, R19 and R20, R20 and R21, R21 and R22, R22 and R23, R23 and R23, and R23 and R17 may be bonded to each other to form a monocyclic ring or a polycyclic ring, and the monocyclic ring or the polycyclic ring may have a double bond, where the monocyclic ring or the polycyclic ring may be an aromatic ring;
• in the formula (Ic), n is 0 to 20;
• m and g are each independently 0 to 10;
• r is 1, 2 or 3;
• and R25 to R35 are each independently a hydrogen atom, a halogen atom other than a fluorine atom, or a hydrocarbon group having 1 to 20 carbon atoms which may be substituted with a halogen atom other than a fluorine atom, wherein when r=1, R32 and R33, R33 and R34, and R34 and R35 may be bonded to each other to form a monocyclic ring or a polycyclic ring and when r=2 or 3, R32 and R32, R32 and R33, R33 and R34, R34 and R35, and R35 and R35 may be bonded to each other to form a monocyclic ring or a polycyclic ring, and the monocyclic ring or the polycyclic ring may have a double bond, where the monocyclic ring or the polycyclic ring may be an aromatic ring;
• in the formula (II), n, m, and g are each independently 0, 1 or 2;
• r is 1, 2 or 3;
• and R36 to R55 are each independently a hydrogen atom, a halogen atom other than a fluorine atom, or a hydrocarbon group having 1 to 20 carbon atoms which may be substituted with a halogen atom other than a fluorine atom, wherein when r=1, R52 and R53, R53 and R54, and R54 and R55 may be bonded to each other to form a monocyclic ring or a polycyclic ring and when r=2 or 3, R52 and R53, R53 and R54, R54 and R55, and R55 and R55 may be bonded to each other to form a monocyclic ring or a polycyclic ring, where the monocyclic ring or the polycyclic ring may have a double bond, and the monocyclic ring or the polycyclic ring may be an aromatic ring, and R48 and R50 may be bonded to each other to form a monocyclic ring or a polycyclic ring, where the monocyclic ring or the polycyclic ring may have a double bond, and the monocyclic ring or the polycyclic ring may be an aromatic ring;
• and
• in the formula (III), n is 0, 1 or 2;
• m is 1, 2 or 3;
• and R55 to R68 are each independently a hydrogen atom, a halogen atom other than a fluorine atom, or a hydrocarbon group having 1 to 20 carbon atoms which may be substituted with a halogen atom other than a fluorine atom, wherein when m=1, R65 and R67, R67 and R68, and R68 and R66 may be bonded to each other to form a monocyclic ring or a polycyclic ring and when m=2 or 3, R65 and R65, R65 and R67, R67 and R68, R68 and R66, and R66 and R66 may be bonded to each other to form a monocyclic ring or a polycyclic ring, where the monocyclic ring or the polycyclic ring may have a double bond, and the monocyclic ring or the polycyclic ring may be an aromatic ring.