Thermoplastic resin and optical member including same
A thermoplastic resin composition comprising a thermoplastic resin (A) containing a unit represented by formula (1) and a thermoplastic resin (B) containing a unit represented by formula (2), wherein in the formula (1), L 1 and L 2 each independently represent a divalent linking group, k and l each independently represent an integer of 0 or more, R 1 , R 2 , R 3 , and R 4 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, and W represents a divalent linking group; and in the formula (2), L 3 and L 4 each independently represent a divalent linking group, m and n each independently represent an integer of 0 or more, and R 5 , R 6 , R 7 , and R 8 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms.
1 . A thermoplastic resin composition comprising a thermoplastic resin (A) containing a unit represented by formula (1) and a thermoplastic resin (B) containing a unit represented by formula (2),
wherein in the formula (1), L 1 and L 2 each independently represent a divalent linking group, k and 1 each independently represent an integer of 0 or more, R 1 , R 2 , R 3 , and R 4 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, and W represents a divalent linking group, and
wherein in the formula (2), L 3 and L 4 each independently represent a divalent linking group, m and n each independently represent an integer of 0 or more, and R 5 , R 6 , R 7 , and R 8 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms,
wherein W in the formula (1) includes formula (3) or (4),
wherein in the formula (3), L 5 and L 6 each independently represent a divalent linking group, o and p each independently represent an integer of 0 or more, and R 9 , R 10 , R 11 , and R 12 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, and
wherein in the formula (4), rings Z are a naphthalene ring, L 7 and L 8 each independently represent a divalent linking group, q and r each independently represent an integer of 0 or more, and R 13 , R 14 , R 15 , and R 16 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, and
the thermoplastic resin composition has an unnotched Charpy impact strength of 25 J/m 2 or more.
2 . The thermoplastic resin composition according to claim 1 , having a haze of 0.5% or less when measured at a thickness of 3 mm.
3 . The thermoplastic resin composition according to claim 1 , wherein a mass ratio (A:B) of the thermoplastic resin (A) and the thermoplastic resin (B) is 1:99 to 99:1.
4 . The thermoplastic resin composition according to claim 1 , having a refractive index of 1.645 to 1.690.
5 . The thermoplastic resin composition according to claim 1 , having an orientation birefringence of 4.5×10 −3 or less.
6 . The thermoplastic resin composition according to claim 1 , wherein the thermoplastic resin (A) is a polyester carbonate resin.
7 . The thermoplastic resin composition according to claim 1 , wherein the thermoplastic resin (B) is a polyester carbonate resin or a polycarbonate resin.
8 . An optical member comprising the thermoplastic resin composition according to claim 1 .