09-06-2022 дата публикации
Номер: US20220177699A1
Принадлежит:
Provided is a film including a polycarbonate resin capable of achieving excellent drawdown resistance during thermoforming and excellent formability in processing a bent portion and the like thereof. The film contains a polycarbonate resin (a) which satisfies the following expression (i), when a viscosity at a shear rate of 6.080×10 [1/s] measured at 300° C. is X [Pa·s] and a viscosity at a shear rate of 6.080×10[1/s] measured at 300° C. is Y [Pa·s]. 2. The film according to claim 1 , wherein the polycarbonate resin has a viscosity average molecular weight of 1.0×10to 5.0×10.4. The film according to claim 1 , wherein the polycarbonate resin (a) includes two or more types of polycarbonate resins having different viscosity average molecular weights.5. The film according to claim 1 , wherein the polycarbonate resin (a) has a flow value (Q value) of 1.0 or more and 6.5 or less.7. The film according to claim 1 , wherein a total thickness thereof is 0.1 to 3.0 mm.8. A multilayered article having a layer comprising a thermoplastic resin (b) on at least one surface of the film according to .9. The multilayered article according to claim 8 , wherein when the polycarbonate resin (a) has a viscosity of X [Pa·s] at a shear rate of 6.080×10 [1/s] measured at 300° C. and a viscosity of X[Pa·s] at a shear rate of 1.216×10[1/s] measured at 300° C. claim 8 , and the thermoplastic resin (b) has a viscosity of Xat a shear rate of 6.080×10 [1/s] measured at 240° C. and a viscosity of Xat a shear rate of 1.216×10[1/s] measured at 240° C. claim 8 , the following expressions (X1) to (X6) are satisfied.{'br': None, 'i': 'X=C', 'sup': a', 'na, '×(6.080×10)\u2003\u2003(X1)'}{'br': None, 'i': X', '=C, 'sup': 1', 'a', '2', 'na, '×(1.216×10)\u2003\u2003(X2)'}{'br': None, 'i': X', '=C, 'sup': 3', 'b', 'nb, '×(6.080×10)\u2003\u2003(X3)'}{'br': None, 'i': X', '=C, 'sup': 4', 'b', '2', 'nb, '×(1.216×10)\u2003\u2003(X4)'}{'br': None, 'i': C', '−C, 'sup': a', 'b', '4, '0<||<3.2×10\u2003\u2003(X5)'}{' ...
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