Mitsubishi Engineering-plastics Corporation

Hidetaka Ito

Hiroshi Nakano

A polycarbonate-based resin composition for extrusion molding using a siring die, and a molded product produced by extrusion-molding the resin composition using a sizing die, The polycarbonate-based resin composition comprises, as a main component, a polycarbonate having a viscosity-average molecular weight of 17000 to 27000 and containing main repeating units represented by the following formula (A): wherein an amount of proton (Pa) and an amount of proton (Pb) per 1 g of the polycarbonate which are calculated from respective integral values of a signal (a) detected at &#x3b4;=7.96 to 8.02 ppm and a signal (b) detected at &#x3b4;=8.11 to 8.17 ppm inH-NMR spectra thereof as measured in a deuterated chloroform solvent, satisfy the following formula (1):4&#x3c;{(Pa)+(Pb)}&#x3c;26 &#x2003;&#x2003;(1)wherein a unit of each of (Pa) and (Pb) is &#x3bc;mol/g. The above polycarbonate resin composition exhibits good mechanical properties and a good moldability.

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Hiratsuka, Japan

Hidetaka Ito