| 摘要 |
PROBLEM TO BE SOLVED: To provide a chlorinated vinyl chloride-based resin composition which is suitable for obtaining reforming pipes having excellent heat resistance and also having excellent workability and is used for the reforming pipes, and to provide the reforming pipe using the chlorinated vinyl chloride-based resin composition. SOLUTION: This chlorinated vinyl chloride-based resin composition for the reforming pipes is characterized by containing a chlorinated vinyl chloride-based resin having a chlorine content of 58 to 71 wt. % as a main component and having a molded product flexural modulus of≥450 MPa at 75°C, a flexural modulus (E, 20°C)/(E, 75°C) ratio of >1 to <20 at 20°C and 75°C, a flexural modulus (E, 75°C)/(E, 105°C) ratio of≥2 at 75°C and 105°C, and a Vicat softening temperature (5 kg load) of≥80°C according to JIS K 7026. COPYRIGHT: (C)2004,JPO
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