| 摘要 |
PURPOSE: Provided is a polyethylene terephthalate resin composition which is substantially shortened in crystallization time, enhanced in moldability, and can be injection molded even in cold mold. CONSTITUTION: The polyethylene terephthalate resin composition comprises polyethylene terephthalate, 1-10 parts by weight of polyethylene terephthalate metal salt, 10-50 parts by weight of fibrous stiffening agent, 0.1-10 parts by weight of inorganic nucleating agent, 0.1-10 parts by weight of lubricant, 0.2-30 parts by weight of releasing agent, and 0.1-10 parts by weight of heat resistant agent, with respect to 100 parts by weight of the polyethylene terephthalate. The polyethylene terephthalate metal salt has a structure of general formula I or II. In the formulas, M represents monovalent or divalent metal, n represents an integer enabling a number average molecular weight of PET salt to be 5,000 to 13,000.
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