| 摘要 |
PROBLEM TO BE SOLVED: To provide a sheathed wire using a vinyl chloride based polymer composition suitable for the use of thermal stable electric wire excellent in thermal aging resistance, oil resistance and other properties such as wear resistance, cold resistance, and an adequate hardness those are suitable for electric wire use. SOLUTION: The vinyl chloride based resin composition used for the sheath material of the sheathed wire comprises (a) a vinyl chloride based resin of 100 weight parts, (b) a polyvalence carboxylate based plasticizer of 30 to 50 weight parts selected from a group consisting of a trimellitic acid ester or a poyl mellitic acid ester obtained using a saturated fat group alcohol of 4 to 12 carbons with linear chain ratio of 50 to 100% as a raw material, (c) a polyester based plasticizer of 3 to 20 weight parts with a viscosity of not less than 1000cps at 25°C, (d) basic lead silicate of 0.1 to 20 weight parts, and (e) a metallic soap of 0.1 to 10 weight parts. The sum total amount of the plasticizer is 35 to 60 weight parts, the ratio of the trimellitic acid ester in the all of plasticizers is not larger than 0.3 and the ratio of the polyester based plasitcizer in the all of plasticizers is not larger than 0.4 weight parts. COPYRIGHT: (C)2004,JPO
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