BIOMASS RESOURCE-DERIVED POLYESTER MADE INJECTION MOLDED BODY

摘要

PROBLEM TO BE SOLVED: To provide a biomass resource-derived polyester made injection molded body that greatly contributes to the resolution of problems such as environmental issues and depletion of fossil fuel resources, and that has practical physical properties.SOLUTION: Among the injection molded bodies obtained from polyester whose repeating unit is a dicarboxylic acid unit and a diol unit, a biomass resource-derived polyester made injection molded body is characterized in that at least one of dicarboxylic acid and diol which are the raw material of the polyester is derived from biomass resource and the amount of terminal carboxyl group in the polyester is 50 equivalent/ton or less, and the sulfur atom amount contained in the polyester is 0.0001 ppm or more and 10 ppm or less in mass ratio per the polyester.