A polyester resin composition for profile extrusion molding comprising an amorphous polyester, at least one component selected from the group consisting of a crystalline polyester and a nucleating agent, and optionally a reactive compound; a polyester resin composition for profile extrusion molding comprising a polyester resin, and a reactive compound having a weight average molecular weight of 200 to 500,000; and a profile shape comprising a resin having a reduced viscosity ratio of 1.01 to 3.00, a reduced viscosity ratio being a ratio of a reduced viscosity of a resin after molding to that of a resin before molding. They do not suffer from sagging in the molding process, they improve the shape accuracy at corners and edges of profile shapes from a die to a sizing step and also resistance to whitening on bending in transparent products, and can provide profile shapes having good solvent resistance and detergent resistance.
一种用于型材挤压成型的聚酯
树脂组合物,包括无定形聚酯、至少一种选自由结晶聚酯和成核剂组成的组的组分,以及可选的反应性化合物;一种用于型材挤压成型的聚酯
树脂组合物,包括聚酯
树脂和重量平均分子量为 200 至 500,000 的反应性化合物;以及一种型材形状,包括粘度降低率为 1.降低粘度比是指成型后
树脂的降低粘度与成型前
树脂的降低粘度之比。它们在成型过程中不会出现下垂现象,可提高异型材从模具到定型步骤的角和边缘的形状精度,还可防止透明产品在弯曲时发白,并可提供具有良好耐溶剂性和耐洗涤剂性的异型材。