| 摘要 |
PROBLEM TO BE SOLVED: To obtain a resin molding excellent in thin-wall rigidity, thin-wall impact resistance, especially, thin-wall weld strength, and excellent in the hydrolysis resistance of the weld under high-temperature high-humidity conditions by providing a weld comprising a polypropylene terephthalate resin. SOLUTION: The polypropylene terephthalate resin (PT resin) used is a thermoplastic polyester prepared from an acid component being terephthalic acid and a glycol component being 1,3-propylene glycol. It is desirable that 100 pts.wt. PT resin is mixed with 5-100 pts.wt. elastomer (e.g. olefinic elastomer) having a glass transition temperature of 20 deg.C or below, and the mean particle diameter of the disperse phase comprising the elastomer is 20μm or below. It is desirable that 0.01-5 pts.wt. epoxy compound (e.g. diepoxy compound) is added to 100 pts.wt. PT resin. It is desirable that 0.01-20 pts.wt. nucleator (e.g. talc) is used per 100 pts.wt. PT resin.
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