MOLDED PRODUCT HAVING EFFECTIVE THICKNESS OF 1 MM OR MORE AND CONTAINING ALIPHATIC POLYESTER RESIN, AND DOWNHOLE TOOL MEMBER FOR HYDROCARBON RESOURCE RECOVERY

摘要

Provided are a molded product having an effective thickness of 1 mm or more,the moldedproduct being formed from an aliphatic polyester resin composition containingfrom 1 to 30parts by mass of a carboxylic acid anhydride and preferably further containingfrom 1 to 50parts by mass of at least one type of a short fiber reinforcing material, athermoplasticelastomer, or an acrylic rubber core-shell polymer per 100 parts by mass of analiphaticpolyester resin containing not less than 50 mass% of a polyglycolic acidresin, the effectivethickness being 1 mm or more; a downhole tool for hydrocarbon resourcerecovery formedfrom the molded product having an effective thickness of 1 mm or more; analiphaticpolyester resin composition for the down hole tool member for hydrocarbonresourcerecovery; and a well drilling method.