POLYACETAL RESIN COMPOSITION AND SULFUR FUEL CONTACT PROVIDED WITH MOLDED ARTICLE OF POLYACETAL RESIN COMPOSITION

• Main Authors: HOSOI YUHEI, TAMAOKA AKIHIRO, MONMA TOMOHIRO
• Format: Patent
• Language: Chinese; English
• Published: 17.11.2023
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The purpose of the present invention is to provide a polyacetal resin composition which, when made into a molded article, is capable of suppressing deterioration of a portion in contact with a high-sulfur fuel when irradiated with sunlight. The purpose of the present invention is achieved by a polyacetal resin composition in which: (A) 100 parts by mass of a polyacetal polymer; the present invention is characterized by containing at least 0.1-1.0 part by mass of (B) a hindered phenol antioxidant, 0.3-2.0 parts by mass of (C) at least one compound selected from the group consisting of oxides of magnesium and zinc, 0.5-3.0 parts by mass of (D) a polyalkylene glycol, 0.1-1.5 parts by mass of (E) a hindered amine compound, 0.2-1.5 parts by mass of (F) an ultraviolet absorber, and 0.01-1.0 part by mass of (G) a fatty acid ester of a polyol having an esterification rate of 80% or more. 本发明的目的在于，提供在制成成型品时能够抑制与高硫燃料接触的部位被太阳光照射时的劣化的聚缩醛树脂组合物。本发明的目的是通过聚缩醛树脂组合物而达成的，所述聚缩醛树脂组合物中，相对于(A)聚缩醛聚合物100质量份，至少含有：(B)受阻酚系抗氧化剂0.1～1.0质量份