ANTIOXIDANT-CONTAINING FOAMABLE RESIN PARTICLES, METHOD FOR PRODUCING SAME, FOAMABLE PARTICLES, AND FOAM-MOLDED body

Provided are antioxidant-containing foamable resin particles that are configured from composite resin particles including 100-400 parts by mass of a polystyrene resin per 100 parts by mass of a polypropylene resin, and a foaming agent and antioxidant included therein, the antioxidant-containing foam...

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Bibliographische Detailangaben
1. Verfasser: MORIMOTO SEIICHI
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:Provided are antioxidant-containing foamable resin particles that are configured from composite resin particles including 100-400 parts by mass of a polystyrene resin per 100 parts by mass of a polypropylene resin, and a foaming agent and antioxidant included therein, the antioxidant-containing foamable resin particles being configured such that the polypropylene resin is present in a greater amount on the surface of the composite resin particles and in a lesser amount in the center of the particles, and the antioxidant is contained at an amount of 150-1,500 ppm in the composite resin particles. 提供的是含有抗氧化剂的发泡性树脂颗粒,其由包含相对于100质量份的聚丙烯系树脂为100~400质量份的聚苯乙烯系树脂的复合树脂颗粒和包含在所述复合树脂颗粒中的发泡剂和抗氧化剂构成,构成所述含有抗氧化剂的发泡性树脂颗粒以使所述聚丙烯系树脂在所述复合树脂颗粒的表面上存在得多并且在所述颗粒的中心处存在得少,并且所述抗氧化剂以150~1,500ppm的量包含在所述复合树脂颗粒中。