RESIN COMPOSITION AND MOLDED BODY THEREOF

The present invention addresses the problem of providing: a resin composition having excellent hardness and spiral flow characteristics in a well-balanced manner; and a molded body formed from the resin composition. The resin composition according to the present invention contains: 50-94 parts by ma...

Full description

Saved in:
Bibliographic Details
Main Authors FURUTA Takanori, FUKUSHIMA Hiroyuki, KATO Takashi, ITAKURA Keita, AMANO Taiga
Format Patent
LanguageEnglish
French
Japanese
Published 11.01.2024
Subjects
Online AccessGet full text

Cover

Loading…
More Information
Summary:The present invention addresses the problem of providing: a resin composition having excellent hardness and spiral flow characteristics in a well-balanced manner; and a molded body formed from the resin composition. The resin composition according to the present invention contains: 50-94 parts by mass of a crystalline propylene/ethylene block copolymer (A) that satisfies specific requirements; 1-25 parts by mass of an ethylene polymer (B) having a density of 915-980 kg/m3 and a melt flow rate (190 °C, 2.16 kg load) of 0.1-30 g/10 min; and 5-25 parts by mass of an inorganic filler (C) (where the total amount of the crystalline propylene/ethylene block copolymer (A), the ethylene-based polymer (B), and the inorganic filler (C) is 100 parts by mass). La présente invention a pour but de procurer : une composition de résine présentant une excellente dureté et des caractéristiques d'écoulement en spirale bien équilibrées ; et un corps moulé constitué de la composition de résine. La composition de résine selon la présente invention contient : 50-94 parts by mass of a crystalline propylene/ethylene block copolymer (A) that satisfies specific requirements; 1-25 parts by mass of an ethylene polymer (B) having a density of 915-980 kg/m3 et un débit de fusion (190 °C, charge de 2,16 kg) compris entre 0,1 et 30 g/10 min ; et 5 à 25 parties en masse d'une charge inorganique (C) (la quantité totale du copolymère séquencé cristallin de propylène/éthylène (A), du polymère à base d'éthylène (B) et de la charge inorganique (C) étant de 100 parties en masse). 本発明の課題は、硬度およびスパイラルフロー特性にバランスよく優れる樹脂組成物、および該樹脂組成物から形成される成形体を提供することにある。 本発明の樹脂組成物は、特定要件を満たす結晶性プロピレン・エチレンブロック共重合体(A)50~94質量部と、密度が915~980kg/m3であり、メルトフローレート(190℃、2.16kg荷重)が0.1~30g/10minのエチレン系重合体(B)1~25質量部と、無機充填物(C)5~25質量部とを含む(ただし、結晶性プロピレン・エチレンブロック共重合体(A)、エチレン系重合体(B)、無機充填物(C)の合計を100質量部とする)。
Bibliography:Application Number: WO2023JP23764