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    • 3. 发明授权
    • Long fiber-reinforced polypropylene resin composition and molded article
    • 长纤维增强聚丙烯树脂组合物和模塑制品
    • US06521693B2
    • 2003-02-18
    • US09794127
    • 2001-02-28
    • Koichi SaitoToshimori NakaiNobukazu AtsumiHitoshi Kuramochi
    • Koichi SaitoToshimori NakaiNobukazu AtsumiHitoshi Kuramochi
    • C08K340
    • C08L23/10C08J5/10C08J2323/12C08K3/22C08K7/14C08L23/12C08L23/142C08L51/06C08L53/00C08L2205/16C08L2666/24C08L2666/02
    • Provided is a long fiber-reinforced polypropylene resin composition which provides a molded article excellent in a mechanical strength and an impact resistance and having a small anisotropy in a strength, so that it can suitably be used even for uses in medium-sized to large-sized molded articles. The long fiber-reinforced polypropylene resin composition comprises 40 to 85% by weight of (A) a long fiber-reinforced propylene homopolymer pellet shown below and 15 to 60% by weight of (B) a propylene base block copolymer resin having the MFR of 50 g/10 min or less: (A): a long fiber-reinforced propylene homopolymer pellet comprising, (A1): 20 to 64.9% by weight of a modified propylene homopolymer obtained by modifying a propylene homopolymer with unsaturated carboxylic acid or an anhydride thereof or a mixture of the above modified propylene homopolymer and an unmodified propylene homopolymer, wherein an MFR is 60 g/10 min or more, (A2): 0.1 to 5% by weight of at least one selected from the group consisting of simple substances, hydroxides and oxides of alkaline earth metals, and (A3): 35 to 75% by weight of glass long fiber having a length of 2 to 50 mm.
    • 提供一种长纤维增强聚丙烯树脂组合物,其提供机械强度和耐冲击性优异并且强度各向异性小的成型体,从而适合用于中型至大型的, 大小的模制品。 长纤维增强聚丙烯树脂组合物包含40至85重量%的(A)下述长纤维增强丙烯均聚物颗粒和15至60重量%的(B)丙烯基嵌段共聚物树脂,其MFR为 50g / 10分钟以下:(A):长纤维强化丙烯均聚物粒料,其包含:(A1):通过用不饱和羧酸或酸酐改性丙烯均聚物得到的改性丙烯均聚物为20〜64.9重量% 或上述改性丙烯均聚物和未改性丙烯均聚物的混合物,其中MFR为60g / 10分钟以上,(A2):0.1〜5重量%的选自单体的至少一种 ,碱土金属的氢氧化物和氧化物,和(A3):35〜75重量%的长度为2〜50mm的玻璃长纤维。