公开(公告)号：US20020091191A1

公开(公告)日：2002-07-11

申请号：US09985287

申请日：2001-11-02

申请人： Chisso Corporation

发明人： Koichi Saito ,  Toshimori Nakai ,  Nobukazu Atsumi ,  Hideshi Ishiwa

IPC分类号： C08K003/40

CPC分类号： C08J5/10 ,  C08J2323/12 ,  C08K7/14 ,  C08L23/12 ,  C08L51/06 ,  C08L53/00 ,  C08L2205/08 ,  C08L2666/24

摘要： Provided are a long fiber-reinforced polypropylene resin composition and its moldings which have a high rigidity, impact resistance and durability, and especially have an extremely good repeated impact resistance and creep resistance, and are therefore suitable for various parts including automobile parts and other industrial parts. The long fiber-reinforced polypropylene resin composition comprises from 35 to 75% by weight of a matrix polymer and contains from 25 to 65% by weight of long glass fibers having a length of from 2 to 50 mm, in which the matrix polymer is a modified propylene homopolymer or a modified propylene-ethylene copolymer prepared by modifying a propylene homopolymer having an isotactic pentad fraction (P) of at least 96% and Mw/Mn (Q) of at most 6, or a crystalline propylene-ethylene copolymer composed of homopolymer segments having an isotactic pentad fraction (P) of at least 96% and Mw/Mn (Q) of at most 6 and propylene-ethylene copolymer segments, with an unsaturated carboxylic acid or its anhydride, or a mixture of the modified propylene homopolymer or propylene-ethylene copolymer and the non-modified propylene homopolymer or crystalline propylene-ethylene copolymer, and has a melt flow rate (230null C., 21.18 N) of at least 50 g/10 min. The resin composition is molded into moldings, optionally after diluted with a diluent of an ordinary propylene-based (co)polymer.

摘要翻译： 提供具有高刚性，耐冲击性和耐久性的长纤维增强聚丙烯树脂组合物及其模制品，特别是具有非常好的反复耐冲击性和抗蠕变性，因此适用于各种零件，包括汽车零件和其他工业 部分。 长纤维增强聚丙烯树脂组合物包含35至75重量％的基质聚合物，并且含有25至65重量％的长度为2-50毫米的长玻璃纤维，其中基质聚合物为 改性丙烯均聚物或通过改性具有至少96％的全同立构五单元组分（P）和至多6的Mw / Mn（Q）的丙烯均聚物或由以下组成的结晶丙烯 - 乙烯共聚物制成的改性丙烯 - 具有至少96％的全同立构五单元组分（P）和至多6的Mw / Mn（Q）和至少6个丙烯 - 乙烯共聚物链段的均聚物链段与不饱和羧酸或其酸酐或改性丙烯均聚物 或丙烯 - 乙烯共聚物和非改性丙烯均聚物或结晶丙烯 - 乙烯共聚物，并且具有至少50g / 10min的熔体流动速率（230℃，21.18N）。 将树脂组合物模制成模制品，任选地在用普通丙烯基（共）聚合物的稀释剂稀释后。