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    • 2. 发明授权
    • Propylene resin composition and interior automotive member comprising the same
    • 丙烯树脂组合物和包含其的内部汽车构件
    • US06867252B1
    • 2005-03-15
    • US09674498
    • 2000-03-08
    • Ryuzo TomomatsuYouichi MatsuoNaoki NarukawaTetsushi YamadaTetsuya Oda
    • Ryuzo TomomatsuYouichi MatsuoNaoki NarukawaTetsushi YamadaTetsuya Oda
    • B60R21/045B60K37/00B60R13/02C08F210/06C08F297/08C08K3/34C08L21/00C08L23/10C08L23/14C08L23/16C08L53/00C08L53/02C08L3/34
    • C08L23/14C08F210/06C08F297/083C08K3/34C08L21/00C08L23/10C08L23/16C08L53/00C08L53/02C08L2308/00C08L2666/04C08L2666/02C08F210/16C08F2500/08C08F2500/12C08F2500/15C08F2500/17
    • A propylene-based resin composition has good external appearance due to good weld appearance and low gloss and has excellent mechanical properties such as impact resistance and stiffness. The composition is well-balanced in the external appearance and mechanical properties. Automotive interior trims made of the composition are also described. The propylene-based resin composition comprises (A) 60 to 90% by weight of a propylene-based resin (1) comprising 78 to 88% by weight of 23° C. p-xylene insolubles (a) and 12 to 22% by weight of 23° C. p-xylene solubles (b), (2) the insolubles (a) having an isotactic pentad fraction of 95% or higher, a relaxation time (τ) of 0.01 to 0.35 second at an angular frequency (ω) of 10°/sec when measured by melt viscoelastometry and a molecular weight distribution index (PDI) of 1 to 18 which is expressed by ω2/10ω1 wherein ω1 is an angular frequency at which a storage modulus (G′) as measured by melt viscoelastometry is 2×102 Pa and ω2 is an angular frequency at which a storage modulus (G′) as measured by melt viscoelastometry is 2×104 Pa, and (3) the solubles (b) having an intrinsic viscosity [η] (in decalin at 135° C.) of 3.3 dl/g or higher and an ethylene unit content of 43% by weight or smaller; (B) 0 to 10% by weight of a rubberlike elastomer; and (C) 10 to 30% by weight of tale. The automotive interior trims are produced by injection-molding the composition.
    • 丙烯类树脂组合物由于良好的焊接外观和低光泽而具有良好的外观,并且具有优异的机械性能如耐冲击性和刚度。 组合物在外观和机械性能方面均衡。 还描述了由组合物制成的汽车内饰。 丙烯类树脂组合物包含(A)60〜90重量%的丙烯系树脂(1),其含有78〜88重量%的23℃对二甲苯不溶物(a),12〜22重量% 重量为23℃的对二甲苯可溶物(b),(2)具有95%以上的全同立构五单元组分数的不溶物(a),在角频率下的弛豫时间(τ)为0.01〜0.35秒 )为10°/秒,通过熔融粘弹测量法测定,分子量分布指数(PDI)为1〜18,其由ωga2/ 10omega1表示,其中ω1为通过熔体测定的储能模量(G')的角频率 粘弹性测定法为2×10 2 Pa,ω2为通过熔体粘弹法测定的储能模量(G')为2×10 -4 Pa的角频率,(3)可溶物(b)的特性粘度η (在135℃的萘烷中)为3.3dl / g以上,乙烯单元含量为43重量%以下; (B)0〜10重量%的橡胶状弹性体; 和(C)10至30重量%的故事。 汽车内饰件是通过注塑成型制成的。