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1. 发明申请

WO1997038050A1 THERMOPLASTIC RESIN COMPOSITION AND PRODUCTS OF INJECTION MOLDING THEREOF 审中-公开
标题翻译：热塑性树脂组合物及其注塑成型产品
公开(公告)号：WO1997038050A1
公开(公告)日：1997-10-16
申请号：PCT/JP1997001183
申请日：1997-04-07
申请人： SUMITOMO CHEMICAL COMPANY, LIMITED , TOYOTA JIDOSHA KABUSHIKI KAISHA , HIRAKAWA, Manabu , OHKAWA, Kenichi , DOI, Teruhiko , HISAYAMA, Tetsuya , MIYAKE, Yuichi , NISHIO, Takeyoshi
发明人： SUMITOMO CHEMICAL COMPANY, LIMITED , TOYOTA JIDOSHA KABUSHIKI KAISHA
IPC分类号： C08L23/10
CPC分类号： C08L53/02 , C08K3/30 , C08K3/34 , C08L23/0815 , C08L23/10 , C08L23/16 , C08L25/08 , C08L53/00 , C08L53/025 , C08L2666/04 , C08L2666/24
摘要： A thermoplastic resin composition which is composed mainly of a crystalline polypropylene and, with respect to the properties, can satisfy the impact strength and rigidity required of materials of automobile interior furnishings and, as compared with conventional ethylene-propylene copolymer rubber compositions, has a higher fluidity and a better balance between the impact strength and the rigidity and, with respect to injection moldability, has a short molding cycle and a good surface quality; and products of injection molding thereof, particularly for use as automobile interior furnishings. The composition comprises a particular crystalline polypropylene (A), at least one member selected among particular ethylene-butene-1 copolymer rubbers (B), particular ethylene-propylene copolymer rubbers (C) and particular rubbers (D) containing vinyl aromatic compounds, talc (E), and, if necessary, a fibrous magnesium oxysulfate (E) in particular proportions, and has a melt flow index (JIS K-6758, at 230 DEG C) of 25 to 35 g/10 min and a bending modulus of elasticity at 23 DEG C of not less than 20000 kg/cm . The crystalline polyproplene (A) is the following one (i or ii). i) A crystalline ethylene-propylene copolymer wherein a propylene homopolymer portion as a first segment has a Q value, which is the ratio of the weight-average molecular weight (Mw) to the number-average molecular weight (Mn) as measured by gel permeation chromatography (GPC), of 3 to 5, an isotactic pentad fraction of not less than 0.98 as determined by (C-NMR) spectrometry, and an intrinsic viscosity of 0.9 to 1.1 dl/g as measured in tetralin at 135 DEG C and an ethylene-propylene random copolymer portion as a second segment has an intrinsic viscosity of 4.5 to 5.5 dl/g as measured in tetralin at 135 DEG C and a wt.% ratio of ethylene to propylene of 25:75 to 35:65. ii) A mixture of the crystalline ethylene-propylene block copolymer (i) with a particular crystalline propylene homopolymer.
摘要翻译：主要由结晶聚丙烯组成的热塑性树脂组合物，并且对于这些性能，可以满足汽车内部家具材料所需的冲击强度和刚性，并且与传统的乙烯 - 丙烯共聚物橡胶组合物相比，具有更高的冲击强度和刚性之间的流动性和更好的平衡，并且在注射成型性方面具有短的成型周期和良好的表面质量; 以及其注塑产品，特别用作汽车内部装饰。该组合物包含特定的结晶聚丙烯（A），选自特定乙烯 - 丁烯-1共聚物橡胶（B），特定乙烯 - 丙烯共聚物橡胶（C）和含有乙烯基芳族化合物的特定橡胶（D）中的至少一种，滑石（E），如果需要，特别是比例的纤维状硫酸氧化镁（E），熔体流动指数（JIS K-6758，230℃）为25〜35g / 10min，弯曲模量 23℃的弹性不小于20000kg / cm 2。结晶聚丙烯（A）是下列（i或ii）。 i）结晶乙烯 - 丙烯共聚物，其中作为第一链段的丙烯均聚物部分具有Q值，其是通过凝胶测量的重均分子量（Mw）与数均分子量（Mn）的比率渗透色谱法（GPC）为3〜5，通过13 C（13 C-NMR）光谱法测定的全同立构五单元组分数不小于0.98，特性粘度为0.9〜1.1dl / g， DEGC和作为第二链段的乙烯 - 丙烯无规共聚物部分在135℃下在四氢化萘中测得的特性粘度为4.5至5.5dl / g，乙烯与丙烯的重量比为25:75至35:1。 65。 ii）结晶乙烯 - 丙烯嵌段共聚物（i）与特定结晶丙烯均聚物的混合物。

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