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发明授权
US08329821B2 Thermoplastic elastomer composition for foaming, molded foam thereof, composition molded product using the molded foam, and instrument panel for automobile 有权
用于发泡的热塑性弹性体组合物，其模塑泡沫，使用模制泡沫的组合物模制产品和用于汽车的仪表板

Thermoplastic elastomer composition for foaming, molded foam thereof, composition molded product using the molded foam, and instrument panel for automobile
摘要：
[Problem] To provide a thermoplastic elastomer composition for foaming, which has sufficient foamability and provides a molded article having good appearance. [Solution to Problem] A thermoplastic elastomer composition for foaming, which comprises 10 to 40% by weight of a partially or completely crosslinked ethylene/α-olefin/non-conjugated polyene copolymer rubber (A) comprising ethylene, an α-olefin of 3 to 20 carbon atoms and a non-conjugated polyene, 3 to 33% by weight of an ethylene/α-olefin copolymer (B) comprising ethylene and an α-olefin of 3 to 20 carbon atoms, 10 to 40% by weight of polypropylene (C) having a melting point, as determined by differential scanning calorimetry (DSC), of 40 to 170° C., 10 to 45% by weight of a softener (D) for rubbers, and at least one substance selected from an isotactic propylene-based polymer (E-a) in an amount of 1 to 30% by weight and a syndiotactic α-olefin-based copolymer (E-b) in an amount of 1 to 20% by weight, with the proviso that the total amount of the components (A), (B), (C), (D), (E-a) and (E-b) is 100% by weight.
摘要（中）：

[问题]提供一种发泡性的热塑性弹性体组合物，其具有足够的发泡性并提供具有良好外观的模塑制品。 [问题的解决方案]一种用于发泡的热塑性弹性体组合物，其包含10至40重量％的部分或完全交联的乙烯/α-烯烃/非共轭多烯共聚物橡胶（A），其包含乙烯，3链的α-烯烃 至20个碳原子和非共轭多烯，3-33重量％的乙烯和3-20个碳原子的α-烯烃的乙烯/α-烯烃共聚物（B），10-40重量％的聚丙烯 （C）通过差示扫描量热法（DSC）测定的熔点为40〜170℃，10〜45重量％的用于橡胶的软化剂（D），以及选自全同立构的至少一种物质 量为1〜30重量％的丙烯系聚合物（Ea）和1〜20重量％的间同立构α-烯烃系共聚物（Eb），前提条件是组分 （A），（B），（C），（D），（Ea）和（Eb）为100重量％。

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