RESIN COMPOSITION FOR INJECTION MOLDING, INJECTION MOLDED FOAM ARTICLE, AND METHOD FOR PRODUCING INJECTION MOLDED FOAM ARTICLE
    34.
    发明公开
    RESIN COMPOSITION FOR INJECTION MOLDING, INJECTION MOLDED FOAM ARTICLE, AND METHOD FOR PRODUCING INJECTION MOLDED FOAM ARTICLE 审中-公开
    树脂组合物的注射程序,注射成型泡沫制品及其制造方法的喷雾发泡成形体

    公开(公告)号:EP2623560A1

    公开(公告)日:2013-08-07

    申请号:EP11829377.8

    申请日:2011-09-30

    Abstract: A resin composition for injection molding comprising (I) 70-90 wt. parts of a propylene polymer resin having a MFR of at least 30 g/10 min. but smaller than 200 g/10 min. as measured at 230°C according to ASTM D-1238, (II) 5-25 wt. parts of an ethylene-α-olefin copolymer having a melt strength (MS 160 ) of larger than 50 mN but not larger than 300 mN as measured at 160°C, and (III) 5-25 wt. parts of an olefin polymer resin having a density of at least 850 kg/m 3 but not larger than 930 kg/m 3 as measured according to JIS K6760, and a melt strength (MS 160 ) of smaller than 30 mN as measured at 160°C, wherein the sum of (I), (II) and (III) is 100 wt. parts. This resin composition gives an injection molded article exhibiting enhanced impact strength at a low temperature and having no or minimized flow marks on the surface thereof.

    Abstract translation: 包括用于注塑成型的树脂组合物(I)70-90重量%的具有至少30克/ 10分钟的MFR一个的丙烯聚合物树脂的部件。 但小于200克/ 10分钟。 如在230℃下测得的gemäß到ASTM D-1238,(II)5-25重量大于50名MN的具有熔体强度的乙烯±烯烃共聚物部分(MS 160),但不大于300 Mn作为 在160℃,和(III)5-25重量测量。具有至少850MPa千克/米3但密度的烯烃聚合物树脂的部件不大于930公斤/米3为根据JIS K6760,和一个 熔融的小于30个MN强度(MS 160),其在160℃下测得的,worin的(I)的总和,(II)和(III)总量为100重量份。 该树脂组合物得到的注塑制品在低温下表现出提高的冲击强度和在其表面上没有或最小化流痕物。

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