Polyolefin composition and molded article thereof
    1.
    发明授权
    Polyolefin composition and molded article thereof 失效
    聚烯烃组合物及其成型体

    公开(公告)号:US5910539A

    公开(公告)日:1999-06-08

    申请号:US836291

    申请日:1997-05-06

    摘要: The polyolefin composition of the present invention comprises 45 to 90 parts by weight of a propylene polymer (A) of 0.5 to 10 dl/g in �.eta.! and at least 100.degree. C. in Tm comprising 100 to 80 mol % of propylene units, 0 to 10 mol % of ethylene units and 0 to 15 mol % of units derived from an .alpha.-olefin having 4 to 12 carbon atoms; 5 to 40 parts by weight of an ethylene/.alpha.-olefin copolymer (B) of 0.5 to 10 dl/g in �.eta.! comprising 70 to 95 mol % of ethylene units and 5 to 30 mol % of units derived from an .alpha.-olefin having 4 to 12 carbon atoms; and 2 to 25 parts by weight of a propylene/.alpha.-olefin/ethylene terpolymer (C) of 0.5 to 10 dl/g in �.eta.! comprising 40 to 77 mol % of propylene units, 20 to 40 mol % of units derived from an .alpha.-olefin having 4 to 12 carbon atoms and 2 to 20 mol % of ethylene units, provided that the total of components (A), (B) and (C) is 100 parts by weight. This polyolefin composition is excellent in flexibility, transparency, mechanical strength and heat resistance, and these properties are not seriously deteriorated even when the composition is exposed to high temperatures. The polyolefin composition can suitably be used for packaging articles, especially, medical blown bottles which are excellent in mechanical strength, flexibility and transparency and which are sterilized at high temperatures (e.g., 100.degree. C. or higher).

    摘要翻译: PCT No.PCT / JP96 / 02641 Sec。 371日期:1997年5月6日 102(e)日期1997年5月6日PCT提交1996年9月13日PCT公布。 出版物WO97 / 10299 日期1997年3月20日本发明的聚烯烃组合物包含45-90重量份丙烯聚合物(A),其η为0.5-10dl / g,Tm为至少100℃,包括100至80 丙烯单元的摩尔%,乙烯单元为0〜10摩尔%,碳原子数为4〜12的α-烯烃的单元为0〜15摩尔%。 5至40重量份的乙烯/α-烯烃共聚物(B)为0.5至10dl / g,包含70至95mol%的乙烯单元和5至30mol%的衍生自α- 具有4至12个碳原子的烯烃; 和2至25重量份的丙烯/α-烯烃/乙烯三元共聚物(C)为0.5至10dl / g,包含40至77mol%的丙烯单元,20至40mol%的衍生自 (A),(B)和(C)的总和为100重量份的α-烯烃,具有4至12个碳原子的α-烯烃和2至20摩尔%的乙烯单元。 该聚烯烃组合物的柔软性,透明性,机械强度和耐热性优异,即使组合物暴露在高温下,这些性能也不会严重劣化。 聚烯烃组合物可以适用于机械强度,柔软性,透明性优异且在高温(例如100℃以上)下灭菌的包装物,特别是医用吹瓶。

    Ethylene copolymer composition
    4.
    发明授权
    Ethylene copolymer composition 失效
    乙烯共聚物组成

    公开(公告)号:US5371146A

    公开(公告)日:1994-12-06

    申请号:US115661

    申请日:1993-09-03

    摘要: Disclosed is an ethylene copolymer composition having a density of 0.980 to 0.955 g/cm.sup.3 and a melt flow rate (MFR) of 0.1 to 100 g/10 min., which is formed from two kinds of ethylene/.alpha.-olefin copolymers having specific properties and having density and MFR different from each other. The ethylene copolymer composition of the invention is excellent in melt tension and flow index within the high-shear-region, and able to form films of high transparency, high mechanical strength and blocking resistance.

    摘要翻译: 公开了由具有特定性质的两种乙烯/α-烯烃共聚物形成的密度为0.980〜0.955g / cm 3,熔体流动速率(MFR)为0.1〜100g / 10分钟的乙烯共聚物组合物 并且具有彼此不同的密度和MFR。 本发明的乙烯共聚物组合物在高剪切区域内的熔体张力和流动指数优异,并且能够形成高透明度,高机械强度和抗粘连性的膜。