发明名称 |
ETHYLENE TYPE POLYMER COMPOSITION |
摘要 |
An ethylene type polymer composition comprising 20 to 90 % by weight of an ethylene type polymer (A) and 80 to 10 % by weight of an ethylene type polymer (B). The ethylene type polymer (A) is an ethylene polymer or a copolymer of ethylene and an .alpha.-olefin of 3 to 20 carbon atoms and has a density (d A) of 0.96 to 0.980 g/cm3 and an intrinsic viscosity (.eta.) of 0.5 to 3.0 dl/g. The ethylene type polymer (B) is an ethylene polymer or a copolymer of ethylene and an .alpha.-olefin of 3 to 20 carbon atoms and has a density (d B) of 0.91 to 0.965 g/cm3 and an intrinsic viscosity (.eta.) of 1.0 to 10 dl/g. At least one of the ethylene type polymers (A) and (B) is an ethylene type polymer prepared by the use of a metallocene catalyst. The ethylene type polymer composition has the properties: d A/d B is larger than 1; the density is 0.940 to 0.970 g/cm3; the MFR is of 0.005 to 20 g/10 min; the MFR and the melt tension (MT) satisfy the relation log(MT).gtoreq.-0.41og(MFR)+0.7; and the diametrical swell ratio exceeds 1.35. From this composition, molded articles having excellent mechanical strength and rigidity can be obtained.
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申请公布号 |
CA2200741(C) |
申请公布日期 |
2003.01.14 |
申请号 |
CA19962200741 |
申请日期 |
1996.07.24 |
申请人 |
MITSUI PETROCHEMICAL INDUSTRIES LTD. |
发明人 |
WATANABE, KEIJI;KISHINE, MASAHIRO;YANO, KATSUNORI;TSUTSUI, TOSHIYUKI |
分类号 |
C08F4/64;C08F110/02;C08F210/16;C08L23/06;C08L23/08;(IPC1-7):C08L23/04;C08F4/62 |
主分类号 |
C08F4/64 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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