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    • 2. 发明申请
    • Ultra High Molecular Weight Ethylene Copolymer Powder
    • 超高分子量乙烯共聚物粉末
    • US20080071031A1
    • 2008-03-20
    • US11793378
    • 2005-12-28
    • Akio FujiwaraKoichi Hasebe
    • Akio FujiwaraKoichi Hasebe
    • C08F8/00
    • C08F210/18C08F10/00C08F210/16C08F4/6555C08F210/08C08F2500/01C08F2500/17C08F2500/08C08F2500/18C08F2500/25
    • The present invention relates to an ultrahigh-molecular-weight ethylene copolymer powder having an intrinsic viscosity (η) of 10 dl/g to 34 dl/g, obtainable by copolymerizing ethylene and at least one olefin selected from the group consisting of α-olefins having 3 to 20 carbon atoms, cyclic olefins having 3 to 20 carbon atoms, compounds represented by the formula CH2═CHR1 wherein R1 is an aryl group having 6 to 20 carbon atoms, and linear, branched or cyclic dienes having 4 to 20 carbon atoms, wherein (1) a molded article of the copolymer powder has a haze of from 30% to 80% and (2) the copolymer powder has a bulk density of from 0.35 g/cm3 to 0.60 g/cm3. According to the invention, there can be provided an ultrahigh-molecular-weight ethylene copolymer powder which is excellent in balance of abrasion properties, physical properties, and moldability and also excellent in transparency and flexibility as compared with conventional ultrahigh-molecular-weight polyethylene and which has a high bulk density.
    • 本发明涉及一种超高分子量乙烯共聚物粉末,其特性粘度(η)为10dl / g至34dl / g,可通过使乙烯和至少一种选自下组的烯烃共聚获得:α-烯烃 具有3至20个碳原子,具有3至20个碳原子的环烯烃,由式CH 2 -CHR 1表示的化合物,其中R 1, 是碳原子数6〜20的芳基和碳原子数4〜20的直链状,支链状或环状的二烯,其中,(1)共聚物粉末的成型体的雾度为30〜80%,(2) 共聚物粉末的堆积密度为0.35g / cm 3至0.60g / cm 3。 根据本发明,可以提供与常规超高分子量聚乙烯相比,其耐磨性,物理性能和成型性的平衡优异,透明性和柔软性优异的超高分子量乙烯共聚物粉末, 其堆积密度高。