会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 9. 发明授权
    • Ethylene polymer and fuel tank comprising the same
    • 乙烯聚合物和包含该乙烯聚合物的燃料箱
    • US5547722A
    • 1996-08-20
    • US414231
    • 1995-03-31
    • Yumito UeharaNobuo EnokidoKiyotoshi FujiokaNobuyuki ShimizuMotonori Ueda
    • Yumito UeharaNobuo EnokidoKiyotoshi FujiokaNobuyuki ShimizuMotonori Ueda
    • B32B27/08C08F10/02B65D88/12B32B27/32B32B27/34
    • B32B27/08C08F10/02Y10T428/1352Y10T428/1383Y10T428/31746Y10T428/31913Y10T428/31928
    • An ethylene homopolymer or copolymer comprising ethylene and not more than 10% by weight of an .alpha.-olefin having from 3 to 20 carbon atoms and a fuel tank obtained therefrom are disclosed, said ethylene homopolymer or copolymer having (1) an intrinsic viscosity [.eta.] of from 2 to 6 dl/g, (2) a density of from 0.945 to 0.970 g/cm.sup.3, (3) an R value of from 2.5 to 4, said R value being defined as a .sigma..sub.2 /.rho..sub.1 ratio, wherein .sigma..sub.1 and .sigma..sub.2 mean stress in elongation with a strain at 2 sec and 4 sec, respectively, under a flow at an elongational strain rate .epsilon. of 0.5 sec.sup.-1, and (4) a relationship between high-velocity impact strength (HRI-IZOD) measured at -30.degree. C. and a melt index under a load of 21.6 kg (HLMI) satisfying formula:HRI-IZOD.gtoreq.-log HLMI+1.15The ethylene polymer exhibits high melt tension and excellent molding properties such as uniform stretchability in blow molding to provide molded articles, such as a fuel tank, having excellent mechanical characteristics, such as high stiffness and high impact resistance, and excellent fire resistance.
    • 公开了包含乙烯和不超过10重量%的具有3至20个碳原子的α-烯烃的乙烯均聚物或共聚物和由其获得的燃料箱,所述乙烯均聚物或共聚物具有(1)特性粘度[η ]为2〜6dl / g,(2)密度为0.945〜0.970g / cm3,(3)R值为2.5〜4,所述R值定义为σ2 / rho 1比, 其中σ1和σ2分别表示在伸长应变速率+ E,点ε+ EE为0.5秒-1的流动下,在2秒和4秒时应变的伸长应力,以及(4) 在-30℃下测量的高速冲击强度(HRI-IZOD)和21.6kg负载下的熔体指数(HLMI)满足公式:HRI-IZOD> / = - log HLMI + 1.15乙烯聚合物显示高熔体 张力和优异的成型性能,例如吹塑成型中的均匀拉伸性,以提供具有优异机械性能的模制品,例如燃料箱 特性如高刚度,高耐冲击性,耐火性优良。