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
    • 3. 发明申请
    • Process For Producing Low Density Polyethylene Compositions and Polymers Produced Therefrom
    • 生产低密度聚乙烯组合物和聚合物的方法
    • US20080125553A1
    • 2008-05-29
    • US11666527
    • 2005-10-04
    • Christopher W. ConradDavid T. GillespieChristopher R. Eddy
    • Christopher W. ConradDavid T. GillespieChristopher R. Eddy
    • C08F10/02C08F2/02
    • C08F110/02C08F4/34C08F2/001C08F2500/12C08F2500/11C08F2500/04
    • The present invention relates to an ethylene homo or copolymer characterized as having long chain branching, and having a molecular weight distribution, Mw/Mn, and a GPC-LALLS CDF, which satisfies the following relationship: y≧0.0663x-0.015, wherein y=GPC-LALLS CDF and x=Mw/Mn measured by conventional GPC, a line drawn from where the LS chromatogram intersects with molecular weight 350,000 and molecular weight 1,150,000 has a positive slope, preferably with a melt index between 0.15 and 2000 g/10 minutes and having long chain branching. In addition, the invention relates to a free radical initiation polymerization process for the preparation of ethylene polymers or copolymers, comprising reacting ethylene and optionally one or more comonomers at a high pressure, conveniently between 13,000 psig and 100,000 psig, and at reactor temperatures of 115° C. to 400° C., preferably 125-400° C., more preferably 140-350° C., especially 165-320° C., in a reactor system comprising at least one tubular, and at least one autoclave reactor, wherein the monomer(s) feed into the reactors is divided into multiple monomer feed streams, and wherein at least one feed stream into the tubular reactor consists essentially of unreacted monomer.
    • 本发明涉及特征在于具有长支链,并具有分子量分布Mw / Mn和GPC-LALLS CDF的乙烯均聚物或共聚物,其满足以下关系:y> = 0.0663x-0.015,其中 y = GPC-LALLS CDF和x =通过常规GPC测量的Mw / Mn,从其中LS色谱图与分子量为350,000和分子量为1,150,000相交的线绘制的线具有正斜率,优选熔体指数在0.15和2000g / 10分钟,具有长链分支。 此外,本发明涉及用于制备乙烯聚合物或共聚物的自由基引发聚合方法,包括使乙烯和任选的一种或多种共聚单体在高压下,方便地在13000psig至100,000psig之间,反应器温度为115℃ 在包含至少一个管状和至少一个高压釜反应器的反应器系统中,在约400℃,优选125-400℃,更优选140-350℃,特别是165-320℃ ,其中进入反应器的单体被分成多个单体进料流,并且其中至少一个进入管式反应器的进料流基本上由未反应的单体组成。