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. 发明授权
    • Non-cryogenic process for grinding polyolefin drag reducing agents
    • 用于研磨聚烯烃减阻剂的非低温工艺
    • US06946500B2
    • 2005-09-20
    • US10322050
    • 2002-12-17
    • Jeffery R. HarrisJohn F. Motier
    • Jeffery R. HarrisJohn F. Motier
    • B29B13/10C08J3/12C08J3/11
    • C08J3/124B29B13/10
    • A process for producing fine particulate polymer drag reducing agent (DRA) without cryogenic temperatures, is described. The grinding or pulverizing of polymer, such as poly(alpha-olefin) may be achieved by the use of at least one solid organic grinding aid and at least one liquid grinding aid. In one non-limiting embodiment of the invention, the grinding is conducted at ambient temperature. Examples of a solid organic grinding aid include ethene/butene copolymer particles, paraffin waxes and solid alcohols. An example of a suitable liquid grinding aid includes a blend of glycol, water and isopropyl alcohol. Particulate DRA may be produced at a size of about 500 microns or less. Use of an attrition mill is preferred.
    • 描述了一种在没有低温的情况下生产细颗粒聚合物减阻剂(DRA)的方法。 聚合物如聚(α-烯烃)的研磨或粉碎可以通过使用至少一种固体有机研磨助剂和至少一种液体研磨助剂来实现。 在本发明的一个非限制性实施方案中,研磨在环境温度下进行。 固体有机研磨助剂的实例包括乙烯/丁烯共聚物颗粒,石蜡和固体醇。 合适的液体研磨助剂的实例包括二醇,水和异丙醇的共混物。 颗粒状DRA可以以约500微米或更小的尺寸生产。 优选使用研磨机。
    • 9. 发明授权
    • Continuous neat polymerization and ambient grinding methods of polyolefin drag reducing agents
    • 聚烯烃减阻剂的连续纯聚合和环境研磨方法
    • US06649670B1
    • 2003-11-18
    • US10321762
    • 2002-12-17
    • Jeffery R. HarrisJohn F. MotierMike CallawayGeorge G. Ramsay
    • Jeffery R. HarrisJohn F. MotierMike CallawayGeorge G. Ramsay
    • C08K501
    • C08F2/002C08K5/0025Y10T137/0391C08L23/08
    • A process for continuously producing a polymer drag reducing agent (DRA) is described. The process concerns mixing a monomer and a catalyst in at least one continuously stirred tank reactor (CSTR) to form a mixture. The mixture is continuously injected into a volume continuously formed by a thermoplastic material, such as polyethylene. The thermoplastic material is periodically sealed off to form a temporary container or bag. The monomer is permitted to polymerize in the temporary container to form polymer. In one non-limiting embodiment, the polymerization in the bag takes place within an inert, circulating fluid that accelerates heat transfer. The polymer and the temporary container are then ground together, preferably at non-cryogenic temperatures, to produce a particulate polymer drag reducing agent. In one preferred, non-limiting embodiment, the grinding or pulverizing occurs in the presence of at least one solid organic grinding aid. Finally, the particulate polymer drag reducing agent may be combined with a dispersing fluid.
    • 描述了连续生产聚合物减阻剂(DRA)的方法。 该方法涉及在至少一个连续搅拌釜式反应器(CSTR)中混合单体和催化剂以形成混合物。 将混合物连续地注入由热塑性材料如聚乙烯连续形成的体积中。 周期性地密封热塑性材料以形成临时容器或袋子。 允许单体在临时容器中聚合以形成聚合物。 在一个非限制性实施方案中,袋中的聚合在加速热传递的惰性循环流体中进行。 然后将聚合物和临时容器一起研磨,优选在非低温温度下,以产生颗粒状聚合物减阻剂。 在一个优选的非限制性实施方案中,研磨或粉碎发生在至少一种固体有机研磨助剂的存在下。 最后,颗粒状聚合物减阻剂可与分散液组合。