Apparatus and process for high pressure polymerization of ethylene
申请人:ExxonMobil Chemical Patents Inc.
公开号:US10835882B2
公开(公告)日:2020-11-17
Disclosed are an apparatus and a process for polymerizing ethylene under high pressure providing more than one injection point for one initiator injection pump.
公开了一种在高压下聚合乙烯的设备和工艺,为一个引发剂注射泵提供一个以上的注射点。
Polyethylene films
申请人:ExxonMobil Chemical Patents Inc.
公开号:US10865281B2
公开(公告)日:2020-12-15
Films made from metallocene-catalyzed polyethylene polymers, optionally, with other polymers, are disclosed.
本发明公开了由茂金属催化聚乙烯聚合物(可选择与其他聚合物一起使用)制成的薄膜。
Rotomolded compositions, articles, and processes for making the same
申请人:ExxonMobil Chemical Patents Inc.
公开号:US10995203B2
公开(公告)日:2021-05-04
Rotomolded compositions and articles made therefrom using metallocene-catalyzed polyolefin polymers and at least one adhesion promoter are provided.
提供了使用茂金属催化聚烯烃聚合物和至少一种附着力促进剂的滚塑组合物及其制品。
Tubular polymerization reactors and polymers made therein
申请人:Donck C. Jan
公开号:US20050192414A1
公开(公告)日:2005-09-01
Tubular reactor apparatus and processes are provided for improved polymerization including using chain transfer agents and multiple monomer feeds spaced lengthwise along the tubular reactor providing high conversions of monomer into polymer. The invention also relates to polymers made from such a tubular reactor apparatus and processes including those polymers having a low haze value, a density over 0.92 g/cm
3
and/or having terminal carbonyl groups. The apparatus and methods uncouple or reduce the dependency between the monomer concentration and transfer agent concentration. The uncoupling in other embodiments may also be varied leading to multiple desirable effects.