LOW PRESSURE PROCESS FOR PREPARING LOW-DENSITY POLYETHYLENE
    8.
    发明申请
    LOW PRESSURE PROCESS FOR PREPARING LOW-DENSITY POLYETHYLENE 审中-公开
    低压法制备低密度聚乙烯

    公开(公告)号:WO2017201304A1

    公开(公告)日:2017-11-23

    申请号:PCT/US2017/033356

    申请日:2017-05-18

    IPC分类号: C08F110/02 C08F4/70 C08F4/02

    摘要: Disclosed are catalyst systems, processes for making the catalyst systems, and processes for polymerizing at least one olefin monomer comprising ethylene to form a low-density polyethylene (LDPE). The polymerization process uses a catalyst system that can include: at least one diimine complex having the formula I:, wherein M is Ni, Pd, or Pt; a first activator such as an organoaluminum compound; and a second activator including a solid oxide chemically-treated with an electron withdrawing anion, such as fluoride silica-alumina. It was discovered that such the complexes could be activated in a manner to provide an active catalyst system that polymerized ethylene to form a low-density polyethylene (LDPE).

    摘要翻译: 公开了催化剂体系,制备催化剂体系的方法以及使包含乙烯的至少一种烯烃单体聚合以形成低密度聚乙烯(LDPE)的方法。 该聚合方法使用催化剂体系,该体系可以包括:至少一种具有式I的二亚胺配合物,其中M是Ni,Pd或Pt; 第一活化剂如有机铝化合物; 以及包括用吸电子阴离子化学处理过的固体氧化物如氟化物二氧化硅 - 氧化铝的第二活化剂。 发现这样的配合物可以以提供活性催化剂体系的方式活化,所述催化剂体系聚合乙烯形成低密度聚乙烯(LDPE)。