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    Method for Producing Polypropylene
    3.
    发明申请
    Method for Producing Polypropylene 有权

    公开(公告)号：US20220119560A1

    公开(公告)日：2022-04-21

    申请号：US17500012

    申请日：2021-10-13

    申请人： SK Innovation Co., Ltd. ,  SK Geo Centric Co., Ltd.

    发明人： Hyo Seung Park ,  Hyeong Min Kim ,  Sung Jae Na ,  Ji Hae Park ,  So Young Shim

    IPC分类号： C08F110/06

    摘要： Provided is a method of producing polypropylene. More specifically, provided is a method of efficiently producing high-strength isotactic polypropylene having high crystallinity even with a shorter polymerization time. More specifically, provided is a method of producing polypropylene, including polymerizing propylene in the presence of a catalyst composition including a Ziegler-Natta catalyst, an external electron donor, dialkylaluminum hydride, and trialkylaluminum. The polypropylene has a xylene cold soluble content of 3 wt % or less.

    Method of Preparing Poly(Alkylene Carbonate) via Copolymerization of Carbon Dioxide/Epoxide in the Presence of Novel Complex
    7.
    发明申请
    Method of Preparing Poly(Alkylene Carbonate) via Copolymerization of Carbon Dioxide/Epoxide in the Presence of Novel Complex 有权
    在新型复合物存在下通过二氧化碳/环氧化物的共聚制备聚（碳酸亚烷基酯）的方法

    公开(公告)号：US20160304664A1

    公开(公告)日：2016-10-20

    申请号：US14777861

    申请日：2014-03-20

    申请人： SK Innovation Co., Ltd.

    发明人： Jong Chan Kim ,  Han Sol Lee ,  Hyo Seung Park ,  Kwang Kuk Lee ,  Jin Su Ham ,  Jong Ho Lim

    IPC分类号： C08G64/34 ,  C07F15/06 ,  C08G64/02

    CPC分类号： C08G64/34 ,  C07F11/00 ,  C07F15/00 ,  C07F15/065 ,  C08G64/0208

    摘要： Provided is a method of preparing poly(alkylene carbonate) using a molecular weight regulator in a process of preparing a copolymer of carbon dioxide/epoxide using a novel complex synthesized from salen-type ligand including a quaternary ammonium salt as a catalyst. According to the present invention, even though the molecular weight regulator is used, an activity of the catalyst may be stably maintained, whereby the low molecular weight of poly(alkylene carbonate) having a desirable level may be effectively provided. In addition, it is expected that since the novel complex as the catalyst of the present invention has a simple structure as compared to the existing copolymerization catalyst, due to the economical preparation cost thereof, the novel complex may be effectively applied to a large-scale commercial process.

    摘要翻译： 提供一种使用分子量调节剂在使用由包含季铵盐作为催化剂的salen型配体合成的新型络合物制备二氧化碳/环氧化物的共聚物的方法中制备聚（碳酸亚烷基酯）的方法。 根据本发明，即使使用分子量调节剂，可以稳定地维持催化剂的活性，由此可以有效地提供具有理想水平的聚（碳酸亚烷基酯）的低分子量。 此外，由于作为本发明的催化剂的新型络合物与现有的共聚催化剂相比具有简单的结构，由于其经济的制备成本，因此可以有效地将新型复合物大量应用于 商业流程。