公开(公告)号：US20160280812A1

公开(公告)日：2016-09-29

申请号：US15035649

申请日：2014-11-14

Applicant: W. R. GRACE & CO.-CONN

Inventor： John K Kaarto ,  Jan W. Van Egmond ,  Charles D. Lester

IPC: C08F10/06

CPC classification number: C08F10/06 ,  C08F2/34 ,  C08F2400/00 ,  C08F2500/03 ,  C08F2810/00 ,  C08F2810/10 ,  C08F110/06 ,  C08F4/6465 ,  C08F4/6494 ,  C08F2500/01 ,  C08F2500/12 ,  C08F2500/18

Abstract: The present disclosure provides a process for producing propylene-based polymer. The process includes contacting, under polymerization conditions in a gas phase polymerization reactor, propylene monomer and optionally one or more comonomers with a Ziegler-Natta catalyst composition. The process includes maintaining the temperature of a reaction zone of the reactor at a temperature from greater than 72° C. to less than or equal to 85° C., and forming a propylene-based polymer having a molecular weight (Mw) greater than 100,000, and a Mz+1/Mz less than 2.20. The resultant propylene-based polymer is advantageous in fiber applications.

Abstract translation: 本公开内容提供了一种生产基于丙烯的聚合物的方法。 该方法包括在气相聚合反应器中的聚合条件下使丙烯单体和任选的一种或多种共聚单体与齐格勒 - 纳塔催化剂组合物接触。 该方法包括将反应器的反应区的温度保持在大于72℃至小于或等于85℃的温度，并形成分子量（Mw）大于 100,000，Mz + 1 / Mz小于2.20。 得到的丙烯类聚合物在纤维应用中是有利的。

公开(公告)号：US09908952B2

公开(公告)日：2018-03-06

申请号：US15035649

申请日：2014-11-14

Applicant: W. R. Grace & Co.-Conn.

Inventor： John K Kaarto ,  Jan W. Van Egmond ,  Charles D. Lester

IPC: C08F10/06 ,  C08F2/34

CPC classification number: C08F10/06 ,  C08F2/34 ,  C08F2400/00 ,  C08F2500/03 ,  C08F2810/00 ,  C08F2810/10 ,  C08F110/06 ,  C08F4/6465 ,  C08F4/6494 ,  C08F2500/01 ,  C08F2500/12 ,  C08F2500/18

Abstract: The present disclosure provides a process for producing propylene-based polymer. The process includes contacting, under polymerization conditions in a gas phase polymerization reactor, propylene monomer and optionally one or more comonomers with a Ziegler-Natta catalyst composition. The process includes maintaining the temperature of a reaction zone of the reactor at a temperature from greater than 72° C. to less than or equal to 85° C., and forming a propylene-based polymer having a molecular weight (Mw) greater than 100,000, and a Mz+1/Mz less than 2.20. The resultant propylene-based polymer is advantageous in fiber applications.