Polypropylene with narrow molecular weight distribution range and processes for preparation thereof

US10301405B2 · kind B2 · utility

Assignees

• BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• CHINA PETROLEUM & CHEMICAL CORPORATION · CN

Inventors

• Liangshi Wang · Beijing, CN
• Luqiang Yu · Beijing, CN
• Shijun Zhang · Beijing, CN
• Jinliang Qiao · Beijing, CN
• Meifang Guo · Beijing, CN
• Zhichao Yang · Beijing, CN
• Jianjun Yin · Beijing, CN
• Honghong Huang · Beijing, CN
• Liping D. Hou · Torrance, US
• Jianfang SHENG · Beijing, CN

Key dates

• Filing date: Oct 30, 2013
• Grant date: May 28, 2019
• Expiry date: Dec 25, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L23/10
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Disclosed herein are a polypropylene with narrow molecular weight distribution and a process for preparing the same in a reactor using a Ziegler-Natta catalyst.