The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 05, 2017
Filed:
Oct. 30, 2013
China Petroleum & Chemical Corporation, Beijing, CN;
Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation, Beijing, CN;
Luqiang Yu, Beijing, CN;
Zhichao Yang, Beijing, CN;
Jiangbo Chen, Beijing, CN;
Jianxin Zhang, Beijing, CN;
Yafeng Du, Beijing, CN;
Qinyu Tong, Beijing, CN;
Kang Sun, Beijing, CN;
Yang Liu, Beijing, CN;
Jie Zou, Beijing, CN;
Lusheng Wang, Beijing, CN;
Zengyue Dai, Beijing, CN;
Zhong Tan, Beijing, CN;
Abstract
Disclosed herein is a polymerization method of propylene, which can prepare a propylene homopolymer with both high fluidity and high rigidity as well as a propylene/α-define copolymer having both high fluidity and a good rigidity-toughness balance by, for example, control of polymerization steps and elevation of polymerization temperature, while the catalyst still maintains a relatively high polymerization activity.