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:
Oct. 10, 2017
Filed:
Dec. 20, 2012
China Petroleum & Chemical Corporation, Beijing, CN;
Beijing University of Chemical Technology, Beijing, CN;
Yixian Wu, Beijing, CN;
Wei Hua, Beijing, CN;
Han Zhu, Beijing, CN;
Liangxing Ma, Beijing, CN;
Yanqin Hao, Beijing, CN;
Ximing Zhao, Beijing, CN;
Guojun Zheng, Beijing, CN;
Changqing Duan, Beijing, CN;
Jun Qi, Beijing, CN;
Qijun Mu, Beijing, CN;
CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing, CN;
BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY, Beijing, CN;
Abstract
The present disclosure provides an additive and a method for terminating polymerization and/or reducing viscosity of polymer solution. The additive comprises a carboxylic acid, an alcohol, a salt chosen from alkali metal salts, alkaline earth metal salts, ammonium salts, and any combination thereof, and optionally, water. The method of the present disclosure comprises adding the additive according to present disclosure into a polymer solution and mixing the resulting mixture. The additive of the present disclosure can terminate living polymer chain ends efficiently and can destroy catalytic active centers and can substantially reduce the viscosity of a polymer solution.