Additives and methods for terminating polymerization and/or reducing viscosity of polymer solution

US9783654B2 · kind B2 · utility

Assignees

• CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• Beijing University of Chemical Technology · CN

Inventors

• Yixian Wu · Beijing, CN
• Wei Hua · Shanghai, CN
• Han Zhu · Nanhu, CN
• Liangxing Ma · Beijing, CN
• Yanqin Hao · Beijing, CN
• Ximing Zhao · Charlotte, US
• Guojun Zheng · Beijing, CN
• Changqing Duan · Beijing, CN
• Jun Qi · Cupertino, US
• Qijun Mu · Beijing, CN

Key dates

• Filing date: Dec 20, 2012
• Grant date: Oct 10, 2017
• Expiry date: Dec 21, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K3/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

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.