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. 13, 2022
Filed:
Jul. 12, 2018
Zhejiang Nhu Company Ltd., Zhejiang, CN;
Zhejiang University, Zhejiang, CN;
Zhejiang Nhu Special Materials Co., Ltd., Zhejiang, CN;
Woyuan Li, Zhejiang, CN;
Hong Yin, Zhejiang, CN;
Zhirong Chen, Zhejiang, CN;
Baishan Hu, Zhejiang, CN;
Guiyang Zhou, Zhejiang, CN;
Hangjun Deng, Zhejiang, CN;
Ming Lian, Zhejiang, CN;
Xiongwei Zhang, Zhejiang, CN;
Qichuan Li, Zhejiang, CN;
Jiang Zhao, Zhejiang, CN;
ZHEJIANG NHU CO., LTD., Shaoxing, CN;
ZHEJIANG UNIVERSITY, Zhejiang, CN;
ZHEJIANG NHU SPECIAL MATERIALS CO., LTD., Zheijang, CN;
Abstract
A preparation method of a polyphenylene sulfide resin, and a polyphenylene sulfide resin prepared by the method using a sulfur-containing compound, an alkaline substance and p-dichlorobenzene as raw materials, a fatty acid as a polycondensation aid to carry out a polycondensation reaction. After purification treatment, a primary polyphenylene sulfide is obtained, which then reacts with a terminal-group adjusting agent at a high temperature to generate the polyphenylene sulfide resin resulting in high yield and low cost. The prepared polyphenylene sulfide resin has high reactivity, high melting crystallization temperature and excellent thermal stability. The resulting polyphenylene sulfide resin can be directly used for extrusion and injection molding.