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:
May. 12, 2026
Filed:
Dec. 29, 2020
Kingfa Sci. & Tech. Co., Ltd., Guangdong, CN;
Huan Chang, Guangdong, CN;
Nanbiao Ye, Guangdong, CN;
Cheng Li, Guangdong, CN;
Wohua Zhou, Guangdong, CN;
Xinxin Liu, Guangdong, CN;
Xiumei Zhu, Guangdong, CN;
Yujun Su, Guangdong, CN;
Lei Tang, Guangdong, CN;
Xianbo Huang, Guangdong, CN;
KINGFA SCI. & TECH. CO., LTD., Guangdong, CN;
Abstract
A recycling process for a polyamide waste material includes the following steps: adding a polyamide waste material into a mixed solvent to obtain a solution, heating the solution to 50° C. to a reflux temperature of the solution, conducting stirring for dissolution, and then conducting decolorization treatment and filtration to obtain a polyamide solution; and adding the polyamide solution into water, precipitating polyamide as a solid in deionized water, and conducting separation to obtain recycled polyamide. The mixed solvent includes, in parts by weight, 10-30 parts of phenol and 15-40 parts of toluene.