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:
Jun. 17, 2025
Filed:
May. 14, 2020
Chengdu 401 Technology Co., Ltd, Sichuan, CN;
Yang Li, Shanghai, CN;
CHENGDU 401 TECHNOLOGY CO., LTD., Sichuan, CN;
Abstract
An environment-friendly method for preparing polyamide resin, wherein the raw materials comprise by weight 5-60 parts of dibasic acid and 3-50 parts of diamine as polymeric monomers, and by weight 10-90 parts of polyamide of a reactive dispersion system; reactively dispersing the polymeric monomers into the polyamide dispersion system in molten state, and performing a polymerization reaction to obtain the polymer product. A salt formation process in water or ethanol does not occur during the entire process. The product is not affected by the temperature and pH value during the salt formation process, and has extremely stable quality. The problems of water consumption, energy consumption, time consumption, and unstable quality in traditional nylon salt production are solved.