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:
Jul. 01, 2025
Filed:
Feb. 04, 2021
Jiangsu Liside New Material Co., Ltd., Taizhou, CN;
Zhejiang University, Hangzhou, CN;
Hua Lei, Hangzhou, CN;
Jinzhong Li, Taizhou, CN;
JIANGSU LISIDE NEW MATERIAL CO., LTD., Taizhou, CN;
ZHEJIANG UNIVERSITY, Hangzhou, CN;
Abstract
The present disclosure provides an aluminum phosphite-based complex with dual-peak thermal gravity decomposition characteristics and a preparation method and use thereof. A structural formula of the complex is as follows: ((HPO)Al)·((HPO)Al), wherein x is 0.01-0.5 and represents a molar ratio of (HPO)Al to (HPO)Al. The dual-peak thermal gravity decomposition characteristics are as follows: a first gravity peak temperature is 460-490° C., and a second gravity peak temperature is 550-580° C. The preparation method includes: uniformly mixing aluminum phosphite and aluminum hydrogen phosphite according to the ratio in the structural formula, and then performing stepwise heating at a rate of 5° C./min to raise the temperature of a mixture from the normal temperature to no more than 350° C. within 1-10 hours, so as to obtain the aluminum phosphite-based complex with the dual-peak thermal gravity decomposition characteristics. The complex may serve as or is configured to prepare a flame retardant or a flame-retardant synergist.