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:
Apr. 14, 2020
Filed:
Nov. 23, 2017
Preparation method of phosphaphenanthrene-structure reactive flame retardant and application thereof
Xiamen University, Xiamen, Fujian, CN;
Lizong Dai, Xiamen, CN;
Chao Liu, Xiamen, CN;
Guorong Cehn, Xiamen, CN;
Jiamei Huang, Xiamen, CN;
Yiting Xu, Xiamen, CN;
Birong Zeng, Xiamen, CN;
Wei'ang Luo, Xiamen, CN;
Cohghui Yuan, Xiamen, CN;
Kaibin He, Xiamen, CN;
Xinyu Liu, Xiamen, CN;
XIAMEN UNIVERSITY, Xiamen, Fujian, CN;
Abstract
Disclosed are a phosphaphenanthrene-structure reactive flame retardant and an application thereof. The preparation method comprises: enabling 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), p-hydroxy benzaldehyde (4-HBA), and 5-aminomethyl-1,3-diphenyl-1,3,5-diphosphonitryl heterocycles to react under a certain condition to obtain the reactive flame retardant with a benzene ring rigid structure containing polyhydroxy. Compared with an ordinary flame retardant, the phosphaphenanthrene-structure reactive flame retardant has the characteristics that polyfunctionality is achieved, the molecular structure is stable, the hydrolysis resistance is better, and less migration in epoxy resin, moreover, the flame retardant property of the epoxy resin can be remarkably improved.