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. 29, 2021
Filed:
Nov. 23, 2017
Method for preparing fluorine-silicon-containing polyphosphate ester and flame retardant epoxy resin
Xiamen University, Xiamen, CN;
Lizong Dai, Xiamen, CN;
Ting Chen, Xiamen, CN;
Cheng Liu, Xiamen, CN;
Shicheng Wang, Xiamen, CN;
Guorong Cehn, Xiamen, CN;
Conghui Yuan, Xiamen, CN;
Yiting Xu, Xiamen, CN;
Birong Zeng, Xiamen, CN;
Wei'ang Luo, Xiamen, CN;
Kaibin He, Xiamen, CN;
Xiamen University, Xiamen, CN;
Abstract
Disclosed are a fluorine-silicon-containing polyphosphate ester and method for preparation thereof, having a chemical structural formula of: wherein Ris Ris n=10˜100. The fluorine-silicon-containing polyphosphate ester of the present invention uses silicon phosphorus and fluorine for improving flame retardancy. Phosphorus catalyzes the system to form a phosphorus-rich carbon layer, performing a protective-layer function and thereby preventing further breakdown of the epoxy resin. The silicon-containing epoxy resin forms a silica-containing carbon layer during the process of combustion, strengthening the carbon-layer structure and further improving the protective function of the carbon-layer. The introduction of elemental fluorine improves the thermal stability of the epoxy resin, thereby improving the flame retardancy performance of the system.