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:
Jan. 27, 2026
Filed:
Apr. 10, 2020
Kingfa Sci. & Tech. Co., Ltd., Guangdong, CN;
Huan Chang, Guangdong, CN;
Xianbo Huang, Guangdong, CN;
Nanbiao Ye, Guangdong, CN;
Min Cao, Guangdong, CN;
Chuanhui Zhang, Guangdong, CN;
Sujun Jiang, Guangdong, CN;
Mingchen Xie, Guangdong, CN;
Kun Yan, Guangdong, CN;
Zhongquan Peng, Guangdong, CN;
KINGFA SCI. & TECH. CO., LTD., Guangdong, CN;
Abstract
The invention discloses an in situ polymerized flame retardant, derived from the following monomers: a diacid monomer A: where A1 is terephthalic acid, A2 is a phosphorus aromatic ring-containing reactive flame-retardant diacid monomer, A1+A2=100 mol %, A1=50 to 90 mol %, A2=10 to 50 mol %; and a diamine monomer B: one or more of diamine monomers containing 4 to 36 carbon atoms. In the present invention, a novel flame retardant is obtained by in situ polymerization of the phosphorus aromatic ring-containing reactive flame-retardant diacid monomers in semi-aromatic polyamide oligomers, which has advantages of no precipitation in the semi-aromatic polyamide and no influence on other properties of the semi-aromatic polyamide and has an excellent flame-retardant property.