Kingfa Sci.&tech.co., Ltd.

Zhuhai Vanteque Specialty Engineering Plastics Co., Ltd.

Shanghai Kingfa Sci.&tech.dvpt.co., Ltd.

Zhuhai Wango Chemical Co., Ltd.

Jiangsu Kingfa Sci. & Tech. Advanced Materials Co., Ltd.

Chuanhui Zhang

Xianbo Huang

Xiangbin Zeng

Tongmin Cai

Changli Lu

Xueteng Dong

Kaijin Mai

Min Cao

Nanbiao Ye

Kun Yan

Sujun Jiang

Huan Chang

Mingqin Chen

Zhongquan Peng

Zhenguo Shi

Xueke Sun

Liming Fan

Chunping Ouyang

Mujun Huang

Mingchen Xie

Pingxu Chen

The invention discloses a flame-retardant semi-aromatic polyamide derived from the following monomers: a diacid monomer A: where A1 is terephthalic acid or terephthalic acid and other diacid, terephthalic acid accounts for 50 to 100 mol % of A1, and A2 is [(6-oxido-6H-dibenzo-(c,e)(1,2)-oxaphosphorin-6-ketone)-methyl]-butanedioic acid, A1+A2=100 mol %, A1=90 to 99 mol %, A2=1 to 10 mol %; and diamine monomer B: one or more of diamine monomers containing 4 to 36 carbon atoms. In the present invention, by an in situ polymerization, a specific flame-retardant monomer [(6-oxido-6H-dibenzo-(c,e)(1,2)-oxaphosphorin-6-ketone)-methyl]-butanedioic acid is copolymerized in a semi-aromatic polyamide chain segment, excellent mechanical properties and low water absorption can be obtained.

Flame-retardant semi-aromatic polyamide and preparation method thereof

A semiaromatic copolyamide resin and a polyamide molding composition consisting of the same are provided, consisting of following repeat units: (A) 26-80 mol % of units derived from para-amino benzoic acid; (B) 4-70 mol % of units derived from 11-aminoundecanoic acid or undecanolactam, and 0-70 mol % of units derived from another amino acids having 6 to 36 carbon atoms or units consisting of a lactam having 6-36 carbon atoms; (C) 0-37 mol % of units derived from a diamine unit having 4 to 36 carbon atoms; and (D) 0-37 mol % of units derived from a diacid unit having 6 to 36 carbon atoms; wherein, (A)+(B)+(C)+(D)=100 mol %; and molar contents of the units derived from para-amino benzoic acid and those derived from 11-aminoundecanoic acid or undecanolactam are not equal to 50 mol % simultaneously.

Semiaromatic copolyamide resin and polyamide molding composition consisting of the same

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Guangdong, China

Chuanhui Zhang