Taihe New Materials obtained a patent for the preparation of bio-based polyamide fiber, which has intrinsic flame retardant properties

News on November 22, 2023, according to the announcement of the State Intellectual Property Office, Taihe New Materials Group Co., Ltd. has obtained a patent titled "A bio-based polyamide fiber and its preparation method", authorization announcement No. CN116815344B, application date is August 2023.

The patent abstract shows that the present invention relates to the technical field of bio-based polyamide fiber, specifically a bio-based polyamide fiber and its preparation method. The preparation method is: S1, under the protection of inert gas, p-phenylenediamine and heterocyclic ring Dissolve the diamine in a polar solvent, add furandicarboxyl chloride to perform a polymerization reaction, and adjust the pH to weak alkalinity to obtain a bio-based polyamide polymer solution; S2. Use a wet method to prepare the bio-based polyamide polymer solution. The spinning process is carried out to obtain bio-based polyamide fiber. The heterocyclic diamine is at least one of 2,3-diaminopyridine, 2,5-diaminopyridine or 2,6-diaminopyridine. The polar solvent is N,N-dimethylformamide, N,N-dimethylacetamide, N-methylpyrrolidone or dimethyl sulfoxide. The bio-based polyamide fiber has intrinsic flame retardant properties, high strength, and good post-dying properties.