Cibt America Inc.

Cathay Biotech Inc.

Shanxi Synthetic Biology Institute Co., Ltd.

Yuanbo Zhao

Xiucai Liu

Bingbing Qin

The present invention provides a process for producing a high temperature resistant polyamide, the high temperature resistant polyamide and the use thereof. The process comprises: optionally concentrating a polyamide salt solution, and then conducting the following operations: heating and pressurizing to a pressure of P1, and maintaining the pressure, wherein the temperature of the system is T1 at the end of the pressure-maintenance; depressurizing to a pressure of P2, wherein the temperature of the system is T2 at the end of the depressurization; and evacuating, whereby a polyamide melt is obtained; wherein P1 is 0.8-4 MPa, T1 is 250-290° C., T1<T2 and (T2−T1)/(P1−P2)=5-75. The process for producing a high temperature resistant polyamide according to the present invention is simple to operate and reduces energy consumption. The obtained high temperature resistant polyamide may be used as a raw material for such injection molded parts, molded articles, or fibers as high temperature resistant attachments for machines, automobiles, household appliances, toys, textiles, sporting goods, mobile phones, computers, laptops, GPS devices, or optical devices.

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Shanghai, China

Yuanbo Zhao