PA 1311 was synthesized from petroleumfermentation undecanedioic acid and tridecanedioic amide.
用石油发酵法制备的十三碳二元胺和十一碳二元酸合成了尼龙1311。
2
It was formerly derived by fermentation of carbohydrates but is now made synthetically by aldol condensation of acetaldehyde or by oxidation of petroleum gases.
以前它是由碳水化合物发酵得到，现在由乙醛醛醇缩合或石油气体氧化的合成方法制得。
3
Technical features of petroleum microbial fermentation and its application in Dushanzi General Petro- chemical Works were introduced.