sorona, Chinese Sorona, Sorona polymer is made from two main raw materials, 1,3-propanediol (PDO) and PTA (or DMT). Among them, PDO is the key raw material, accounting for 37% of the total raw materials. PDO can be made through a petrochemical process, and DuPont of the United States has successfully used corn sugar fermentation to efficiently produce PDO required for the production of Sorona, thus revolutionizing the chemical fiber field and injecting a new concept of environmental protection.

Glucose is obtained from corn, and under the action of genetically modified bacteria, it is fermented to produce PDO (1,3 propylene glycol), which is purified and dehydrated by distillation. At this time, pdo looks like a clear and slightly viscous liquid. Then add TPA (terephthalic acid), after the reaction, SORONA chip can be made SORONA fiber.