Location History:
- Jiangsu, CN (2017)
- Nanjing, CN (2016 - 2020)
Company Filing History:
Years Active: 2016-2020
Title: Na Cheng: Innovator in Cyclic Ester Purification and Lactide Synthesis
Introduction
Na Cheng is a prominent inventor based in Nanjing, China. He has made significant contributions to the field of chemical engineering, particularly in the purification of cyclic esters and the synthesis of optically pure lactides. With a total of 3 patents, Cheng's work showcases innovative methods that enhance the efficiency and safety of chemical processes.
Latest Patents
Cheng's latest patents include a method of purifying cyclic ester and a technological method for synthesizing optically pure L-/D-lactide catalyzed by biogenic guanidine. The purification method involves granulating a crude cyclic ester and mixing it with water at low temperatures, followed by a series of stirring and solid-liquid separation processes. This method results in a purified cyclic ester that is dried under specific conditions to ensure quality.
The synthesis method for L-/D-lactide utilizes biogenic guanidine creatinine as a catalyst, which is non-toxic and free of metals. This innovative approach simplifies the process of synthesizing high-purity lactides, making it more accessible for industrial applications. The specific rotations of the synthesized lactides indicate their high optical purity, which is crucial for various applications in the pharmaceutical and materials industries.
Career Highlights
Na Cheng is affiliated with Nanjing University, where he conducts research and develops his innovative methods. His work has garnered attention for its practical applications and contributions to sustainable chemistry. Cheng's dedication to advancing chemical processes has positioned him as a key figure in his field.
Collaborations
Cheng collaborates with notable colleagues, including Hong Li and Quanxing Zhang. Their combined expertise enhances the research and development efforts at Nanjing University, fostering an environment of innovation and discovery.
Conclusion
Na Cheng's contributions to the fields of cyclic ester purification and lactide synthesis exemplify the impact of innovative thinking in chemical engineering. His patents reflect a commitment to improving industrial processes while prioritizing safety and efficiency.