Location History:
- Dublin, CA (US) (1987)
- San Ramon, CA (US) (1988 - 1994)
Company Filing History:
Years Active: 1987-1994
Title: Michael A DesJardin: Innovator in Chemical Engineering
Introduction
Michael A DesJardin is a notable inventor based in San Ramon, CA (US). He has made significant contributions to the field of chemical engineering, particularly in the area of chlorination processes. With a total of 5 patents to his name, DesJardin has developed innovative methods that have practical applications in the production of insecticides and herbicides.
Latest Patents
Among his latest patents, DesJardin has focused on the selective gas phase chlorination of polychlorinated β-picolines to produce 2,3,5,6-Tetrachloropyridine and 2,3-dichloro-5-(trichloromethyl)pyridine. These compounds are synthesized by selectively chlorinating polychlorinated β-picolines in the vapor phase at temperatures ranging from about 250°C to 450°C, utilizing specific Lewis acid halide catalysts on an inorganic support. Notably, the gamma position on the pyridine ring is typically not chlorinated in either the starting material or the reaction products. These innovative compounds serve as useful intermediates in the production of insecticides and herbicides. Another significant patent involves the process for 4-chlorobenzotrichloride, which is prepared by chlorinating p-xylene in the vapor phase at temperatures above 200°C in the presence of an activated carbon catalyst and water, achieving an approximately 75 percent calculated yield at 250°C.
Career Highlights
DesJardin has had a distinguished career, working with prominent companies such as The Dow Chemical Company and Dowelanco. His work has been instrumental in advancing chemical processes that are both efficient and environmentally friendly.
Collaborations
Throughout his career, DesJardin has collaborated with notable colleagues, including Clark P Allphin and Todd E Kindorf. These partnerships have contributed to the successful development of his patented technologies.
Conclusion
Michael A DesJardin is a significant figure in the field of chemical engineering, with a focus on innovative chlorination processes. His contributions have not only advanced scientific knowledge but also provided practical solutions for the agricultural industry.