Stephane Denis

Title: The Innovative Contributions of Stephane Denis

Introduction

Stephane Denis is a notable inventor based in Leyviller, France. He has made significant contributions to the field of chemical engineering, particularly in the production of alkyl (meth)acrylates. With a total of 4 patents to his name, Denis continues to push the boundaries of innovation in his industry.

Latest Patents

Denis's latest patents include a method for producing alkyl (meth)acrylates. This invention relates to a method for producing a C-C-alkyl (meth)acrylate through direct esterification of (meth)acrylic acid with the corresponding alcohol. The process involves removing reaction water in the form of an azeotrope with the esterification alcohol from a distillation column mounted over the esterification reactor, which utilizes a cationic resin as a catalyst. The method is characterized by a molar ratio of alcohol to acid at the reactor's inlet being between 1.4 and 3, and the crude reaction mixture circulates in a recirculation loop at a specific rate.

Another significant patent is a process for producing light (meth)acrylic esters. This invention improves the continuous production of methyl (meth)acrylate or ethyl (meth)acrylate by direct esterification of (meth)acrylic acid with methanol or ethanol. The process operates under conditions where the acid is in excess relative to the alcohol, particularly with an acid/alcohol molar ratio of between 1.0 and 4, and under a pressure ranging from atmospheric pressure to 5 bar. This innovation minimizes the formation of ethyl ethoxypropionate during the esterification reaction, enhancing the material balance and simplifying the purification process.

Career Highlights

Stephane Denis is currently employed at Arkema France, where he applies his expertise in chemical processes. His work has significantly impacted the production methods of various chemical compounds, showcasing his commitment to innovation and efficiency in the industry.

Collaborations

Denis collaborates with talented professionals such as Serge Tretjak and Anne Moreliere. Their combined efforts contribute to the advancement of chemical engineering and the development of new technologies.

Conclusion

Stephane Denis exemplifies the spirit of innovation in the field of chemical engineering. His patents and contributions continue to influence