Company Filing History:
Years Active: 2006-2009
Title: The Innovative Contributions of Jean-François Lelong
Introduction
Jean-François Lelong is a notable inventor based in Tracy-le-Mont, France. He has made significant contributions to the field of chemistry, particularly in the development of metallocene complexes. With a total of 4 patents to his name, Lelong's work has implications for catalysis and polymerization processes.
Latest Patents
Lelong's latest patents include the "Racemoselective preparation of bridged metallocene complexes having unsubstituted or 2-substituted indenyl ligands." This invention describes a process for preparing racemic metallocene complexes by reacting transition metal complexes with cyclopentadienyl derivatives of alkali metals or alkaline earth metals. The reaction mixture is heated to a temperature ranging from -78 to 250 °C, leading to the formation of metallocene complexes that can be used as catalysts in the polymerization of olefinically unsaturated compounds or in stereoselective synthesis.
Another significant patent is the "Racemoselective preparation of isolable ansa-metallocene biphenoxide complexes." This invention outlines a method for preparing racemic metallocene biphenoxide complexes through a similar reaction process involving bridged transition metal complexes. The resulting complexes serve as catalysts or constituents of catalysts for various chemical reactions.
Career Highlights
Jean-François Lelong is currently associated with Basell Polyolefine GmbH, where he continues to innovate in the field of polymer chemistry. His work has been instrumental in advancing the understanding and application of metallocene technology.
Collaborations
Lelong has collaborated with notable colleagues such as Hans-Robert-Hellmuth Damrau and Patrik Müller. These collaborations have further enriched his research and development efforts in metallocene complexes.
Conclusion
Jean-François Lelong's contributions to the field of chemistry through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the development of catalysts and polymerization processes, showcasing the importance of innovation in scientific research.
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