Michael J. Elder, an accomplished inventor based in Baltimore, MD, has made significant contributions to the field of olefin polymerization. His inventive mind has resulted in two vital patents that enhance the efficiency and quality of polymer production, showcasing his dedication to innovation.

Latest Patents

Michael's latest patents include a procatalyst composition made with a combination of internal electron donors. This phthalate-free procatalyst composition is designed for olefin polymerization, demonstrating outstanding polymerization activity and responsiveness to hydrogen. The resultant polyolefin features high stereoregularity, an enhanced melt flow rate, and a desirable molecular weight distribution. The method of producing this composition involves the reaction of a magnesium support precursor with a tetravalent titanium halide and various internal electron donors. Notably, the first donor consists of substituted phenylene aromatic diesters, while the second donor is a polyether, preferably a 1,3-diether. In an embodiment, the support precursor utilized is a spherical spray-crystallized MgCl-EtOH adduct.

His second patent revolves around the process of making a modified metallocene catalyst, along with the resultant catalyst produced and its applications. This innovation encompasses olefin polymerization catalysts or systems comprised of a metallocene pre-catalyst compound or a polymerization-active metallocene compound, combined with a titanium-containing metallocene compound. The invention ensures that the titanium-containing metallocene compound remains inactive or substantially inactive before or during the usage of the catalyst system for olefin polymerization. The disclosed processes prioritize producing catalyst systems that yield polyolefins with desirable properties, such as melt index and molecular weight distribution, essential for manufacturing polyolefin film products, particularly LLDPE film. A preferred catalyst consists of a zirconium or hafnium metal-containing metallocene, an inactivated titanocene, and a SiO₂ support carrier.

Career Highlights

Throughout his career, Michael J. Elder has worked with renowned companies, including W.R. Grace & Co., where he honed his expertise in polymerization technologies. His work at these institutions has empowered him to develop innovative solutions that benefit the industry.

Collaborations

Michael's journey in innovation is enriched by collaborations with talented coworkers such as Michael D. Jensen and Andrew G. Singleton. These partnerships have fostered a dynamic environment for creative problem-solving and advancement in polymerization methodologies.

Conclusion

Michael J. Elder stands out as a significant figure in the field of olefin polymerization. His inventive contributions not only reflect his engineering prowess but also his commitment to advancing the industry's technological landscape. As he continues to innovate, his work is set to influence future developments in polymer science significantly.

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