Bret J Chisholm

Title: Bret J Chisholm: Innovator in Polymer Chemistry

Introduction

Bret J Chisholm is a notable inventor based in Hattiesburg, MS (US). He has made significant contributions to the field of polymer chemistry, particularly in the synthesis of advanced polymers. With a total of 2 patents, his work has had a considerable impact on the industry.

Latest Patents

Chisholm's latest patents include the "Synthesis of polyisobutylene star-branched polymers via living" and "Process for cationic polymerizations." The first patent focuses on the synthesis of star polymers containing polyisobutylene (PIB) using the arm-first, core-last method. These polymers exhibit superior properties compared to known hydrogenated polyisoprene star-branched polymers due to their inherent lack of unsaturation. The second patent details the production of elastomeric polymers through cationic polymerization in the presence of titanium tetrachloride and an electron pair donor, such as pyridine or a non-hindered alkylpyridine. This method results in polymers with very narrow, mono-modal molecular weight distributions, enhancing their properties.

Career Highlights

Throughout his career, Bret J Chisholm has worked with esteemed organizations, including the University of Southern Mississippi and Shell Oil Company. His experience in these institutions has allowed him to develop and refine his innovative approaches to polymer synthesis.

Collaborations

Chisholm has collaborated with notable colleagues, including Robson F Storey and Youngkwan Lee. These partnerships have contributed to the advancement of research in polymer chemistry.

Conclusion

Bret J Chisholm's contributions to polymer chemistry through his patents and collaborations highlight his role as an innovator in the field. His work continues to influence the development of advanced materials and processes.