John W Mayfield

Title: Innovator John W. Mayfield: A Pioneer in High Melt Strength Polymers

Introduction

John W. Mayfield, based in New Castle County, Delaware, is a distinguished inventor recognized for his notable contributions to the field of polymer science. With a portfolio housing six patents, Mayfield's work focuses on the development and improvement of high melt strength propylene polymers, essential materials in various industrial applications.

Latest Patents

Among his latest inventions is the patent on "High melt strength, propylene polymer, process for making it, and use." This innovation discloses a normally solid, high molecular weight, gel-free, amorphous to predominantly crystalline propylene polymer characterized by its high melt strength. This strength is attributed to strain hardening, believed to result from free-end long chain branches of the molecular chains. The patent also elaborates on a novel process for producing this polymer through high energy radiation of a high molecular weight linear propylene polymer in a reduced active oxygen environment. By maintaining this material in such conditions for a specified duration and subsequently deactivating free radicals, Mayfield has significantly advanced the manufacturing techniques of these materials. The strain hardening polymer can be utilized in extensional flow operations, including extrusion coating, film production, and thermoforming, making it a versatile tool for various manufacturing sectors.

Career Highlights

Throughout his career, Mayfield has contributed his expertise to leading companies, including Montell North America Inc. and Himont Incorporated. His tenure in these organizations has not only shaped his personal skill set but also strengthened the industry’s understanding of polymer properties and processes, leading to widespread applications.

Collaborations

In his journey as an inventor, John W. Mayfield has collaborated with notable professionals in his field, such as Anthony J. DeNicola, Jr., and B. Joseph Scheve. These partnerships have facilitated the exchange of ideas and innovation, further enhancing the development of high-performance polymers.

Conclusion

John W. Mayfield's inventive spirit and dedication to advancing polymer technology underscore his influential role in the industry. With his groundbreaking patents and collaborative efforts, he continues to inspire future generations of inventors and researchers in the realm of materials science. The impact of his work on high melt strength propylene polymers exemplifies innovation at its finest.