Kenneth Stephenson Whiteley

Title: The Innovations of Kenneth Stephenson Whiteley

Introduction

Kenneth Stephenson Whiteley is a notable inventor based in Welwyn Garden City, GB. He has made significant contributions to the field of polymer chemistry, particularly in the polymerization of ethylene. With a total of 2 patents to his name, Whiteley's work has had a considerable impact on the industry.

Latest Patents

Whiteley's latest patents focus on advanced methods for ethylene polymerization. One of his patents describes a process where ethylene is polymerized or copolymerized using a transition metal catalyst at pressures ranging from 300 to 1000 atmospheres and temperatures of at least 100 degrees Celsius. This process is conducted in the presence of a volatile inert diluent, such as pentane, or with at least one 1-olefine comonomer, like buten-1. The catalyst can be a Ziegler-type catalyst or an organo-compound of a transition metal, which may be supported on materials such as silica, alumina, or magnesia. Additionally, other catalysts, including supported chromium or molybdenum oxides, can be utilized. If a solid catalyst is employed, it is preferred to use a finely dispersed material.

Another patent by Whiteley involves the production of polyethylene through a multi-zone reaction vessel. In this method, ethylene is polymerized or copolymerized at pressures of at least 300 kgm/cm². The first zone receives fresh ethylene, mixed with recycle gas from a low-pressure hopper, while subsequent zones introduce feeds containing return gas recycled from the separator. This innovative technique allows for the variation of gas feed composition across different zones, enabling the production of polymers with broader molecular weight distributions.

Career Highlights

Kenneth Whiteley has had a distinguished career at Imperial Chemical Industries Limited, where he has applied his expertise in polymer chemistry to develop innovative processes and products. His work has contributed to advancements in the production of polyethylene and other polymers, making him a respected figure in the field.

Collaborations

Whiteley has collaborated with various professionals in his field, including Richard R Cooper, to further enhance the research and development of polymerization techniques.

Conclusion

Kenneth Stephenson Whiteley is a prominent inventor whose contributions to ethylene polymerization have significantly advanced the field of polymer chemistry.