Kenneth N Yarbrough

Title: Kenneth N Yarbrough: Innovator in Polymer Processing

Introduction

Kenneth N Yarbrough is a notable inventor based in Orange, TX (US). He has made significant contributions to the field of polymer processing, particularly through his innovative patent that addresses the challenges of grinding soft and tacky polymers.

Latest Patents

Yarbrough holds a patent for a "Process for ambient temperature grinding of soft polymers." This invention allows soft and tacky polymers to be ground at ambient temperature using a grinding aid in an attrition mill. The mill operates with counter-rotating grinding elements at a minimum tip speed of 170 m/sec and a throughput exceeding 90 kg/hr. The grinding aid, which can be organic or inorganic such as calcium carbonate, is used in amounts ranging from 5-20% based on the weight of the polymer. The process ensures that nearly all of the grinding aid is retained on the softened polymer particles, enhancing polymer flow and minimizing the disposal of loose grinding aid. Additionally, air is drawn through the mill to serve as a material carrier medium and to cool the mill if necessary.

Career Highlights

Kenneth N Yarbrough is associated with E.I. DuPont De Nemours and Company, where he has applied his expertise in polymer processing. His work has contributed to advancements in the efficiency and effectiveness of polymer grinding techniques.

Collaborations

Yarbrough has collaborated with notable coworkers such as Fred R Feder and Arthur W Opsahl, further enhancing the innovative environment in which he works.

Conclusion

Kenneth N Yarbrough's contributions to polymer processing through his innovative patent demonstrate his commitment to advancing the field. His work not only improves the efficiency of grinding soft polymers but also sets a standard for future innovations in the industry.