David A Bradley

Title: The Innovations of David A. Bradley

Introduction

David A. Bradley is a notable inventor based in Evansville, IN (US). He has made significant contributions to the field of materials science, particularly in the development of aromatic polycarbonate resins. His innovative work has led to advancements that improve the quality and performance of these materials.

Latest Patents

One of David A. Bradley's key patents is focused on reducing ionic impurities content in aromatic polycarbonate resins. This patent describes an aromatic polycarbonate composition that contains less than 400 parts per billion each of ionic impurities, specifically sulfate, chloride, and fluoride ions. The process involves devolatilizing these ionic impurities from the polycarbonate composition using an aqueous medium of about 1% by weight based on the weight of the polycarbonate composition. The devolatilization is preferably carried out in an extruder during the compounding of the polycarbonate composition and under a vacuum. Additionally, the extruded strands of polycarbonate resin are quenched in a deionized water bath.

Career Highlights

David A. Bradley is associated with General Electric Company, where he has applied his expertise in materials science. His work has contributed to the development of high-performance materials that are essential in various applications.

Collaborations

Throughout his career, David has collaborated with talented individuals such as Gary Eugene Spilman and Eric Thomas Gohr. These collaborations have fostered innovation and have led to the successful development of new technologies.

Conclusion

David A. Bradley's contributions to the field of aromatic polycarbonate resins demonstrate his commitment to innovation and excellence. His patent on reducing ionic impurities showcases his ability to solve complex problems in materials science. His work continues to influence the industry and pave the way for future advancements.