Bert J Held

Title: Bert J Held: Innovator in Carbonate Oligomer and Polycarbonate Preparation

Introduction

Bert J Held is a notable inventor based in Bergen op Zoom, Netherlands. He has made significant contributions to the field of chemical engineering, particularly in the preparation of carbonate oligomers and aromatic polycarbonates. With a total of 2 patents, his work showcases innovative methods that enhance production efficiency and product quality.

Latest Patents

One of his latest patents is titled "Method for the continuous preparation of carbonate oligomers." This invention relates to a method for the continuous preparation of carbonate oligomers through boundary face oligomerization of aromatic dihydroxy compounds with phosgene. The process is conducted in a loop-like reactor system without the use of a chain stopper and with minimal catalyst, utilizing static mixers and plug flow.

Another significant patent is "Method for the continuous preparation of aromatic polycarbonate having a high molecular weight." This invention describes a method for preparing aromatic polycarbonate by boundary face condensation of carbonate oligomer in the presence of an aromatic monohydroxy compound. The process is designed to operate at a temperature of no more than 70 degrees Celsius, ensuring high molecular weight and product quality.

Career Highlights

Bert J Held is associated with General Electric Company, where he applies his expertise in chemical processes. His innovative approaches have contributed to advancements in the production of high-performance materials.

Collaborations

Throughout his career, Bert has collaborated with esteemed colleagues, including Martin H Oyevaar and Hendricus H Van Hout. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Bert J Held's contributions to the field of chemical engineering through his patents and collaborations highlight his role as a significant innovator. His work continues to influence the methods used in the preparation of carbonate oligomers and polycarbonates, showcasing the importance of innovation in advancing technology.