Walter Dong

Title: Walter Dong: Innovator in Bisphenol Purification

Introduction

Walter Dong is a notable inventor based in Houston, TX (US), recognized for his contributions to the field of chemical engineering. He holds a total of 10 patents, showcasing his innovative approaches to bisphenol purification processes. His work has significantly impacted the industry, particularly in the production of high-purity bisphenol compounds.

Latest Patents

One of Walter Dong's latest patents is titled "Process for Continuous Purification of Bisphenols." This process involves several key steps: first, forming a single liquid phase with a hot mixture of crude bisphenol and water in a specific weight ratio. Next, this mixture is continuously fed into a crystallization zone, where it is maintained at a temperature that allows for the separation of bisphenol-rich liquid, water-rich phase, and crystalline phase. The process continues with a second crystallization zone, where a high percentage of bisphenol is crystallized, ultimately leading to the recovery of purified bisphenol crystals. Another significant patent is the "Method of Purifying Bisphenols," which details the preparation of crystals of an adduct of a bisphenol with a phenol.

Career Highlights

Throughout his career, Walter Dong has worked with prominent companies such as Shell Oil Company and E.I. DuPont de Nemours and Company. His experience in these organizations has allowed him to refine his skills and contribute to advancements in chemical processes.

Collaborations

Walter has collaborated with notable coworkers, including Walter L. Petty and Donald W. Stoutamire. Their combined expertise has fostered innovative solutions in bisphenol purification.

Conclusion

Walter Dong's contributions to the field of bisphenol purification through his patents and collaborations highlight his role as a significant inventor in the chemical engineering industry. His innovative processes continue to influence the production of high-purity bisphenol compounds.