Anthony Parrish

Title: Innovations by Anthony Parrish in Mechanical Pulp Bleaching

Introduction

Anthony Parrish is an accomplished inventor based in Kalama, WA (US). He holds 2 patents that focus on innovative methods for bleaching mechanical pulp. His work has significantly contributed to advancements in the pulp and paper industry.

Latest Patents

One of Parrish's latest patents is titled "Refiner bleaching with magnesium oxide and hydrogen peroxide." This invention outlines methods of bleaching mechanical pulp under alkaline conditions using hydrogen peroxide. The process involves introducing a source of magnesium ions and hydroxyl ions to a refiner, allowing wood particulates to be refined into pulp while simultaneously bleaching it. Another notable patent is "High temperature peroxide bleaching of mechanical pulps." This method is designed for pulping mills with both primary and secondary refiners. It details a multi-step process that includes providing cellulosic materials, such as wood chips, and a bleaching liquor containing hydrogen peroxide and alkali. The pulp is then held at elevated temperatures to achieve the desired brightness.

Career Highlights

Throughout his career, Anthony Parrish has worked with prominent companies in the industry, including Weyerhaeuser Company Limited and North American Paper Corporation. His experience in these organizations has allowed him to refine his expertise in pulp bleaching technologies.

Collaborations

Parrish has collaborated with notable colleagues such as Roger O. Campbell and Kaaren K. Haynes. Their combined efforts have contributed to the development of innovative solutions in the field of mechanical pulp processing.

Conclusion

Anthony Parrish's contributions to the pulp and paper industry through his patents and collaborations highlight his role as a significant innovator. His work continues to influence advancements in mechanical pulp bleaching methods.