D Bruce Evans

Title: D Bruce Evans: Innovator in Paper Sizing Technologies

Introduction

D Bruce Evans is a notable inventor based in Bethlehem, PA (US). He has made significant contributions to the field of paper sizing technologies, holding a total of 3 patents. His work focuses on improving the quality and efficiency of paper production through innovative sizing compositions.

Latest Patents

One of his latest patents is titled "Rosin/hydrocarbon resin size for paper." This patent discloses a method for sizing paper at a pH of about 5.0 to about 8.5 by incorporating a sizing composition that consists essentially of rosin, at least one hydrocarbon resin, and a cationic component. The cationic component is a cationic polyamine resin, with a specific weight ratio to the rosin/hydrocarbon resin blend. Additionally, the composition may include up to 0.3% alum. Another significant patent is "Rosin sizing at neutral to alkaline pH," which also focuses on sizing paper at a pH of about 5.0-8.5. This method incorporates a similar composition, emphasizing the use of cationic polyamine resins to enhance the sizing process.

Career Highlights

D Bruce Evans is currently employed at Hercules Corporation, where he continues to develop innovative solutions for the paper industry. His expertise in the field has led to advancements that improve the performance and sustainability of paper products.

Collaborations

He collaborates with Susan M Ehrhardt, working together to push the boundaries of paper sizing technologies and enhance product quality.

Conclusion

D Bruce Evans is a prominent inventor whose work in paper sizing technologies has led to multiple patents and significant advancements in the industry. His contributions continue to shape the future of paper production.