Robert W Brunea

Title: Innovations of Robert W. Brunea in Polyurea Microcapsules

Introduction

Robert W. Brunea is an accomplished inventor based in West Linn, Oregon. He has made significant contributions to the field of materials science, particularly in the development of polyurea microcapsules. With a total of 2 patents, his work has implications for various applications, including carbonless copy paper.

Latest Patents

Brunea's latest patents focus on a process for manufacturing polyurea microcapsules. This process includes two embodiments that can be executed as either batch or continuous processes. The first embodiment involves emulsifying a liquid hydrophobic phase, which contains a core material and polyisocyanate, with an aqueous continuous phase that includes a polyhydroxylated colloidal stabilizer. This forms a suspension of microdroplets. A polyamine, such as diethylenetriamine, is then added along with a catalytic amount of an alkaline base, initiating an interfacial polyaddition reaction that results in the formation of polyurea microcapsules. The second embodiment is similar but incorporates a surfactant with multiple S-containing substituent groups. The microcapsules produced exhibit excellent impermeability, resistance to agglomeration, and outstanding copy-forming ability, making them particularly suitable for use in carbonless copy paper.

Career Highlights

Robert W. Brunea is currently associated with Boise Cascade Corporation, where he continues to innovate and develop new materials. His expertise in the field has led to advancements that enhance product performance and reliability.

Collaborations

Brunea collaborates with Mike S. Juang, contributing to the innovative environment at Boise Cascade Corporation. Their combined efforts focus on pushing the boundaries of material science.

Conclusion

Robert W. Brunea's work in the development of polyurea microcapsules represents a significant advancement in materials technology. His patents not only showcase his innovative spirit but also highlight the potential applications of his inventions in various industries.