Allen H Filbey

Title: Allen H. Filbey: Innovator in Polyurethane Chemistry

Introduction

Allen H. Filbey is a notable inventor based in Baton Rouge, LA (US), recognized for his contributions to the field of polyurethane chemistry. With a total of 3 patents, he has made significant advancements in the development of polyurethanes and related chemical processes.

Latest Patents

Among his latest patents, Filbey has developed innovative methods for creating polyurethanes from dialkyl diaminobenzenes. This process involves the use of dialkyl diamines in conjunction with polyols and polyisocyanates, particularly in cast elastomer and reaction injection molding polyurethane processes. The dialkyl diamines are synthesized through nitration and reduction of dialkylbenzenes or by alkylation of meta-phenylenediamine. The resulting chain extenders exhibit a specific structure where R1 is a C1-C6 alkyl or C3-C6 cycloalkyl, and R2 is a C2-C6 alkyl or C3-C6 cycloalkyl. Notably, these novel diamines demonstrate unexpectedly favorable reaction times, leading to polyurethanes with excellent physical properties, while requiring little to no mold release in RIM and other processes.

Another significant patent involves a chemical process for preparing di-ortho benzyl phenols. In this method, phenols with an unsubstituted ortho-position are benzylated through a reaction with benzyl alcohol in the presence of an activated alumina catalyst, particularly gamma alumina, at a temperature that maintains the reactants in the vapor phase.

Career Highlights

Filbey's career is marked by his role at Ethyl Corporation, where he has been instrumental in advancing chemical processes and product development. His work has contributed to the company's reputation as a leader in the chemical industry.

Collaborations

Throughout his career, Filbey has collaborated with esteemed colleagues, including Donald H. Lucast and Ronald L. Shubkin. These partnerships have fostered innovation and enhanced the research capabilities within the field.

Conclusion

Allen H. Filbey's contributions to polyurethane chemistry and his innovative patents underscore his importance as an inventor. His work continues to influence the industry and pave the way for future advancements in chemical processes.