David Lee Shafer

Title: David Lee Shafer: Innovator in Adhesive Technologies

Introduction

David Lee Shafer is a notable inventor based in Houston, TX, with a focus on adhesive technologies. He holds a total of 4 patents that showcase his innovative contributions to the field. His work primarily revolves around the development of advanced adhesive formulations that enhance adhesion strength and performance.

Latest Patents

One of Shafer's latest patents is for a polybutene/liquid polydiene hot melt adhesive. This invention reveals that certain properties, including adhesion strength to smooth surfaces, can be significantly improved by creating hot melt adhesives from blends that include a poly-1-butene polymer, a tackifier resin, and a specific percentage of a liquid or semi-liquid, hydrogenated or partially hydrogenated low molecular weight conjugated diene polymer. The patent outlines three types of polymers that can be utilized in the adhesive formulation, each with specific molecular weight and hydrogenation requirements.

Another significant patent involves oil gel formulations containing high vinyl content hydrogenated materials. This invention provides compositions that comprise a hydrogenated styrene-butadiene-styrene (SEBS) block copolymer, which has a defined weight average molecular weight and vinyl content. The formulation emphasizes the importance of the copolymer's relationship with oil and other components to achieve optimal performance.

Career Highlights

David Lee Shafer is currently employed at Shell Oil Company, where he applies his expertise in adhesive technologies. His work has contributed to advancements in the industry, particularly in the development of innovative adhesive solutions that meet the demands of various applications.

Collaborations

Throughout his career, Shafer has collaborated with notable colleagues, including Glenn R. Himes and David Romme Hansen. These collaborations have fostered a creative environment that encourages the exchange of ideas and the development of cutting-edge technologies.

Conclusion

David Lee Shafer's contributions to adhesive technologies through his patents and work at Shell Oil Company highlight his role as an influential inventor in the field. His innovative approaches continue to shape the future of adhesive formulations and applications.