Robert A Weiss

Title: Innovations of Robert A Weiss in Thermoplastic Polyurethanes

Introduction

Robert A Weiss is an accomplished inventor based in Akron, OH. He has made significant contributions to the field of thermoplastic polyurethanes (TPUs) with a total of 5 patents to his name. His innovative approaches have paved the way for advancements in polymer technology.

Latest Patents

One of his latest patents focuses on softening thermoplastic polyurethanes using ionomer technology. This invention provides a novel approach to the addition of plasticizers for softening TPUs, which involves lowering the durometer and the melt viscosity. The method incorporates bonded sulfonate groups with quaternary ammonium counterions into the TPU. By using an ionic diol, such as N,N-bis (2-hydroxyethyl)-2-aminoethane-sulfonic acid (BES), along with various bulky alkyl ammonium cations during the chain extension step of TPU synthesis, the softening effect is achieved. The steric hindrance of the bulky quaternary ammonium groups is believed to weaken the dipole-dipole interactions of the sulfonate groups and lower the crystallinity of the hard block. This creates additional free volume that softens the polymer and reduces the melt viscosity.

Career Highlights

Throughout his career, Robert has worked with notable organizations, including the University of Akron and Covestro LLC. His work has significantly impacted the development of advanced materials in the industry.

Collaborations

Robert has collaborated with talented individuals such as Matthew L Becker and Zachary Kurtiss Zander, contributing to the success of his innovative projects.

Conclusion

Robert A Weiss is a prominent inventor whose work in thermoplastic polyurethanes has led to significant advancements in polymer technology. His innovative approaches continue to influence the field and inspire future developments.