Daryl L Stein

Title: Daryl L Stein: Innovator in High Density Polyethylene Technology

Introduction

Daryl L Stein is a notable inventor based in West Chester, OH (US). He has made significant contributions to the field of polymer science, particularly in the development of high density polyethylene (HDPE) compositions. His innovative work has led to advancements that improve processing stability in polyethylene resins.

Latest Patents

Daryl L Stein holds a patent for "High density polyethylenes with improved processing stability." This patent describes Phillips' process high density polyethylene resin compositions that utilize a combination of stabilizers, including a hindered phenol and a phosphite compound. The phosphite compound specifically mentioned in the patent is 2, [[2,4,8,10-tetrakis(1,1-dimethylethyl)dibenzo[d,f][1,3,2]-dioxaphosphepin-6-yl]oxy]-N,N-bis [2-[[2,4,8,10-tetrakis (1,1-dimethylethyl) dibenzo[d,f][1,3,2]dioxaphosphenpin-6-yl]oxy]-ethyl]ethanamine. This invention addresses the challenge of eliminating rapid changes in melt viscosity during the processing of HDPE resins under high shear conditions.

Career Highlights

Daryl L Stein is associated with Quantum Chemical Company, where he has applied his expertise in polymer technology. His work has been instrumental in enhancing the performance characteristics of polyethylene materials, making them more suitable for various industrial applications.

Collaborations

Daryl has collaborated with Stephen M Imfeld, contributing to the advancement of polymer science and the development of innovative solutions in the field.

Conclusion

Daryl L Stein's contributions to the field of high density polyethylene technology exemplify the impact of innovative thinking in materials science. His patent for improved processing stability in HDPE compositions showcases his commitment to advancing polymer technology.