G Stanley Achorn

Title: G. Stanley Achorn: A Pioneer in Polymerization Catalysts

Introduction

G. Stanley Achorn is a notable inventor located in West Chester, PA, known for his significant contributions to the field of polymerization. With a total of two patents to his name, his work has paved the way for advancements in the production of low-density polyethylene and improved catalyst dispersions.

Latest Patents

One of Achorn's latest patents focuses on the development of catalyst systems for polymerizations at high temperatures. This invention allows for the copolymerization of ethylene with C₃-C₂₀ alpha-monoolefins at high temperatures, resulting in low-density polyethylene with a density range of 0.91 to 0.93 g/cc. The catalyst used in this process is created by co-comminuting an anhydrous magnesium halide, an anhydrous aluminum halide, a titanium compound, and an electron donor. Additionally, a cocatalyst made from a synergistic mixture of an alkyl aluminum chloride and an oxygen-containing aluminum compound enhances the performance of the catalyst.

Achorn's second patent addresses the issue of catalyst dispersion stability against phase separation. In the polymerization of ethylene and its copolymerization with C₃-C₂₀ alpha-monoolefins, the pre-activated catalyst component utilizes a polymerization technique involving C₄-C₁₂ alpha-monoolefin in the presence of an alkyl aluminum compound. However, the resultant dispersions often separate into two phases rapidly, complicating uniform addition to the polymerization reaction. Achorn proposes a stable dispersion formed by replacing the alkyl aluminum compound with a synergistic mixture of an alkyl aluminum chloride and an oxygen-containing aluminum compound. This innovation significantly enhances the stability of the dispersion, preventing phase separation over extended periods.

Career Highlights

G. Stanley Achorn has made remarkable strides in his career at the National Distillers and Chemical Corporation, where he has furthered his research in polymer chemistry. His expertise has been instrumental in the development of advanced catalyst systems, which have had a lasting impact on the industry.

Collaborations

Throughout his career, Achorn has collaborated with several esteemed colleagues, including James J. Harris and Donald E. Hostetler. Their collective efforts have led to significant advancements in the field of polymerization, contributing to improved processes and materials.

Conclusion

G. Stanley Achorn is a distinguished inventor whose patents have transformed polymerization processes, particularly in the production of low-density polyethylene. His innovations in catalyst systems and dispersions have made a positive impact on the chemical industry, showcasing the importance of research and collaboration in driving innovation forward.