Company Filing History:
Years Active: 1995-1999
Title: Richard Redfearn Hepner: Innovator in Polyester Depolymerization
Introduction
Richard Redfearn Hepner is a notable inventor based in Wilmington, NC (US). He has made significant contributions to the field of polymer chemistry, particularly in the depolymerization of polyester. With a total of 2 patents to his name, Hepner's work has implications for recycling and material recovery.
Latest Patents
Hepner's latest patents include a process for depolymerizing polyester, where polyester is depolymerized by methanolysis. In this innovative process, methanol is recovered using methyl benzoate and/or p-methyltoluate as an azeotropic agent while methanol is present. Another significant patent involves the separation of glycols from dimethyl terephthalate. This process accomplishes the separation of ethylene glycol and diethylene glycol from dimethyl terephthalate through distillation, utilizing methyl benzoate or the methyl ester of p-toluic acid as an azeotropic agent.
Career Highlights
Hepner is currently associated with E.I. du Pont de Nemours and Company, a leading organization in the field of chemical manufacturing. His work at DuPont has allowed him to explore innovative solutions in polymer chemistry and contribute to advancements in material science.
Collaborations
Hepner has collaborated with esteemed colleagues such as Robert E. Michel and Robert E. Trotter. These collaborations have fostered a productive environment for innovation and research in their respective fields.
Conclusion
Richard Redfearn Hepner's contributions to polyester depolymerization and glycol separation highlight his role as an influential inventor in the field of polymer chemistry. His work continues to pave the way for advancements in recycling and material recovery.