This inventor holds 2 USPTO granted patents. Top assignee: E.i. Dupont De Nemours and Company. Active years: 1994.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1994
Title: Frank L Rawling, Jr: Innovator in Polyether Glycol Technology
Introduction
Frank L Rawling, Jr. is a notable inventor based in Newark, DE (US). He has made significant contributions to the field of polyether glycols, particularly in the area of molecular weight distribution. With a total of 2 patents, his work has advanced the understanding and production of these important chemical compounds.
Latest Patents
Rawling's latest patents focus on reducing the molecular weight distribution of polyether glycols, specifically poly(tetramethylene ether) glycol (PTMEG). His first patent describes a process that involves distilling the low molecular weight fraction using at least one short-path distillation evaporator. This method allows for the creation of PTMEG with a narrow molecular weight distribution of about 1.25 to 1.80, or dispersity of 1.05 to 1.90. The process requires temperatures ranging from 270°C to 400°C, with a hold-up time of 10 to 200 seconds, and a vacuum between 0.001 mm and 1.0 mbar. The resulting PTMEG residue is characterized by low water content and a minimal concentration of oligomeric cyclic ethers.
His second patent also addresses the reduction of molecular weight distribution in PTMEG, targeting a distribution of about 1.90 to 2.07, or dispersity of 1.50 to 1.90. This process similarly utilizes short-path distillation evaporators, but operates at lower temperatures, between 150°C and 190°C. The conditions for this process mirror those of his first patent, ensuring the production of high-quality PTMEG.
Career Highlights
Frank L Rawling, Jr. is currently employed at E.I. du Pont de Nemours and Company, a leading organization in the field of chemical manufacturing. His innovative work has positioned him as a key figure in the development of advanced polyether glycol technologies.
Collaborations
Throughout his career, Rawling has collaborated with esteemed colleagues, including James Arnold Schultz and Suriyanarayan Dorai. These partnerships have fostered a collaborative environment that enhances the innovation process.
Conclusion
Frank L Rawling, Jr. is a distinguished inventor whose work in polyether glycols has made a significant impact on the
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile