Location History:
- Magnolia, AR (US) (1999)
- Baton Rouge, LA (US) (2006)
Company Filing History:
Years Active: 1999-2006
Title: Innovations by Thomas J. Callender in Antimony Catalysis and Chlorothiophosphate Purification
Introduction
Thomas J. Callender is a notable inventor based in Baton Rouge, Louisiana, recognized for his contributions to chemical processes. With two patents to his name, his work primarily focuses on improvements in chemical reactions involving antimony catalysts and the purification of dihydrocarbylchlorothiophosphates.
Latest Patents
Callender's latest patents reflect his innovative approach in the field of chemistry. The first patent, titled "Recovery of Antimony Catalyst Residues from Bromination Reaction Mixtures," describes a process that enhances the bromination of styrenic polymers in organic solvents. The method involves mixing hydrochloric or hydrobromic acid with the reaction mass, leading to the extraction of antimony catalyst residues into an acidic aqueous phase. This improvement allows for the recycling of antimony trihalide catalyst residues, promoting sustainability in the production of brominated styrenic polymers.
The second patent, "Process of Purifying Dihydrocarbylchlorothiophosphates," presents a method for upgrading crude dihydrocarbylchlorothiophosphate products contaminated with undesired components. By treating the contaminated product with chlorine followed by an aqueous solution of a reducing agent, an aqueous phase is separated from the organic phase. The process culminates in drying the resultant product to achieve higher purity standards.
Career Highlights
Thomas J. Callender is associated with Albemarle Corporation, where he applies his expertise to advance the company's innovation in chemical manufacturing. His dedication to enhancing chemical processes has earned him recognition within his field, showcasing the impact of his inventions on industry practices.
Collaborations
Throughout his career, Callender has collaborated with esteemed coworkers, including Thanikavelu Manimaran and Alvin E. Harkins, Jr. These collaborations highlight the importance of teamwork in the development of innovative solutions within the chemical industry.
Conclusion
Thomas J. Callender's work exemplifies the spirit of innovation in the field of chemical engineering. His patents not only improve existing processes but also contribute to more sustainable practices in chemical manufacturing. As a leading inventor in his field, Callender’s developments will undoubtedly continue to influence future advancements in chemical technology.