Location History:
- Orangeburg, SC (US) (2000)
- Emerson, AR (US) (2002)
Company Filing History:
Years Active: 2000-2002
Title: Joseph D McLean: Innovator in Chemical Purification and Synthesis
Introduction
Joseph D McLean is an accomplished inventor based in Emerson, Arkansas, known for his significant contributions to chemical purification and synthesis. With a total of two patents under his name, McLean has developed innovative methods that enhance the efficiency and effectiveness of chemical processes.
Latest Patents
One of McLean's latest patents focuses on the purification of arylene polyphosphate esters. This innovation minimizes or prevents emulsion formation and suppresses hydrolytic product degradation during the purification of impure bisphenol-A bis(diphenylphosphate). The method involves creating a hydrocarbon solution of bisphenol-A bis(diphenylphosphate) along with impurities, using a solvent that combines at least one aromatic and one paraffinic hydrocarbon. The process is further refined by washing this solution with water or an aqueous buffer solution, followed by multiple washes with an aqueous alkaline solution. This meticulous approach results in a purified organic phase that can be efficiently separated from the aqueous phase.
In his other patent, McLean has developed methods for the preparation of carboxylic compounds and their derivatives. This process employs palladium-catalyzed arylation of an olefin, such as ethylene, with various aromatic halides in specified media. After a distinct acid or base phase separation, the palladium-catalyzed carbonylation of the olefinically-substituted aromatic intermediate is conducted using CO and either water or alcohol. This innovative technique allows for the creation of high-purity arylalkylcarboxylic acids or esters, along with efficient catalyst recovery procedures for industrial application.
Career Highlights
Joseph D McLean has made a significant impact in the field of chemical engineering while working with Albemarle Corporation. His expertise in developing industrial-scale processes has not only led to the creation of innovative patents but has also contributed to the efficiency and economic viability of chemical manufacturing.
Collaborations
Throughout his career, McLean has collaborated with various professionals, including W Dirk Klobucar and Gary D Heidebrecht. Their teamwork has fostered an environment of creativity and innovation, further propelling advancements in chemical processes.
Conclusion
In conclusion, Joseph D McLean stands out as a notable inventor in the realm of chemical purification and synthesis. His innovative patents, career achievements with Albemarle Corporation, and collaborations highlight his dedication to enhancing chemical manufacturing processes. McLean's work not only contributes to scientific advancement but also exemplifies the potential for innovation in industry.