Lawrence J Justice

Title: Innovations of Lawrence J Justice

Introduction

Lawrence J Justice is a notable inventor based in Louisville, KY (US). He has made significant contributions to the field of materials science, particularly in the development of hydrogenated nitrile rubber. With a total of four patents to his name, Justice continues to push the boundaries of innovation in his industry.

Latest Patents

One of Justice's latest patents is focused on hydrogenated nitrile rubber with reduced catalyst impurity. This innovative process involves a two-step method for recovering the residual hydrogenation catalyst from the hydrogenated nitrile rubber solution. The first step includes catalyst extraction using an ammonium salt and water, which may also involve an oxidation step. The second step is a separation and column recovery process utilizing functional ion exchange resins to effectively separate the ammonia-catalyst complex from the hydrogenated nitrile rubber solution. The ammonium salts used for extraction include ammonium chloride, ammonium bromide, ammonium iodide, and ammonium acetate. The functional groups in the ion exchange resins are selected from a variety of compounds, including thiourea, thiouronium, thiol, amine, diamine, triamine, TMT, dithiocarbamate, and carbodithioate.

Another significant patent by Justice is the process for recovering residual hydrogenation catalyst from hydrogenated nitrile rubber solution. This method employs a chelation step with a chelating agent, followed by a series of extractions using semi-coagulation with polar solvents. Optional washing steps are included for the separation of the catalyst-chelating agent complex from the hydrogenated nitrile rubber solution. The chelating agents utilized in this process include xanthate, dithiocarbamate, and trithiocarbonate compounds.

Career Highlights

Justice is currently employed at Zeon Chemicals L.P., where he continues to innovate and develop new materials. His work has had a significant impact on the industry, particularly in enhancing the efficiency and effectiveness of hydrogenated nitrile rubber applications.

Collaborations

Throughout his career, Justice has collaborated with talented individuals such as Soobum Choi and Mahesh Datla. These partnerships have contributed to the advancement of his research and the successful development of his patents.

Conclusion

Lawrence J Justice is a prominent inventor whose work in hydrogenated nitrile rubber has led