Company Filing History:
Years Active: 1979-1984
Title: Richard J Brewer: Innovator in Cellulose Chemistry
Introduction: Richard J Brewer, an accomplished inventor based in Kingsport, Tennessee, has made significant contributions to the field of cellulose chemistry. With a total of seven patents to his name, Brewer has pioneered innovative processes that enhance the properties and applications of cellulose esters.
Latest Patents: Two of Richard J Brewer's latest patents exemplify his expertise and forward-thinking approach. The first patent, titled "Process for preparing cellulose sulfate esters," innovatively details a method for creating water-soluble cellulose sulfate esters. This process involves slurrying cellulose in dimethylformamide, followed by the addition of liquid dinitrogen tetroxide to produce a cellulose nitrite ester. This ester is then reacted with acetylsulfuric acid in an anhydrous medium to yield the desired water-soluble product.
Brewer's second significant patent, "High temperature bleaching method for cellulose esters," provides an improved technique for bleaching cellulose esters such as cellulose acetate. This method introduces a bleaching agent mixture of hydrogen peroxide and a selected monopersulfate salt during the hydrolysis reaction, conducted between 80°C and 150°C, enhancing the efficiency and effectiveness of the bleaching process.
Career Highlights: Richard J Brewer's career at Eastman Kodak Company has been marked by his commitment to innovation and excellence. His work primarily focuses on developing methodologies that improve the performance and utility of cellulose derivatives. Brewer’s patents reflect his dedication to advancing cellulose chemistry and making significant contributions to the industry.
Collaborations: Throughout his career, Brewer has collaborated with notable professionals in the field, including Richard T Bogan and Brice S Wininger. These collaborations have fostered an environment of creativity and innovation, allowing for shared insights and advancements in cellulose technology.
Conclusion: Richard J Brewer remains a prominent figure in the realm of cellulose chemistry, with his innovative patents shaping the future of cellulose esters. His contributions at Eastman Kodak Company showcase his pivotal role in enhancing the functionality and applications of these important materials. Brewer’s work not only demonstrates his ingenuity but also his commitment to pushing the boundaries of cellulose research for practical applications.