Company Filing History:
Years Active: 2002-2005
Title: Tetsuya Kajihara: Innovator in Chemical Production
Introduction
Tetsuya Kajihara is a prominent inventor based in Himeji, Japan. He has made significant contributions to the field of chemical production, holding a total of 7 patents. His innovative approaches have led to advancements in the production of maleic anhydride and (meth)acrylic esters.
Latest Patents
One of Kajihara's latest patents is a method for the production of maleic anhydride. This invention discloses a method that includes an azeotropic distillation step to dehydrate a crude maleic acid-containing aqueous solution. The method is characterized by using an organic solvent that exhibits a maximum dissolving concentration in water ranging from 0.1-5% by weight at a temperature of 20°C. This innovation prevents the occurrence of blocking substances, allows for continuous operation over extended periods, and facilitates the removal of by-produced acid components through distillation for azeotropic dehydration.
Another significant patent is a process for producing (meth)acrylic esters. This process enables the production of (meth)acrylic esters with excellent reaction yields. It utilizes an alcohol and an acid as raw materials, along with an ion-exchange resin as a catalyst. The process is characterized by a dehydration step followed by an esterification step, where the esterification reaction occurs after the dehydration step, utilizing water-impregnated ion-exchange resin and a dehydrating solvent selected from the alcohol, acid, or resulting ester.
Career Highlights
Tetsuya Kajihara is currently employed at Nippon Shokubai Co., Ltd., where he continues to innovate in the field of chemical production. His work has been instrumental in developing efficient methods that enhance production processes.
Collaborations
Kajihara has collaborated with notable coworkers, including Yasuhiro Shingai and Tokumasa Ishida. Their combined expertise has contributed to the success of various projects and innovations within the company.
Conclusion
Tetsuya Kajihara's contributions to chemical production through his patents demonstrate his commitment to innovation and excellence in the field. His work continues to influence the industry and pave the way for future advancements.