Location History:
- Tsukuba, JP (2001)
- Ibaraki, JP (2001 - 2004)
- Niihama, JP (1992 - 2008)
Company Filing History:
7 out of 6,896 
2 out of 103 Years Active: 1992-2008
Title: Nobuyuki Nakajima: Innovator in Novolak Resin Production
Introduction
Nobuyuki Nakajima is a prominent inventor based in Niihama, Japan. He has made significant contributions to the field of chemical engineering, particularly in the production of novolak resins. With a total of 9 patents to his name, Nakajima's work has had a substantial impact on the industry.
Latest Patents
One of Nakajima's latest patents is a method of producing novolak resin. This innovative approach provides an industrially excellent method of producing a phenol novolak resin with an ortho ratio of 30% or more. The method involves either reacting a phenol and an aldehyde using an oxalic acid catalyst at temperatures between 110 to 160°C under pressure or reacting a phenol and an aldehyde under pressure while removing the heat of reaction through a condenser. This process controls the pressure to ensure that water or an organic solvent present in the reaction system is refluxed.
Career Highlights
Throughout his career, Nakajima has worked with notable companies such as Sumitomo Chemical Company, Limited and Chang Chun Plastics Co., Ltd. His expertise in chemical processes has been instrumental in advancing the production techniques of various materials.
Collaborations
Nakajima has collaborated with esteemed colleagues, including Noriaki Saito and Toshiaki Hayashi. These partnerships have fostered innovation and contributed to the successful development of new technologies in the field.
Conclusion
Nobuyuki Nakajima's contributions to the production of novolak resins and his extensive patent portfolio highlight his role as a key innovator in the chemical industry. His work continues to influence advancements in material science and engineering.