Company Filing History:
Years Active: 1989-1990
Title: Haruko Takai: Innovator in Silane Chemistry
Introduction
Haruko Takai is a notable inventor based in Chiba, Japan, recognized for his contributions to the field of silane chemistry. With a total of two patents to his name, Takai has made significant advancements in the preparation of epoxy group-containing silanes and aminopropyl alkoxy silanes.
Latest Patents
Takai's latest patents include a process for preparing epoxy group-containing silanes. This innovative method involves the hydrosililation of a terminally unsaturated epoxy compound with a hydro-alkoxy silane using a platinum catalyst. The improvement in this process lies in carrying out the hydrosililation in the presence of an alcohol, which suppresses the formation of internally sililated isomers and achieves approximately 100% selectivity for the desired terminally sililated product.
Another significant patent is for the preparation of aminopropyl alkoxy silanes. This process entails reacting an allylamine with a hydro-alkoxy silane in the presence of a rhodium complex with inorganic ligands, one of which is carbonyl. This method allows for the high selectivity and yield of the desired gamma-isomer within a short reaction time. The presence of carbon monoxide and/or a cyclic olefinic compound further enhances the selectivity and yield, while also extending the catalyst's life.
Career Highlights
Haruko Takai is currently employed at Toa Nenryo Kogyo Kabushiki Kaisha, where he continues to innovate in the field of silane chemistry. His work has contributed to advancements in various applications of silanes in industry.
Collaborations
Takai has collaborated with notable coworkers, including Yoshiharu Okumura and Chihiro Imai, who have also contributed to the field of silane chemistry.
Conclusion
Haruko Takai's innovative work in silane chemistry has led to significant advancements in the preparation of specialized silanes. His contributions continue to impact the industry positively, showcasing the importance of innovation in chemical processes.