Nobukazu Negishi

Title: Nobukazu Negishi: Innovator in Pressure-Sensitive Adhesives

Introduction

Nobukazu Negishi is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of pressure-sensitive adhesives, holding three patents that showcase his innovative approach to adhesive technology. His work is particularly relevant in industries that require high-performance adhesive solutions.

Latest Patents

Negishi's latest patents include a pressure-sensitive adhesive composition and a pressure-sensitive adhesive sheet. This composition features a block copolymer of a monovinyl-substituted aromatic compound and a conjugated diene compound, combined with a tackifier resin and a softening agent. The tackifier resin consists of a natural product-based resin with a softening point higher than 80° C. and a petroleum-based resin with a softening point above 100° C. The formulation is designed to optimize adhesive performance while maintaining environmental considerations.

Another notable patent is for a hot-melt pressure-sensitive adhesive composition. This innovative formulation allows for the creation of a pressure-sensitive adhesive layer without rapid gelation during heating and melting. It is a solvent-free composition that includes a base polymer, an isocyanate crosslinking agent, and a specific tackifier that is a reaction product of two compounds. This patent emphasizes the importance of efficiency and effectiveness in adhesive applications.

Career Highlights

Nobukazu Negishi is currently employed at Nitto Denko Corporation, a leading company in the adhesive and materials industry. His role involves research and development, where he focuses on creating advanced adhesive solutions that meet the evolving needs of various markets. His expertise in polymer chemistry and adhesive technology has positioned him as a key player in his field.

Collaborations

Negishi has collaborated with notable colleagues, including Itsuhiro Hatanaka and Hiroaki Takahashi. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas, further enhancing the development of new adhesive technologies.

Conclusion

Nobukazu Negishi's contributions to the field of pressure-sensitive adhesives demonstrate his commitment to innovation and excellence. His patents reflect a deep understanding of material science and a dedication to creating effective adhesive solutions. Through his work at Nitto Denko Corporation and collaborations with fellow researchers, he continues to influence the adhesive industry positively.