Kyuya Yamazaki

Title: Kyuya Yamazaki: Innovator in Photocurable Resin Technology

Introduction

Kyuya Yamazaki is a prominent inventor based in Ibaraki, Japan. He has made significant contributions to the field of photocurable resin compositions, holding a total of 13 patents. His work focuses on developing materials that enhance the performance and reliability of optical fibers.

Latest Patents

Yamazaki's latest patents include a photocurable resin composition and a method for producing the same. This invention provides a photocurable resin composition that inhibits the deactivation of a bisacylphosphine oxide-series photopolymerization initiator, making it particularly useful for coating optical fibers. The composition consists of a polyurethane (meth)acrylate oligomer, an ethylenically unsaturated compound, a photopolymerization initiator, and a tertiary amine, while excluding any tin components. The incorporation of the tertiary amine helps to prevent the decomposition and deactivation of the photoinitiator. Additionally, the resin composition is designed for primary coating of glass fibers or indirect coating of optical fibers, with the coating layer being cured by light irradiation.

Another notable patent is the coating composition for optical fibers, which utilizes a polyurethane (meth)acrylate oligomer based on a urethane prepolymer. This composition has a low viscosity, making it suitable for rapid fiber-drawing during optical fiber production. The cured material exhibits a high elastic modulus and elongation, essential properties for durable materials, while maintaining stability across temperature changes.

Career Highlights

Throughout his career, Kyuya Yamazaki has worked with notable companies such as Takeda Chemical Industries, Inc. and Shin-Etsu Chemical Co., Ltd. His experience in these organizations has contributed to his expertise in developing innovative materials for the optical fiber industry.

Collaborations

Yamazaki has collaborated with esteemed colleagues, including Sachio Igarashi and Yoshio Kamatani. These partnerships have fostered a collaborative environment that has led to advancements in resin technology.

Conclusion

Kyuya Yamazaki's contributions to photocurable resin technology have significantly impacted the optical fiber industry. His innovative patents and collaborations highlight his dedication to enhancing material performance and reliability.