Kenichi Yamamoto

Title: Kenichi Yamamoto: Innovator in Pressure-Sensitive Adhesives

Introduction

Kenichi Yamamoto is a notable inventor based in Ibaraki, Japan. He has made significant contributions to the field of pressure-sensitive adhesives, holding a total of 4 patents. His work focuses on developing innovative adhesive compositions that enhance performance and reduce environmental impact.

Latest Patents

Yamamoto's latest patents include a pressure-sensitive adhesive composition and a pressure-sensitive adhesive sheet. The pressure-sensitive adhesive composition is a water-dispersed acrylic formulation suitable for creating adhesive sheets. It contains 100 parts by weight of an acrylic copolymer with a glass transition temperature (Tg) ranging from -70°C to -50°C. This copolymer is synthesized from a monomer starting material that includes 60 wt % or more of an alkyl (meth)acrylate and 5 wt % or less of a radical polymerizable monomer with a carboxyl group. The resulting adhesive sheet demonstrates impressive properties, such as an average SUS adhesive strength of 11 N/20 mm or greater and a PP adhesive strength of 8.5 N/20 mm or greater. Additionally, it maintains a hold time of 1 hour or longer at 80°C and a gap height of 10 mm or less in a curved surface adhesion test.

The second patent, the pressure-sensitive adhesive sheet, is designed to inhibit corrosion of non-contacting metals. This adhesive sheet features a pressure-sensitive adhesive layer made from an aqueous dispersion type adhesive composition. The composition includes an acrylic polymer synthesized using a chain transfer agent that does not contain sulfur. Notably, the amount of sulfur-containing gas released from the adhesive sheet during heating is minimal, measuring 0.043 µg/1 cm or less. The adhesive strength on an ABS sheet is 10 N/20 mm or more, and the holding time in an 80°C cohesive strength test is also 1 hour or more.

Career Highlights

Throughout his career, Kenichi Yamamoto has worked with prominent companies such as Nitto-Denko Corporation and Fujitec Co., Ltd. His experience in these organizations has contributed to his expertise in adhesive technologies and innovation.

Collaborations

Yamamoto has collaborated with notable colleagues, including Toshihide Suzuki and Akiko Takahashi. Their combined efforts have further advanced the