Company Filing History:
Years Active: 2018
Title: Yohei Koyama: Innovator in Water-Based Coating Technologies
Introduction
Yohei Koyama is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of coating technologies, particularly with his innovative approach to water-based coating compositions. His work is characterized by a focus on environmentally friendly solutions that meet modern industrial needs.
Latest Patents
Koyama holds a patent for a water-based coating composition and a method for forming a multilayer coating film using this composition. The patent describes a core/shell type emulsion resin that combines an acrylic resin as the core and a polyurethane resin as the shell. The specific mass ratio of the core and shell portions ranges from 20/80 to 80/20. The acrylic resin features a hydroxyl group value of 40 to 140 mg KOH/g and an acid value of 0 to 10 mg KOH/g. The polyurethane resin has a hydroxyl group value of 20 to 80 mg KOH/g and an acid value of 10 to 60 mg KOH/g. Additionally, the total mass ratio of constituent units derived from dibasic acids and/or dihydric alcohols with 10 to 60 carbon atoms in the polyurethane resin is maintained at 10 to 50 mass % relative to the solid resin content.
Career Highlights
Koyama is currently employed at BASF Japan, Ltd., where he continues to develop innovative coating solutions. His work has been instrumental in advancing the capabilities of water-based coatings, making them more efficient and sustainable for various applications.
Collaborations
Throughout his career, Koyama has collaborated with notable colleagues, including Souichi Mori and Hisayuki Nakashima. These collaborations have fostered a creative environment that encourages the exchange of ideas and the development of cutting-edge technologies.
Conclusion
Yohei Koyama's contributions to the field of water-based coatings exemplify his commitment to innovation and sustainability. His patent and ongoing work at BASF Japan, Ltd. highlight his role as a key player in advancing environmentally friendly coating technologies.