Keisuke Yamada

Title: Keisuke Yamada and His Work on Polyarylene Sulfide Compositions.

Introduction

Keisuke Yamada is an inventor associated with DIC Corporation in Ichihara, Japan. His patent work addresses inorganic fillers and polyarylene sulfide resin compositions, including their production and use in molded articles.

Latest Patents

The supplied information identifies one patent associated with Yamada: “Inorganic Filler, Polyarylene Sulfide Resin Composition, Molded Article, and Methods for Producing Same.” The invention describes a composition containing 100 parts by mass of polyarylene sulfide resin and 1 to 100 parts by mass of inorganic filler treated with a sizing agent.

The patent outlines three sizing-agent options. These include a formulation containing a urethane-modified epoxy resin with an alkoxy polyoxyalkylene structure and a sulfonate-group-containing urethane resin; a copolymer made by radical copolymerization of a monomer mixture containing at least a (meth)acrylic acid ester and maleic acid or maleic anhydride; and a formulation containing a polyether resin, a urethane resin, and a silane coupling agent. The disclosed subject matter also covers the treated inorganic filler, molded articles made from the composition, and methods for producing these materials. Yamada is associated with 1 patent in the information provided.

Career Highlights

Yamada’s listed work connects polymer-resin formulation with the surface treatment of inorganic fillers. The patent describes approaches intended to incorporate treated fillers into polyarylene sulfide compositions and produce molded articles from them.

Collaborations

The supplied information names Takashi Goto and Hirokiyo Nakase as Yamada’s coworkers. It does not specify their roles in the patent or describe particular collaborative contributions.

Conclusion

Keisuke Yamada’s identified patent concerns treated inorganic fillers and polyarylene sulfide resin compositions, with related methods for producing the materials and molded articles.