Ituo Nishiwaki

Ituo Nishiwaki is a notable inventor based in Yokkaichi, Japan. He has made significant contributions to the field of polymer chemistry, particularly in the development of conjugated diene copolymers. With a total of 3 patents to his name, Nishiwaki's work has had a considerable impact on various applications in materials science.

Latest Patents

Nishiwaki's latest patents focus on a conjugated diene copolymer and the process for producing it. The copolymer comprises (A) 40 to 90 mole % of a conjugated diene component, (B) 0.5 to 10 mole % of an alpha, beta-ethylenically unsaturated carboxylic acid component, (C) 0.1 to 5 mole % of a polyfunctional alkenyl compound component, and (D) 5 to 58 mole % of a monoolefinically unsaturated compound component. The intrinsic viscosity of the copolymer, as measured at 30°C in dimethylformamide, ranges from 0.01 to 3.0 dl/g. The width of the endothermic transition temperature section, determined by differential scanning calorimetry, is between 45°C to 120°C, with the limit temperature on the lower side being -40°C or less. This innovative copolymer, when combined with a photopolymerizable unsaturated monomer and a photosensitizer, results in a photosensitive resin composition that is soluble in aqueous alkali solutions. It exhibits excellent processability, photocurability, rubber elasticity, transparency after curing, and water resistance.

Career Highlights

Nishiwaki is associated with Japan Synthetic Rubber Co., Ltd., where he has been instrumental in advancing the company's research and development efforts in synthetic rubber and polymer materials. His expertise in polymer chemistry has led to breakthroughs that enhance the performance and applicability of synthetic materials.

Collaborations

Throughout his career, Nishiwaki has collaborated with esteemed colleagues such as Shin-ichiro Iwanaga and Tatsuaki Matsunaga. These collaborations have fostered a productive environment for innovation and have contributed to the success of their projects.