This inventor holds 1 USPTO granted patent. Top assignee: Sumitomo Chemical Company, Limited. Active years: 1981.
Company Filing History:
Years Active: 1981
Title: Junzo Saito: Innovator in Phenolic-Polybutadiene Resins
Introduction
Junzo Saito, a distinguished inventor from Niihama, Japan, has made significant advancements in the field of polymer chemistry. With one patent to his name, his innovative contributions are instrumental in the preparation of specialized resin materials.
Latest Patents
Saito's notable patent is titled "Process for preparation of a phenolic-polybutadiene-HCHO resin." This invention outlines a process that transforms liquid polybutadiene into a phenolic resin. The method involves reacting a polybutadiene with a number average molecular weight between 150 to 5,000 with phenol in the presence of an acid catalyst, resulting in a composition characterized by a polybutadiene-phenol adduct. In this adduct, one molecule of phenol is integrated per three to eight butadiene units. Furthermore, the adduct is then reacted with formaldehyde using a basic catalyst comprising a primary amine. This innovative resin composition exhibits excellent curing characteristics, electrical properties, punchability, and flexibility, making it valuable for producing laminated sheets.
Career Highlights
Junzo Saito is associated with Sumitomo Chemical Company, Limited, where he continues to contribute to advancements in the resin field. His expertise and focus on polymer chemistry have led to important developments that enhance material performance in various applications.
Collaborations
In his career, Saito has collaborated with notable individuals such as Seimei Yasui and Masakazu Sagou. These partnerships have fostered a creative environment that encourages innovation and the development of high-quality materials.
Conclusion
Junzo Saito's contributions to the field of resin technology through his patent for phenolic-polybutadiene-HCHO resin exemplify the important role inventors play in advancing materials science. His innovative approach not only enhances the properties of resin compositions but also paves the way for future developments in polymer applications.