ICR (KU) Vinylon Collection[, ca. 1942–1943.]

Vinylon is the first synthetic fiber in Japan and the second in the world. It was made from polyvinyl alcohol (PVA), and invented by professor Ichiro Sakurada (Faculty of Engineering, and Institute for Chemical Research) and others in 1939. “A plan document: manufacturing plant of wool-like synthetic fiber #1” and “an experimental apparatus of Vinylon spinning”, which have been kept in Institute for Chemical Research, were certified as Chemical Heritage by the Chemical Society of Japan in 2012.