Asahi Kasei Kogyo Kabushiki Kaisha

Agency of Industrial Science and Technology

Central Glass Company, Limited

Japan As Represented by Director General of Agency of Industrial Science

Masatake Yoshida

Shuzo Fujiwara

Yozo Kakudate

Shu Usuba

Masayuki Kawaguchi

Tamikuni Komatsu

Tadayuki Kawashima

Katsuharu Kasami

Katsutoshi Akoi

Katsutoshi Aoki

Katsumi Tanaka

Hiroyuki Yokoi

In order to produce a new substance having a diamond crystal structure, the following steps are taken in order. First, a graphite-like substance is prepared which contains boron (B), carbon (C) and nitrogen (N) as main elements. Then, the graphite-like substance is mixed with a metal powder to produce a mixture. Then, a pressure is applied to the mixture to produce a molded body, and then an explosion pressure is applied to the molded body.

Polycrystalline BCN substance and method of producing same

Acetylene can be polymerized into a polyacetylene by a solid-state polymerization reaction when it is compressed into a solid under a high pressure of, for example, 1 GPa or higher. The polyacetylene product is obtained in a bulky transparent form in contrast to conventional polyacetylenes in a fibrous form prepared by utilizing a Ziegler-Natta catalyst, and free from impurities because neither catalyst nor solvent is used in the reaction.

Solid-state polymerization of acetylene

Growing community of inventors

Tsukuba, Japan

Masatake Yoshida