| 1933 | Yahagi Kogyo Co., Ltd., a predecessor of Toagosei, was founded. Manufacturing of ammonium sulfate, sulfuric acid, and nitric acid commenced using surplus electricity from its parent company. |
| 1942 | The second Yahagi Kogyo Co., Ltd. was founded, resulting in the establishment of Toagosei. |
| 1944 | Showa Soda Co., Ltd., Hokkai Soda Co., Ltd. and Rayon Soda Co., Ltd. were merged into the second Yahagi Kogyo Co., Ltd to form "Toagosei Chemical Industry Co., Ltd." |
| 1957 | A new factory (Tokushima Factory) was established to produce caustic soda and organic solvents in Tokushima Prefecture. |
| 1960 | An acrylic ester plant was completed in the Nagoya factory. |
| 1963 | Manufacturing of instant glue "Aron Alpha" commenced. |
| 1973 | Affiliated company Toajushi Kogyo Co., Ltd. merged with Teraoka Seisakusho, forming "Aron Kasei Co., Ltd." |
| 1983 | "Oita Chemical Co., Ltd." was established in Oita Prefecture to produce acrylic acid. |
| 1989 | The New York Office was locally incorporated to establish "Toagosei America Inc." |
| 1991 | "Tsukuba Research Laboratory" was founded to develop new technology and products centered on life science. |
| 1993 | "Toagosei Hong Kong Limited" was established to market Aron Alpha in Hong Kong. |
| 1994 | Our company was renamed "Toagosei Limited" on our 50th anniversary. Our first overseas factory was established in Ohio, U.S.A. Filling and packaging of Aron Alpha (U.S. brand name: Krazy Glue) were commenced. |
| 1995 | "Toagosei Asia Pte Ltd." was established in Singapore. |
| 1996 | Production in China was commenced at "Toagosei (Zhuhai) Limited," a factory for filling and packaging Aron Alpha. |
| 1999 | A facility for manufacturing acrylic acid and acrylic esters was completed in Singapore and its operation was commenced. |
| 2000 |
"V-Tech Corporation," a joint venture with Mitsubishi Chemical Corporation, was established to manufacture and market polyvinyl chloride.
Aron Kasei Co., Ltd. was listed on the First Section of Tokyo and Osaka stock exchanges.Taiwan Toagosei Co., Ltd. was established for sales of acrylic oligomer (Aronix). |
| 2001 |
The industrial gas business was spun off, and its operation was commenced as "Toa Techno-Gas Co., Ltd."
Production of Aronix was commenced in Taiwan (TOA-JET Chemical Co., Ltd.). |
| 2002 | Tsurumi Soda Co., Ltd. became a wholly owned subsidiary. |
| 2003 |
Kyoei Shoji Co., Ltd. and Sansei Shoji Co., Ltd. merged, resulting in a company named "TG Corporation."
The Engineering Group, Engineering Works Department, and Toakakoki Co., Ltd. were integrated, and "TOA Engineering Co., Ltd." was established. |
| 2004 |
"TG Support Corporation" was established which performs administrative work (personnel, general, financial, and accounting affairs) for the companies in our group.
A merger with Dainippon Ink and Chemicals Inc.(presently, DIC Corporation) resulted in the establishment of "TOA-DIC Zhanjiagang Chemical Co., Ltd." It was established in Zhangjiagang, Jiangsu Province in China for manufacturing and marketing of UV curable resin. Singapore Acrylic Ester Pte Ltd. became a wholly-owned subsidiary,renamed "Toagosei Singapore PTE Ltd." |
| 2006 | The polymer flocculant business was split off and MT AquaPolymer Inc. was established as a joint venture with Mitsui Chemicals Inc. (presently, a consolidated subsidiary). |
| COPYRIGHT 2008 TOAGOSEI CO., LTD. |