| 1924 |
PVA was discovered by Dr. O.W. Herrmann in Germany. |
| 1926 |
KURARAY Co., Ltd. established. |
| 1950 |
PVA production in Toyama Plant (Toyama Pref.) started. (The first industrialization & commercial production of PVA resin in the world.) |
| 1958 |
The marketing of PVA resin "KURARAY POVAL" started. |
| 1962 |
PVA commercial production in Nakajo Plant (Niigata Pref.) started |
| 1968 |
PVA commercial production in Okayama Plant (Okayama Pref.) started |
| 1978 |
PVA production in Toyama Plant stopped. |
| 1988 |
30th anniversary of PVA marketing for industrial applications |
| 1996 |
1996 Agreement of New project, running a joint ventured PVA plant in Singapore, with Nippon Gohsei, was announced. |
| 1999 |
PVA commercial production in Poval Asia (Singapore) started. |
| 2001 |
Reached an agreement to purchase the PVA & related business of Clariant AG. |