Clariant has sold its stake in SF-Chem, based in Pratteln, Switzerland, to Capvis, a Swiss-based private equity company. Capvis has paid CHF 22 million ($17.5 million) for the 25% stake and the transaction is expected to close at the end of September. The remaining 75% of SF-Chem, currently owned by the Basel-based agrochemical company Syngenta is also to be sold to Capvis.