Chemcentral Corporation has acquired substantially all of the assets of Southwest Solvents & Chemicals and certain affiliates. The acquisition is subject to final due diligence, the negotiation of a detailed purchase agreement and the execution of other related agreements.      M.K. Hacas, Chemcentral’s southwest regional vice president, said the Southwest Solvents & Chemicals acquisition “will provide Chemcentral with a stronger position in the southern and southwestern U.S., includi...