Obtaining micro-/nano- particulated composite comprises adding compounds to fluid A to obtain mixture A, adding fluid B to mixture A to form solution AB, maintaining pressure of solution AB, and reducing pressure of solution AB

摘要

A micro- or nano- particulated composite is obtained by adding >=2 Compounds C (1-2C) to fluid A, the compound being insoluble in fluid A, to obtain a mixture A; adding fluid B to mixture A, such that fluid B at working pressure Pw is miscible with mixture A and acts as co-solvent to form a solution AB; maintaining working pressure Pw of solution AB; and reducing working pressure Pw of solution AB to atmospheric pressure. Obtaining the micro- or nano- particulated composite involves, at atmospheric pressure and at working temperature (Tw): (A) adding >=2 Compounds (C) (1-2C) to fluid (A), in which the compounds is insoluble in fluid (A), to obtain mixture (A); (B) adding fluid (B) to mixture (A), such that fluid (B) at working pressure (Pw) is miscible with mixture (A) and acts as co-solvent to form solution (AB), with (Pw) being higher than atmospheric pressure and lower than a critical pressure (Pc) of the solution (AB), and with (Tw) being lower than the critical temperature of the solution (AB); (C) maintaining (Pw) of solution (AB); and (D) reducing (Pw) of solution (AB) to the atmospheric pressure, so that an increase arises in the ideally homogeneous supersaturation throughout the solution (AB), with consequent precipitation of >=2 micro- or nanoparticulated Compounds (C). An independent claim is also included for a composite that can be obtained according to the above method.