Process for preparing spheroidally shaped products, solid at room temperature
AssigneeMontedison S.p.A.
InventorsMario Ferraris, Francesco Rosati
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Abstract
Solid products of spheroidal shape and having a maximum diameter of 1 to 5,000 microns are prepared starting from a mixture of at least two immiscible, mutually chemically inert liquids, one of which is in the form of a molten solid, said liquids being prsent in the mixture in a ratio such that one forms the dispersed phase while the other is the continuous phase, at least the liquid forming the dispersed phase being one which solidifies on cooling.
Claims6
Process for converting a molten product into a spheroidally shaped product solid at room temperature and having a diameter of from 1 to 5,000 microns, said molten product being selected from the group consisting of organic and inorganic compounds having a melting point comprised between 20.degree. C. and 400.degree. C., which process comprises forming a uniform mixture of the molten product with at least one liquid immiscible therewith and chemically inert thereto, and in a ratio such that the molten product will form a continuous phase, emulsifying the mixture by passing it under turbulence in a tube having a length greater than 50-100 times the inner diameter thereof and which latter is at least 3-4 times the maximum diameter of the spheroidal particles to be obtained, to produce an emulsion, quenching the emulsion by mixing it with an inert liquid at a temperature to solidify the molten liquid dispersed in the emulsion, and recovering the resulting solid spheroidal particles.
Dependencies are inferred from the claim text.