Process for preparing a crystal suspension
AssigneeSyngenta Limited
InventorsNeil George, Stephen Dawson, William Malcolm Logan Wood
Life of this patent
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Abstract
A process for preparing a crystal suspension of an organic compound which has a ΔH/RT value (where ΔH is the heat of fusion of the compound, R is the molar gas constant and T is the melting point of the compound) in the range of 1 to 10, the process comprising dispersing a melt of the organic compound in a liquid dispersion medium, typically water, to form an emulsion, typically an oil-in-water emulsion, cooling the emulsion below the melting point of the organic compound and subjecting the emulsion to ultrasonic vibration.
Claims19
A process for preparing a crystal suspension of an organic compound which has a ΔH/RT value in the range of 1 to 10, the process comprising
- dispersing a melt of the organic compound in a liquid dispersion medium to form an emulsion,
- cooling the emulsion below the melting point of the organic compound, and
- crystallizing the organic compound from the emulsion by ultrasonic vibration to make the crystal suspension of the organic compound.
Dependencies are inferred from the claim text.