Method of preparing powdered, free-flowing tocopheryl succinate
AssigneeDanochemo A/S
InventorBitten Thorengaard
Life of this patent
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Abstract
A method of preparing powdered, free-flowing tocopheryl succinate having a high bulk density comprising melting a mixture of tocopheryl succinate and wax, spraying the melt in a spraying zone containing a cloud of a powdering agent consisting of fine tocopheryl succinate and an additional powdering agent, and maintaining the product formed in a fluidized state by introducing cooling air until the tocopheryl succinate particles have hardened, and separating the product formed into a product fraction and a fine fraction, and recyclying the fine fraction to the spraying zone.
Claims14
A method of preparing powdered, free-flowing tocopheryl succinate having a high bulk density wherein tocopheryl succinate is melted and the melt is sprayed so as to form droplets which are then cooled, comprising the steps of forming a melt of tocopheryl succinate and wax, spraying said melt in an spraying zone containing a cloud of a powdering agent in the form of particles of fine tocopheryl succinate and an additional powdering agent, maintaining the product thus formed in a fluidized state by supplying cooling air thereto for a sufficiently long period of time for the tocopheryl succinate particles to harden, separating the product formed into a product fraction and at least one fine fraction, and recycling the fine fraction to the spraying zone.
Dependencies are inferred from the claim text.