Liquiflash particles and method of making same
AssigneeFuisz Technologies Ltd.
InventorsGarry L. Myers, Robert K. Yang, Mark R. Herman
Life of this patent
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Abstract
The present invention is a method of making discrete particles by subjecting an organic feedstock to liquiflash conditions whereby the feedstock is transformed instantaneously from solid to liquiform to solid. Liquiform is a transient condition wherein the feedstock has substantially unimpeded internal flow. Shear force is imparted to the liquiform feedstock in an amount sufficient to separate tiny masses of feedstock. The tiny masses solidify as discretized particles. The present invention also includes unique products resulting from the process, e.g., a monodispersed microsphere product and coated particles prepared therefrom.
Claims19
A method of making discrete particles comprising:
- a) subjecting a solid, organic feedstock, capable of being transformed to liquiform in the substantial absence of dissolving medium, to liquiflash conditions which transforms said feedstock from a solid to a liquid to a solid under conditions of heat and centrifugal force to provide substantially unimpeded internal flow of said feedstock while liquified and said liquified feedstock having a viscosity such that all impedance to form liquid droplets is eliminated, said transformation occurring in not greater than five (5) seconds, and
- b) imparting shear force against liquified feedstock which occurs during said transformation set forth in step "a" in an amount sufficient to separate discrete particles by natural mass separation of said flowing feedstock in the presence of said shear force impinging thereon while in said unimpeded-flow condition.
A method of making a coated discrete particle comprising:
- providing at least one coating to a discrete particle prepared by
- a) subjecting a solid, organic feedstock, capable of being transformed to liquiform in the substantial absence of dissolving medium, to liquiflash conditions which transforms said feedstock from a solid to a liquid to a solid under conditions of heat and centrifugal force to provide substantially unimpeded internal flow of said feedstock while liquified and said liquified feedstock having a viscosity such that all impedance to form liquid droplets is eliminated, said transformation occurring not greater than five (5) seconds, and
- b) imparting shear force against liquified feedstock which occurs during said transformation set forth in step "a" in an amount sufficient to separate discrete particles by natural mass separation of said flowing feedstock in the presence of said shear force impinging thereon while in said unimpeded-flow condition.
A method of improving flow property of a solid, organic feedstock comprising:
- a) subjecting a solid, organic feedstock, capable of being transformed to liquiform in the substantial absence of dissolving medium, to liquiflash conditions which transforms said feedstock from a solid to a liquid to a solid under conditions of heat and centrifugal force to provide substantially unimpeded internal flow of said feedstock while liquified and said liquified feedstock having a viscosity such that all impedance to form liquid droplets is eliminated, and said transformation occurring in not greater than five (5) seconds, and
- b) imparting shear force against liquified feedstock which occurs during said transformation set forth in step "a" in an amount sufficient to separate discrete particles by natural mass separation of said flowing feedstock in the presence of said shear force impinging thereon while in said unimpeded-flow condition.
A method of improving flow property of a coated solid, organic feedstock comprising:
- providing at least one coating to a particle prepared by
- a) subjecting a solid, organic feedstock, capable of being transformed to liquiform in the substantial absence of dissolving medium, to liquiform conditions which transforms said feedstock from a solid to a liquid to a solid under conditions of heat and centrifugal force to provide substantially unimpeded internal flow of said feedstock while liquified and said liquified feedstock having a viscosity such that all impedance to form liquid droplets is eliminated, said transformation occurring in not greater than five (5) seconds, and
- b) imparting shear force against liquified feedstock which occurs during said transformation set forth in step "a" in an amount sufficient to separate discrete particles by natural mass separation of said flowing feedstock in the presence of said shear force impinging thereon while in said unimpeded-flow condition.
Dependencies are inferred from the claim text.