Multiple emulsions and techniques for the formation of multiple emulsions
AssigneePresident and Fellows of Harvard College
InventorsDavid A. Weitz, Shin-Hyn Kim, Alireza Abbaspourrad
Life of this patent
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Abstract
Multiple emulsions and techniques for the formation of multiple emulsions are generally described. A multiple emulsion, as used herein, describes larger droplets that contain one or more smaller droplets therein. In some embodiments, the larger droplet or droplets may be suspended in a carrying fluid containing the larger droplets that, in turn, contain the smaller droplets. As described below, multiple emulsions can be formed in one step in certain embodiments, with generally precise repeatability, and can be tailored in some embodiments to include a relatively thin layer of fluid separating two other fluids.
Claims17
1-33. (canceled)
An article, comprising:
- a particle having a shell comprising a polymer, the particle having an average diameter of less than about 1 mm, the shell at least partially containing a fluid, wherein:
- the shell has an average thickness of less than about 0.05 times the average cross-sectional diameter of the particle and/or the shell has an average thickness of less than about 1 micrometer;
- and
- substantially all of the polymer within the shell has a glass transition temperature of at least about 85° C. and/or substantially all of the polymer within the shell is at least partially soluble in octane.
49-61. (canceled)
Dependencies are inferred from the claim text.