Patent ID: 8557382
Filing Date: 2013-10-15
Classification: B01J,Y10T

Abstract:
1. A microcapsule, comprising: (a) a shell encapsulating a core material having a surface, wherein said shell comprises a first organic polyelectrolyte providing a plurality of cationic or anionic charges including crosslinked gelatin and a clay filler, wherein said clay filler is functionalized with functional groups including alcohol or amine functional groups that are attracted to or react with said gelatin and said clay filler has a thickness in the range of 1 nm to 1000 nm, a width or length in the range of 100 nm to 1 micrometer and an aspect ratio in the range of 1 to 10 up to 1 to 1,000; (b) a first layer disposed on said shell comprising a first inorganic polyelectrolyte where said inorganic polyelectrolyte provides a plurality of cationic or anionic charges, opposite to the charge of said first organic polyelectrolyte, wherein said first inorganic polyelectrolyte is an inorganic material comprising clay functionalized with an electrolyte wherein said functionalized clay is in the form of nanoplatelets having a length or width of 0.1 to 200 microns; (c) a second layer disposed on the first layer comprising a second organic polyelectrolyte comprising chitosan providing a plurality of cationic or anionic charges, opposite to said charge of said first inorganic polyelectrolyte wherein the standard oxygen transfer rate is 5.0 cm