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Patent application: Capsules having surfactant tethered outer shells

Ben Welter - Thursday, January 11, 2018

U.S. patent application 20180009996 (applicant Microtek Laboratories Inc., Dayton, Ohio):

"Microcapsules are disclosed that have a core composition encapsulated within a polymer wall, and an inorganic shell connected to an exterior surface of the polymer wall by a surfactant. The inorganic shell has a cation attracted to the surfactant and an anion or anion equivalent chemically bonded to the cation to form the shell or has the metal portion of a metal-containing compound attracted to the surfactant to form the shell. The shell may comprise a Ca, Mg, or Ag metal compound. The shell may be a graphene oxide-metal compound."

http://www.freepatentsonline.com/20180009996.pdf

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