Patent · US Active

Rapid method for production of cerium-containing oxide organic colloids

US10544376B2 · kind B2 · utility

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17References
15Claims
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Key dates

Filing dateOct 5, 2015
Grant dateJan 28, 2020
Priority date—
Expiry dateDec 25, 2035

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC10L2290/24
  • WIPO fieldBasic materials chemistry
  • WIPO sectorChemistry

Abstract

Improved methods for producing colloidal dispersions of cerium-containing oxide nanoparticles in substantially non-polar solvents are disclosed. The cerium-containing oxide nanoparticles of an aqueous colloid are transferred to a substantially non-polar liquid comprising one or more amphiphilic materials, one or more low-polarity solvents, and, optionally, one or more glycol ether promoter materials. The transfer is achieved by mixing the aqueous and substantially non-polar materials, forming an emulsion, followed by a phase separation into a remnant polar solution phase and a substantially non-polar organic colloid phase. The organic colloid phase is then collected.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.