Process for in-situ synthesis of dispersion ZnO—TiO2 nanoparticles in oil
US10633609B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2018 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Sep 5, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2050/015
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a process for in situ synthesis of dispersion of ZnO and TiO2 nanoparticles in an oil medium, wherein the process comprises: (a) providing layered basic zinc hydroxide (LBZ) in an oil medium, containing a dispersant, (b) providing a titanium precursor in the oil medium to obtain a mixture, (c) hydrolyzing the mixture to obtain a suspension, and (d) decomposing the suspension to obtain a dispersion of mixture of ZnO and TiO2 nanoparticles. The present invention also provides an oil dispersion comprising dispersant stabilized mixture of zinc oxide and titanium dioxide nanoparticles were synthesized through this process. The dispersion contains up to 2.5 Wt % metals loading balanced with dispersant and base oil or dispersant alone. Addition of this dispersion to oil of lubricating viscosity improves the anti-wear property and resulting a low SAPS formulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.