Nanometric or mesoscopic dissymetric particles, and method for preparing same
US8029897B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 28, 2003 |
| Grant date | Oct 4, 2011 |
| Priority date | — |
| Expiry date | Feb 27, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2991
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to nanometric or mesoscopic dissymmetric particles, and to a method for preparing the same.The particles have an inorganic part A and a spherical organic part B bound by physicochemical or covalent interactions. Material A is a metal oxide, a metal or a metal chalcogenide. Material B is a polymer consisting of recurrent units derived from a vinyl compound. The particles are obtained by modifying the surface of material A particles with a coupling agent C having a function FC which exhibits affinity for the polymer, and contacting the modified inorganic particles with the precursor(s) of the polymer B, in the presence of a free radical initiator and of a surfactant in solution in a solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.