Use of nanomaterials in secondary electrical insulation coatings
US7964236B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2005 |
| Grant date | Jun 21, 2011 |
| Priority date | — |
| Expiry date | May 5, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/22
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Use of the barrier property effect of nanomaterials to improve the electrical insulation resistance, corrosion protection and bond strength properties of electromagnetic devices. The beneficial effects are realized with nanomaterial loadings of 1-20%, and preferably between 1-5%, parts by weight of coating resins. Nanomaterials include, but are not limited to, silica, alumina, zirconia, and antimony pentoxide, which are dispersed either directly into a coating, or pre-dispersed in a carrier appropriate to the solvent of the resin system. Resulting formulations benefit from the fact anti-settling agents need not be incorporated into the resin to keep the inorganic material suspended. Also, the rheology of the resin system is not significantly altered which would otherwise affect processing of the resins for their intended applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.