Optically clear abrasion resistant polymer-ceramic composite coatings
US6939908B1 · kind B1 · utility
8Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2002 |
| Grant date | Sep 6, 2005 |
| Priority date | — |
| Expiry date | Sep 16, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2003/2227
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A transparent and abrasion resistant coating which includes a transparent matrix, relatively large-sized abrasion resistant ceramic particles and nanosized ceramic particles for raising the index of refraction of the matrix to that of the abrasion resistant ceramic particles. The present coating provides a scratch resistant coatings for use on plastic substrates, which are needed in a variety of applications such as, high index ophthalmic and sportswear lenses, as well as automobile side windows and aircraft cockpit applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.