Ion-exchanged abrasion resistant coatings
US5035745A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1990 |
| Grant date | Jul 30, 1991 |
| Priority date | — |
| Expiry date | Jun 29, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D183/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An abrasion resistant and ultraviolet radiation resistant coating is disclosed comprising an inorganic oxide matrix formed by the hydrolysis and condensation of an alkoxysilane and/or other metal alkoxide, further comprising cerium oxide for ultraviolet radiation resistant and/or silica for improved abrasion resistance. A partially hydrolyzed silane sol containing colloidal cerium oxide is ion-exchange with an anion exchange resin in one embodiment. In another a partially hydrolyzed silane sol containing colloidal silica is ion-exchanged to remove sodium ions prior to adding the colloidal ceria resulting in improved properties in the coating composition and resultant coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.