Polysilazane-derived coating for glass containers
US10227160B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2013 |
| Grant date | Mar 12, 2019 |
| Priority date | — |
| Expiry date | Feb 15, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C17/27
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A glass container and a process for forming an inorganic silica coating on an exterior surface of the glass container to improve one or more surface characteristics of the glass container. A sol-gel solution including a polysilazane and an organic solvent is applied to the exterior surface of the glass container to form a sol-gel coating thereon. The glass container and the sol-gel coating are then exposed to a water vapor-containing environment and heated at a temperature of between 150 degrees Celsius and 600 degrees Celsius to transform the sol-gel coating into an inorganic silica coating. The as-formed silica coating has a hardness of greater than 8.5 GPa and is bonded to the exterior surface of the glass container through a plurality of siloxane bonds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.