Ink composition for forming thin film
US5628820A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1995 |
| Grant date | May 13, 1997 |
| Priority date | — |
| Expiry date | Jun 20, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C8/16
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An ink composition for forming a thin metal oxide film contains a glass-forming component, a solvent and 10-25 wt % of a viscosity-increasing agent. The glass-forming component is one of a halogen-containing metal alkoxide, a mixture of the halogen-containing metal alkoxide and another metal alkoxide, and a mixture of the halogen-containing metal alkoxide and a metal oxide sol. The viscosity-increasing agent is at least one selected from the group consisting of nitrocellulose H7, nitrocellulose H20, nitrocellulose H60. nitrocellulose H80 and nitrocellulose H120, each of which is according to Japanese Industrial Standard K 6703. The solvent is at least one selected from the group consisting of ethylcarbitol and butylcarbitol. The ink composition has a viscosity within a range from 200 to 300 poises. The thus prepared ink composition is prolonged in pot life. The thin metal oxide film prepared from the ink composition has a refractive index substantially the same as the theoretical value and is colorless, uniform in thickness, and excellent in optical characteristics, abrasion resistance, scratch resistance and durability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.