Article with antifogging film and process for producing the same
US6800365B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2002 |
| Grant date | Oct 5, 2004 |
| Priority date | — |
| Expiry date | May 21, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31942
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An antifogging article includes a substrate and an antifogging film covering the substrate. This antifogging film contains a water-absorbing organic polymer and an inorganic substance and has a water repellent finishing on a surface of the antifogging film. Another antifogging article includes (1) a substrate, (2) a water-absorbing, antifogging film covering the substrate, and (3) a water-permeable, protective film covering the antifogging film. This antifogging film contains (a) a polyvinyl acetal resin having a degree of acetalization of not greater than 10 mol % and (b) a hydrolysate or partial hydrolysate of an alkylsilylisocyanate represented by the general formula R2nSiR14−n where R1 is an alkyl group having a carbon atom number of 1 or 2, R2 is an isocyanate group, and n is 1 or 2. These antifogging articles are superior in antifogging property and abrasion resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.