Hard coat film and method for producing same
US11718721B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Jan 23, 2019 |
| Grant date | Aug 8, 2023 |
| Priority date | — |
| Expiry date | Jan 23, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2433/04
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A hard coat film having excellent adhesion (particularly adhesion over time) to a hard coat layer when a cycloolefin polymer film is used as a base material. The hard coat film comprises a hard coat layer containing an ionizing radiation curable resin laminated on at least one surface of a cycloolefin polymer base film via a primer layer. The primer layer has an arithmetic average surface roughness (Ra) in the range of 0.5 nm to 15.0 nm, and a surface of the primer layer has a static friction coefficient in the range of 0.6 to 2.0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.