Hard coat film
US7141298B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2003 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Jun 2, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31797
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A hard coat film comprises a hard coat layer formed by coating at least one face of a substrate with a coating fluid and curing the obtained coating layer by irradiation with an ionizing radiation. The coating fluid comprises a component for forming a hard coat layer comprising (A) a compound which is formed by bonding an organic compound having a polymerizable unsaturated group to fine particles of silica, (B) an ester of (meth)acrylic acid having an alicyclic structure and (C) a compound having at least two polymerizable unsaturated groups and at least one aryl group in a molecule. The hard coat layer comprises 20 to 60% by weight of silica and has a refractive index of 1.53 or greater. The hard coat film exhibits excellent scratch resistance, little shrinking by curing and little shrinking and curling under high temperature and humidity and forms no optical interference fringes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.