Adhesive for optical disk
US5698285A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 16, 1996 |
| Grant date | Dec 16, 1997 |
| Priority date | — |
| Expiry date | Oct 16, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/26
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An adhesive for use in producing an optical disk comprising two transparent substrates bonded to each other with a photocurable adhesive at respective bonding surfaces thereof and having an information recording layer formed on one or both of the bonding surfaces is disclosed, which is a composition comprising ingredient (A) shown below and a photopolymerization initiator comprising ingredient (B) and/or ingredient (C) shown below: (A) a radical-polymerizable vinyl compound, (B) an acylphosphine oxide compound represented by the general formula ##STR1## and (C) an .alpha.-aminoacetophenone compound represented by the following formula. ##STR2## With this adhesive, optical disk substrates having an extremely low light transmittance can be easily bonded to each other in a short time period without impairing their appearance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.