Optical recording medium
US4576896A · kind A · utility
10Cited by
0References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1984 |
| Grant date | Mar 18, 1986 |
| Priority date | — |
| Expiry date | Oct 23, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31515
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An optical recording medium comprising a transparent substrate of a synthetic resin and an information recording layer provided thereon, on which medium information can be optically written, read and erased by means of a laser light, wherein said transparent substrate consists essentially of a cast-cured product of an epoxy resin composition comprising an alicyclic epoxy resin, or a mixture of a major amount of an alicyclic epoxy resin and a minor amount of an aromatic epoxy resin, an organic polybasic acid anhydride, a curing-accelerator and an anti-discoloring agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.