Substrate for digital versatile disk and process for producing the same
US6316071A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1999 |
| Grant date | Nov 13, 2001 |
| Priority date | — |
| Expiry date | Aug 23, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/21
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A digital versatile disk (DVD) excellent in transferability on injection molding, and excellent in releasability from a mold and in strength is provided. The substrate of the digital versatile disk (DVD) comprises an aromatic polycarbonate resin composition containing a fatty acid monoglyceride having from 14 to 30 carbon atoms in an amount of from 0.015 to 0.05% by weight, wherein the aromatic polycarbonate resin contains an end group, 30% by mol or more of which is a p-cumylphenoxy group and/or a p-tert-octylphenoxy group, and has a viscosity average molecular weight (Mv) of from 10,000 to 17,000. The thickness of the substrate is generally 0.6 mm or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.