Gramophone record composition
US4283315A · kind A · utility
5Cited by
9References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1979 |
| Grant date | Aug 11, 1981 |
| Priority date | — |
| Expiry date | Nov 6, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S260/15
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Gramophone records are prepared from a vinyl polymer composition containing a fatty acid soap of an alkaline earth metal or zinc, sugar or polyol fatty acid esters and fatty acid mixed glycerides and is free of heavy metal ions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.