Retortable containers with exterior modified polystyrene cap layer
US4798750A · kind A · utility
2Cited by
6References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1987 |
| Grant date | Jan 17, 1989 |
| Priority date | — |
| Expiry date | Oct 29, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A multilayer structure and container formed therefrom is disclosed which comprises a layer of a polystyrene polymer modified with a carboxylic acid or carboxylic anhydride and a layer of an ethylene vinyl alcohol copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.