Composition, process for producing the same and multi-layer structure
US4792484A · kind A · utility
68Cited by
12References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 13, 1987 |
| Grant date | Dec 20, 1988 |
| Priority date | — |
| Expiry date | May 13, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/3192
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition comprising a matrix of an ethylene-vinyl alcohol copolymer having dispersed therein a granular drying agent in a particulate state, wherein the volume-area average diameter of the grains of drying agent having a long dia meter of not less than 10.mu. is not greater than 30.mu.. A multi-layer structure comprising layers of such a composition. The gas barrier property of the multi-layer structure is not substantially reduced after a retort treatment and thus, the multi-layer structure is extremely useful for packaging of food, especially packaging of retorted food.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.