Composition
US5194474A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1990 |
| Grant date | Mar 16, 1993 |
| Priority date | — |
| Expiry date | Feb 27, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31928
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Provided are compositions comprising a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 20 to 80 mol % and a saponification degree of vinyl acetate component of at least 95 mol %, said composition containing 20 to 200 ppm as converted to alkali metal of an alkali metal acetate, 30 to 250 ppm of acetic acid, and 5 to 500 ppm as converted to phosphate ion of phosphoric acid or an alkali metal hydrogenphosphate, and having a content ratio of acetic acid/alkali metal acetate of 0.1 to 1 and the flow characteristic that the extrusion rate does not substantially increase for at least 10 hours in the relationship between the heating time and the extrusion rate with a capillary rheometer (Koka Flow Tester) at at least one temperature 10.degree. to 80.degree. C. above the melting point. Also provided are multilayered containers comprising as the innermost layer a layer formed by the use of the above composition, and packages comprising such containers containing a liquid article or paste article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.