Multi-layer films with syndiotactic barrier layer containing a wax
US6159612A · kind A · utility
7Cited by
15References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1997 |
| Grant date | Dec 12, 2000 |
| Priority date | — |
| Expiry date | Aug 25, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An oriented multi-layer film comprises: PA1 (a) at least one layer comprising an olefin polymer, for example, isotactic polypropylene; and PA1 (b) a barrier layer adjacent the at least one layer of (a), comprising a syndiotactic polypropylene which preferably possesses an isotacticity of less than 25%, more preferably less than 15%, in particular less than 6%, and moisture and oxygen permeability reducing amounts of wax.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.