Film having low permeability to hydrocarbons
US6087020A · kind A · utility
5Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1997 |
| Grant date | Jul 11, 2000 |
| Priority date | — |
| Expiry date | Jan 22, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31757
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention provides a film having low permeability to hydrocarbons comprising at least one layer (i) formed of a polyamide/polyolefin alloy having a polyamide matrix and at least one layer (ii) formed of a polyolefin. The invention also provides a release film for a sheet molding compound consisting of said film, as well as a packaging for expandable polystyrene formed of said film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.