Laminated resilient flexible barrier membranes
US6620472B1 · kind B1 · utility
22Cited by
71References
30Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 19, 1996 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Jul 19, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31587
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to laminated membranes formed by multi-layer processing techniques including alternating layers of thermoplastic urethane and a copolymer of ethylene and vinyl alcohol. The membranes are characterized in that hydrogen bonds are formed between the layers of thermoplastic urethane and the copolymer of ethylene and vinyl alcohol. The membranes are characterized in that hydrogen bonds are formed between the layers of thermoplastic urethane and the copolymer of ethylene and vinyl alcohol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.