Barrier members including a barrier layer employing polyester polyols
US6203868A · kind A · utility
281Cited by
72References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1998 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Sep 23, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31931
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to barrier membranes including a barrier layer which includes one or more thermoplastic urethane formed from polyester polyols. More particularly, the membranes include a barrier layer including blends of one or more polyester polyol based thermoplastic urethanes and one or more copolymers of ethylene and vinyl alcohol. The barrier membranes can be employed in a variety of applications and can be used as either monolayers or multi-layered laminates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.