Non-crackling, antistatic polyurethane film with high breathability and its use
US5908690A · kind A · utility
6Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1996 |
| Grant date | Jun 1, 1999 |
| Priority date | — |
| Expiry date | Sep 23, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31551
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A waterproof and, at the same time, breathable and antistatic film produced without a support by extrusion, the film having a DIN friction coefficient of less than 0.8 and consisting of thermoplastic polyurethane elastomer resins with a melt flow rate, as measured at 190.degree. C. under a load of 10 kg, of at most 70, the soft segment of the elastomer resins consisting of polyethylene oxide and/or containing ethylene oxide reaction products and the relative percentage by weight of the soft segment in the polyurethane resin being between 35% by weight and 60% by weight, based on the total weight of the polyurethane used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.