Waterproof, moisture vapor permeable polyurethane urea polymer comprising polycaprolactone and polydimethyl siloxane soft segments
US5461122A · kind A · utility
38Cited by
3References
2Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 15, 1994 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | Sep 15, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2738
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A water vapor-permeable, waterproof linear polyurethane-urea polymer consisting of at least four soft segments: polytetramethylene oxide, polyethyleneoxide and polycaprolactone-polydimethylsiloxane-polycaprolactone. The soft segments are linked together with a diisocyanate and chain extended with a diamine. The polymer is utilized to coat various textile materials. The compositions of the polymer as well as various methods of coating the textile materials are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.