Coated porous materials
US5989698A · kind A · utility
18Cited by
25References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1997 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Feb 10, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/263
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Coated porous materials that exhibit air permeability and repellency to liquids having a surface tension at least equal to or greater than 20 dynes/cm which are suitable for making ileostomy vent filters, transdermal drug substrates, agricultural and medical apparel, as well as paint and chemical protective garments. The coating for the porous material is applied as a curable composition containing fluorocarbon urethane precursors which are cross-linked in situ.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.