Composite article having hydrophilic properties and method of manufacture
US7665615B2 · kind B2 · utility
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30References
21Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 30, 2005 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Oct 12, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2325/36
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A composite article includes a base material and a porous membrane laminated with the base material. The porous membrane has hydrophobic properties and includes at least one of expanded polytetrafluoroethylene, woven polytetrafluoroethylene, and non woven polytetrafluoroethylene. A coating layer is formed on at least a portion of the porous membrane. The coating layer has hydrophilic properties and includes at least one of an organofunctional siloxane and a polyether urethane polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.