Method of making conductive, water and/or alcohol repellent nonwoven fabric and resulting product
US5151321A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1987 |
| Grant date | Sep 29, 1992 |
| Priority date | — |
| Expiry date | Mar 2, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/681
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Improved treatment, composition and method of obtaining a naturally hydrophobic nonwoven web with desired conductivity and/or water repellency, and alcohol repellency. To obtain conductivity, the web is contacted with a composition containing an oxygen or nitrogen rich compound such as ethers, acids or alcohols and especially polymers thereof such as polyethers, and polyacids having an affinity for the substrate. In a further preferred embodiment alcohol repellency is obtained by subsequent or simultaneous contact of the treated web under appropriate pH conditions with a fluorocarbon-containing composition. The result is a conductive material satisfying anti-static requirements for surgical room use and still maintaining desirable water and alcohol repellent properties. Preferred embodiments include treatment with compounds having both moieties as part of the molecule producing a combination of both desired effects. Materials produced in accordance with the invention find applications where ever it is necessary that conductivity eliminate static and that water repellency be achieved. In particular, the materials are useful for surgical applications as gowns, drapes, and the like. S…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.