Gas resistant foam materials
US4045609A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 7, 1976 |
| Grant date | Aug 30, 1977 |
| Priority date | — |
| Expiry date | Apr 7, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/469
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Laminated fabric materials which are resistant to the passage of noxious chemicals in the form of liquids and condensible vapors and gases, but which are relatively permeable to air and water vapor, are described. Said laminated materials comprise (a) an air and water vaporpermeable open cell solid resin foam resistant to passage therethrough of noxious chemicals in liquid or vapor form, said foam having dispersed therein a particulate adsorbent material for said noxious chemicals, said particulate adsorbent material being bonded in said foam by an organic binder which is substantially free from substances which substantially deactivate the adsorbent; and (b) an air and water vapor-permeable fabric backing to which the aforesaid foam is bonded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.