Dynamic supported membrane assembly and method of making and using it
US5989432A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 1997 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Sep 5, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2311/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention provides a supported membrane assembly comprising a membrane adhered to a support material by way of a nonwoven web of multicomponent fibers therebetween, wherein the multicomponent fibers comprise a first polymer and a second polymer such that the second polymer is present on at least a portion of the surface of the multicomponent fibers and has a softening temperature below the softening temperatures of the first polymer, the membrane, and the support material, and the supported membrane assembly has a water flow rate at least about 20% of the water flow rate of the membrane alone. The present invention also provides a filter element comprising a housing and such a supported membrane assembly, as well as a method of preparing such a supported membrane assembly and methods of using such a supported membrane assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.