Composite membrane with coating comprising polyalkylene oxide and biguanide-type compounds
US8733558B2 · kind B2 · utility
4Cited by
25References
12Claims
0Family size
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Key dates
| Filing date | Feb 23, 2011 |
| Grant date | May 27, 2014 |
| Priority date | — |
| Expiry date | Jan 6, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D71/56
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Composite membranes including a coating of polyalkylene oxide and biguanide compounds along with various methods for making and using the same. In one embodiment, the composite membrane comprises a thin film polyamide layer including a coating of a reaction product of a polyalkylene oxide compound and a biguanide-type compound. In another embodiment, the coating comprises a polymer including alkylene oxide repeating units and one or more biguanide functional groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.