Thin film composite membrane prepared by suspension deposition
US5030355A · kind A · utility
10Cited by
1References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 27, 1989 |
| Grant date | Jul 9, 1991 |
| Priority date | — |
| Expiry date | Jun 27, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G31/11
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Thin film membranes of polyurea, polyureapolyurethane alloy, polyurea-polyurea/urethane alloy or polyurea/urethane are prepared by deposition of a thin film of suspension of the selected polymer on a thick permeable support layer by the technique of preparing a suspension of the selected polymer in a solvent which does not dissolve the thick permeable support layer and permitting the solvent to evaporate and/or permeate through the thick-permeable layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.