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Process for the production of highly permeable composite coated hollow fiber membranes.
Process for the production of highly permeable composite coated hollow fiber membranes.
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机译:制备高渗透性复合涂层中空纤维膜的方法。
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摘要
The present invention is a process for applying a highly permeable coating on a hollow fiber substrate. The hollow fiber substrate is continuously passed through a polymeric coating solution and withdrawn from the solution through a coating die to form a uniform polymeric solution coating on the outer surface of the hollow fiber. A portion of the solvent from the coating is allowed to evaporate thereby forming a thin, dense surface layer after which the remaining solvent from the coating layer is leached out. The resultant material is a highly permeable, coated composite hollow fiber membrane which can be used in gas and/or liquid separations.
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