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US 4,906,379 AGranted
Hydrophilic article and method of producing same
AssigneeMembrex, Inc.
InventorsLeonard T. Hodgins, Edgar Samuelson
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AssigneeMembrex, Inc.
InventorsLeonard T. Hodgins, Edgar Samuelson
Estimating the term…
This invention provides a matrix comprising molecules of a suitable polymer which provides solely on the surface of the matrix sufficient uncharged substituted amide groups to render the surface hydrophilic. The invention also provides an article of manufacture comprising the matrix. Another aspect of the invention provides a method of producing a matrix having a hydrophilic surface which comprises treating molecules of a suitable polymer so as to provide solely on the surface of the matrix sufficient uncharged, hydrophilic substituted amide groups to render the surface hydrophilic. Another embodiment of the invention concerns improved methods of filtration, ultrafiltration, microfiltration, reverse osmosis, dialysis, prevaporation, sieving, affinity chromatography, affinity purification, affinity separation, or affinity adsorption which comprises using the article of manufacture.
A matrix comprising molecules of a nitrile-containing polymer which provides solely on the surface of the matrix sufficient uncharged, substituted amide groups to render the surface hydrophilic.
A matrix comprising molecules of a nitrile-containing polymer having reactive pendent groups which provides solely on the surface of the matrix sufficient uncharged, hydrophilic polar groups to render the surface hydrophilic, the polar groups having been obtained by derivatization of the reactive pendent groups of the polymer.
A method of producing a matrix having a hydrophilic surface which comprises treating molecules of a nitrile-containing polymer so as to provide solely on the surface of the matrix sufficient uncharged substituted amide groups to render the surface hydrophilic.
A method of claim wherein the substituted amide groups comprises N-methylolamide groups.
A method of producing a modified article which comprises forming an article in which at least a portion of the exterior of the article comprises molecules of a nitrile-containing polymer and treating the article so formed so as to provide solely on the exterior of the article sufficient uncharged substituted amide groups to render the exterior hydrophilic.
Dependencies are inferred from the claim text.