Coated media for chromatography
First Claim
1. A method of producing a hydrophilic coating on a hydrophobic surface comprising the steps of:
- contacting said hydrophobic surface with a liquid phase, hydrophilic with respect to said surface, containing a solvated compound, molecules of said solvated compound comprising a hydrophobic domain covalently and flexibly bonded to a hydrophilic domain, and a crosslinkable site, thereby to deposit molecules of said compound on said hydrophobic surface whereby said molecules of said compound are oriented with said hydrophobic domains proximate to and adsorbed on said hydrophobic surface and with said hydrophilic domains extending outwardly from said hydrophobic surface into said liquid phase; and
crosslinking molecules adjacent one another at said crosslinkable sites to produce an adherent film on said surface.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed are pellicular materials useful in contact with proteins and as chromatography media. Rigid, inert, hydrophobic, polymeric materials are exposed to a solution comprising a solute defining plural interspersed hydrophobic and hydrophilic domains. The solute molecules adsorb onto the surface of the substrate by hydrophobic - hydrophobic interaction with their hydrophilic domains extending outwardly away from the surface into the solution. The molecules are then crosslinked in place to produce a solvent and pH resistant coating which presents a hydrophilic surface sufficient to mask hydrophobic regions therebeneath. The multidomain adsorbing compounds may comprise reactive groups which subsequently can be derivatized using conventional techniques to produce chromatography materials useful for conducting affinity, size exclusion, cationic exchange, anionic exchange, neutral hydrophobic interaction, and other forms of chromatographic separations.
-
Citations
26 Claims
-
1. A method of producing a hydrophilic coating on a hydrophobic surface comprising the steps of:
-
contacting said hydrophobic surface with a liquid phase, hydrophilic with respect to said surface, containing a solvated compound, molecules of said solvated compound comprising a hydrophobic domain covalently and flexibly bonded to a hydrophilic domain, and a crosslinkable site, thereby to deposit molecules of said compound on said hydrophobic surface whereby said molecules of said compound are oriented with said hydrophobic domains proximate to and adsorbed on said hydrophobic surface and with said hydrophilic domains extending outwardly from said hydrophobic surface into said liquid phase; and crosslinking molecules adjacent one another at said crosslinkable sites to produce an adherent film on said surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
- 20. Hydrophilic material useful in contact with a protein solution to inhibit denaturation comprising a hydrophobic substrate and, adhered thereto by hydrophobic interaction, an enveloping, continuous film, the individual interaction an enveloping, continuous film, the individual molecules of said film comprising a hydrophobic domain covalently and flexibly bonded to a hydrophilic domain, and a crosslinkable site, wherein such molecules are adsorbed onto said surface by hydrophobic-hydrophobic interaction and said hydrophilic domain are disposed outwardly therefrom, said individual molecules being crosslinked at said crosslinkable site.
Specification