Covalently bonded coatings
First Claim
1. A method of producing a hydrophilic coating covalently linked to a hydrophobic surface of a polymer, the method comprising the steps of:
- a) providing a high surface area polymer having a hydrophobic surface comprising unsaturated groups;
b) providing a first compound, free of poly(glycidyl methacrylate), comprising a hydrophobic domain covalently and flexibly bonded to a hydrophilic domain, the hydrophobic domain comprising an unsaturated group;
c) contacting the hydrophobic surface with a liquid phase, hydrophilic with respect to the surface, containing solvated molecules of the first compound, thereby to deposit molecules of the compound on the hydrophobic surface oriented with the hydrophobic domains proximate to and adsorbed on the surface and with the hydrophilic domains extending outwardly from the surface into the liquid phase; and
d) covalently crosslinking the unsaturated group on the hydrophobic domain of molecules of the first compound to the unsaturated groups on the hydrophobic surface to produce a hydrophilic coating covalently bound to the surface of the polymer, wherein the hydrophilic domains present in the coating substantially shield the hydrophobic surface of the polymer.
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Accused Products
Abstract
Disclosed are hydrophilic coatings covalently bound to hydrophobic surfaces as well as methods for their production. To form the coated surfaces, a compound is provided which comprises a hydrophobic domain including an unsaturated group and a hydrophilic domain. Also provided is a hydrophobic surface comprising unsaturated groups. Molecules of the compound are adsorbed onto the hydrophobic surface, and the unsaturated groups in the hydrophobic domains of molecules of the compound then are covalently crosslinked to the unsaturated groups on the hydrophobic surface by a free radical reaction. In one embodiment, hydrophilic coatings may be covalently attached to hydrophobic polymers such as divinylbenzene crosslinked polystyrene. Hydrophilic coatings covalently attached to hydrophobic surfaces are obtained which are stable, which may be readily derivatized, and which are useful in a wide range of chromatography applications.
62 Citations
31 Claims
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1. A method of producing a hydrophilic coating covalently linked to a hydrophobic surface of a polymer, the method comprising the steps of:
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a) providing a high surface area polymer having a hydrophobic surface comprising unsaturated groups; b) providing a first compound, free of poly(glycidyl methacrylate), comprising a hydrophobic domain covalently and flexibly bonded to a hydrophilic domain, the hydrophobic domain comprising an unsaturated group; c) contacting the hydrophobic surface with a liquid phase, hydrophilic with respect to the surface, containing solvated molecules of the first compound, thereby to deposit molecules of the compound on the hydrophobic surface oriented with the hydrophobic domains proximate to and adsorbed on the surface and with the hydrophilic domains extending outwardly from the surface into the liquid phase; and d) covalently crosslinking the unsaturated group on the hydrophobic domain of molecules of the first compound to the unsaturated groups on the hydrophobic surface to produce a hydrophilic coating covalently bound to the surface of the polymer, wherein the hydrophilic domains present in the coating substantially shield the hydrophobic surface of the polymer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of producing a hydrophilic coating covalently attached to a hydrophobic surface of a polymer, the method comprising the steps of:
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a) providing a high surface area polymer having a hydrophobic surface comprising unsaturated groups; b) providing a first compound, free of methacrylic acid, comprising a hydrophobic domain covalently and flexibly bonded to a hydrophilic domain, the hydrophobic domain comprising an unsaturated group; c) contacting the hydrophobic surface with a liquid phase, hydrophilic with respect to the surface, containing solvated molecules of the first compound, thereby to deposit molecules of the compound on the hydrophobic surface oriented with the hydrophobic domains proximate to and adsorbed on the surface and with the hydrophilic domains extending outwardly from the surface into the liquid phase; and d) covalently crosslinking the unsaturated group on on the hydrophobic domain of molecules of the first compound to the unsaturated groups on the hydrophobic surface by a free radical reaction to produce a hydrophilic coating covalently bound to the surface of the polymer, wherein the hydrophilic domains present in the coating substantially shield the hydrophobic surface of the polymer. - View Dependent Claims (17, 18, 19, 20, 21)
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22. A hydrophilic material useful in contact with a protein solution to inhibit denaturation thereof, said material comprising a high surface area polymer having a hydrophobic surface, and a hydrophilic coating, covalently bound to said hydrophobic surface, said hydrophilic material being formed by the process of:
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a) providing a high surface area polymer having a hydrophobic surface comprising unsaturated groups, and a compound, free of poly(glycidyl methacrylate), or free of methacrylic acid, comprising a hydrophobic domain covalently and flexibly bonded to a hydrophilic domain, the hydrophobic domain comprising an unsaturated group; b) contacting the hydrophobic surface with a liquid phase, hydrophilic with respect to the surface, containing solvated molecules of the compound, thereby to deposit molecules of the compound on the hydrophobic surface oriented with the hydrophobic domains proximate to and adsorbed on the surface and with the hydrophilic domains extending outwardly from the surface into the liquid phase; and c) covalently crosslinking the unsaturated group on on the hydrophobic domain of molecules of the compound to the unsaturated groups on the hydrophobic surface by a free radical reaction to produce a hydrophilic coating covalently bound to the surface of the polymer. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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29. A hydrophilic material useful in contact with a protein solution to inhibit denaturation thereof, said material comprising:
a hydrophobic surface enveloped by a hydrophilic coating, covalently bound to said surface, said coating comprising a fimbriate structure comprising a multiplicity of elongate polymer chains extending from said surface and comprising plural hydrophilic groups, said chains being present at a surface density sufficient effectively to mask said hydrophobic surface and substantially to eliminate hydrophobic interaction between a said protein solution and areas of said hydrophobic surface. - View Dependent Claims (30, 31)
Specification