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US 2011/0033633 A1Published application
Method of making ligand functionalized substrates
Assignee3M Innovative Properties Company
InventorsCatherine A. Bothof, Yi He, Jerald K. Rasmussen, Kannan Seshadri, Clinton P. Waller, JR., Douglas E. Weiss
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Abstract
Ligand functionalized substrates, methods of making ligand functionalized substrates, and methods of using functionalized substrates are disclosed.
Claims20
A method of making a ligand functionalized substrate, the method comprises the steps of:
- 1) providing a base substrate;
- 2) coating the substrate with a solution comprising (a) at least one grafting monomer having an acryloyl group and a photoinitiator group;
- (b) one or more ligand monomers of the formula:
- wherein
- R1 is H or C1-C4 alkyl,
- R2 is a divalent alkylene optionally containing an ester, amide, urethane or urea linking group;
- each R3 is independently H or C1-C4 alkyl,
- R4 is H, C1-C4 alkyl or —N(R3)2;
- and
- X1 is —O— or —NR3, (c) optionally one or more monomers having at least one acryloyl group and at least one additional ethylenically unsaturated, free-radically polymerizable group;
- and (d) optionally one or more hydrophilic monomers:
- 3) exposing the coated base substrate to ionizing radiation to form a first functionalized substrate comprising grafted photoinitiator group attached to the surface of the base substrate, and
- 4) exposing the base substrate comprising grafted photoinitiator groups to UV radiation to crosslink they remaining ethylenically unsaturated, free-radically polymerizable groups.
10 more elements
Ligand monomers of the formula:
- where
- R1 is H or C1-C4 alkyl,
- each R3 is independently H or C1-C4 alkyl,
- R4 is H, C1-C4 alkyl or —N(R3)2,
- X1 is —O— or —NR3—, where R3 is H or C1-C4 alkyl,
- R7 and R8 are each independently is C1 to C10 alkylene;
- and
- Z is an ester, amide, urea, or urethane group.
5 more elements
Dependencies are inferred from the claim text.