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US 2014/0004595 A1Published application
Ligand graft functionalized substrates
Assignee3M Innovative Properties Company
InventorsKannan Seshadri, Jerald K. Rasmussen, Clinton P. Waller, Jr., Douglas E. Weiss, Yi He
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Abstract
Polyethyleneimine and polyalkylene biguanide ligand functionalized substrates, methods of making ligand functionalized substrates, and methods of using functionalized substrates are disclosed.
Claims19
A filter element comprising one or more layers of a porous, ligand functionalized substrate and extending from the surfaces thereof free-radically grafted biguanide ligand groups to form a free-radically-grafted substrate, wherein the free-radically grafted substrate is of the formula:
- Substrate˜(Mligand)m, where Substrate represents the thermoplastic substrate, Mligand represents a polymerized grafted ethylenically unsaturated monomer having pendant biguanide ligand groups, and m is at least two.
Dependencies are inferred from the claim text.