Patent ID: 9567447
Date: 2017-02-14
CPC Classifications: A61P,B05D,B29C,C08B,C08J,C08L,Y10T

Claim:
1. A method of producing an outer layer having an entanglement comprising a hydrophobic porous polymeric host structure and a hydrophilic guest having hydrophilic groups, wherein said guest comprises hyaluronic acid, the method comprising the steps of: temporarily cloaking at least a portion of the hydrophilic groups of the hydrophilic guest to yield a cloaked hydrophilic guest; intermingling at least a portion of said cloaked hydrophilic guest with the hydrophobic porous polymeric host structure by diffusing the cloaked hydrophilic guest into a plurality of pores of the porous polymeric host structure, wherein the hydrophobic porous polymeric host structure comprises a hydrophobic polymer host comprising a water-insoluble hydrocarbon-based polymer; within said pores, crosslinking at least a portion of molecules of the hydrophilic guest with the guest; and removing the temporary cloaking to produce a hydrophilic outer surface of the outer layer.