As others have said, not really. You are up against the inevitable toll of the reaction between the coating and air. You could store your gear in a vacuum (not one of those bags you compress with a vacuum cleaner, but a true vacuum) or a nitrogen filled container and that probably would work. Not terribly practical, but urethane deteriorates over time and I have yet to hear about a solution.
_________________________
Don't get me started, you know how I get.