Pete,

I have written about this earlier. This is the "coming" new technology which still has a way to go.

As I said, I don't think that nano particles will give extreme durability but it will improve the micro scratching that makes waterborne finishes lose their sheen level quickly. There are many different minerals used so expect all kinds of claims of toughness. How they are incorporated into the product will make a difference in application and appearance.

These particles are so small they resemble "smoke" when added. more on this later.

As for warranties, don't believe any of them, neither finish ones or those for prefinished floor. The finish warranties will replace a gallon of finish "if" 10% of the floor wears through to bare wood. That is 10 sq. ft. in a 10X10 room. The warranty is "void" if you do not recoat the floor per the maintenance instructions when the finish loses its sheen. Catch 22. You can't win. Marketing hype.

Try every new product that comes along and decide for yourself what works for you and what you don't like. Nothing like hands on testing.

Bill