On Thursday, 18 February 2016 16:48:19 UTC+2, wrote:
My paint supplier told me there were much cheaper urethane paints available, so I sent a note to PPG. Told them we loved Concept, but it was getting hard to get (in my county) and very expensive. Asked if other urethane paints would be a suitable substitute for Concept? Got a nice reply that stater poly-urethane paints would become brittle with age. Concept is acrylic-urethane (not poly-urethane) and remains slightly flexible throughout its life span.
JJ


When you guys mention polyurethane are you referring to acrylic or polyester?

From what I've read regarding automotive 2K paints, you get polyurethane with acrylic polyols or polyester polyols.
So it's actually acrylic polyurethane or polyester polyurethane.

I am aware one also get's acrylic urethane which is more elastic than acrylic or polyester based polyurethanes.