[k_gitnos]

Hello,

I'm not sure if this is the right part of the forum to post this.

I am working on a solventborne 2K PU primer which cures very fast. When I apply a full system, I mean Primer + Basecoat (SB or WB) + solventborne 2K PU clearcoat, the latter layer seems to die back (or pulls in). I know for sure that this is caused by the primer. I just don't know what it may causes it. The resin that I use is a hydroxyl polyol having >3% of OH.

Any ideas on this would be real helpful.

Thank you in advance.