ETCH RESITANT CLEARCOAT

摘要

A crosslinked coating composition formed from polyurethane polyols and blocked or unblocked polyisocyanates. The polyisocyanates, in particular, comprise at least bis(isocyanatomethyl) cyclohexane. The coating is substantially free from ester functionality that forms a contiguous part of the network backbone. A clearcoat formed from the described components and having a majority of urethane bonds is very resistant to environmental etch damage.