| abstract |
The present disclosure provides a solvent based system for forming an n-acyl urea coating on a substrate. In one embodiment, the solvent based system comprises a polycarbodiimide-polyurethane composite. The solvent-based system also includes an acid functional polymer and an organic solvent, and includes 10% or less water by weight based on the total weight of the solvent-based system. The solvent-based system also includes less than about 100 parts by weight toluene diisocyanate per million parts by weight of the solvent-based system. |