| 摘要 |
Use of a solvent-free two-component polyurethane-reactive system from (A1) a hydroxyl (OH) and ether group containing component, (A2) hydroxy-functional polyether polyacrylates, and (A3) other hydroxy-functional compounds, (B) a polyisocyanate component comprising at least one organic polyisocyanate, where the NCO:OH equivalent ratio is 0.8:1 to 1.5:1, for the preparation of coatings of long term heat resistance up to 90 deg C and cathodic protection compatible coatings is new. Use of a solvent-free two-component polyurethane-reactive system from (wt.%): (A1) an OH and ether group containing component of functionality /-3.5 of molecular weight 280-1000 or a mixture of many such components (40-100), (A2) hydroxy-functional polyether polyacrylates (0-60), and (A3) other hydroxy-functional compounds (0-60), where the wt.% quantities of (A1) to (A3) add up to 100 wt%., (B) a polyisocyanate component comprising at least one organic polyisocyanate, where the NCO:OH equivalent ratio is 0.8:1 to 1.5:1, for the preparation of coatings of long term heat resistance up to 90 deg C and cathodic protection compatible coatings.
|
