| 摘要 |
<p>Thermosetting hot melt coating composition with a binder comprising: a. 40 - 95 %, preferably 50 - 90 %, by total resin weight of at least one amorphous resin; b. 5 - 60 %, preferably 10 - 50 %, by total resin weight of at least one semi-crystalline resin, e.g. a polyester, and/or one or more crystalline resins, such as urethane polyols or amide polyols. Internally blocked isocyanates are preferred cross-linkers. The composition comprises at least one non-polymeric crosslink enhancer having two or more functional groups capable of reacting with the functional groups of the crosslinker and/or one or more of the used resins. Pigments may be dispersed in at least one of the semi-crystalline and/or crystalline resins, before the amorphous resin is blended with the semi-crystalline and/or crystalline resins.</p> |
