| 摘要 |
<p>Unsaturated polyesters made from A) at least one alpha , beta -monoolefinically unsaturated dicarboxylic acid and/or polycarboxylic acid which is free from polymerizable aliphatic multiple bonds, B) at least one polyhydric alcohol, C) at least one co-condensable acrylic compound and D) at least one polycyclic compound which has a norbornane structure and is bonded via a functional group in the series consisting of carboxyl, hydroxyl and primary amino groups or via a majority of only similar functional groups from this series, are employed as binders in binder systems for the production of radiation-curable coatings, adhesives, knifing fillers or preferably printing inks. The printing inks produced using the binders have a good shelf life and a high curing rate on irradiation, which gives, for example, drying rates of greater than 400 m/min, the prints produced having high gloss and colour density (ink density, saturation). The unsaturated polyesters are prepared by reacting components A), B) and D) with one another in a first step, giving a polyester resin containing hydroxyl groups or carboxyl groups, and then reacting the functional groups thereof with component C), co-condensible acrylic compounds, in a second step.</p> |
