| 摘要 |
The present invention relates to substantially solvent-free binder compositions containinga) a polyisocyanate component containing heteroallophanate groups and having aromatically-bound isocyanate groups,i) an NCO content of 3 to 16%,ii) an average functionality of 1.8 to 4,iii) an allophanate group content (calculated as C2N2O3, MW: 101) of 5 to 35% andiv) a hydrocarbon chain content of 10 to 65%, wherein the hydrocarbon chains are attached to allophanate groups via oxygen and have an average of 2 to 23 carbon atoms andb) an isocyanate-reactive component. The present invention also relates to the use of these binder compositions in one- and two-component coating compositions.
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