| abstract |
The invention relates to a polyisocyanate composition, containing compounds having isocyanate groups with at least one 1,5-bridging pentamethylene unit and an isocyanurate group, wherein a portion of the compounds additionally has at least one allophanate group, characterised in that the polyisocyanate composition has an isocyanurate trimer content of ≤ 59 wt.% in relation to the total weight of the polyisocyante composition, the allophanate groups carry a group that is organic and inert relative to isocyante groups, and the allophanate groups are present in an equivalent ratio of > 0 and ≤ 0.19 in relation to the isocyanurate groups. The invention also relates to a method for producing the polyisocyante, a two-component system, the use thereof for the production of a coating on a substrate, the coating and the composite formed by the coating and the substrate. |