[EN] TWO-COMPONENT SYSTEM FOR ELASTIC COATINGS<br/>[FR] SYSTÈME À DEUX CONSTITUANTS POUR REVÊTEMENTS ÉLASTIQUES
申请人:COVESTRO DEUTSCHLAND AG
公开号:WO2019061019A1
公开(公告)日:2019-04-04
Provided is a two-component system comprising: a component A) comprising at least one polymeric polyol which has an OH content of ≤4.5wt%, based on the total solids content of the polymeric polyol, and a component B) comprising at least one polyisocyanate which has an average isocyanate group functionality of ≥4.0 to ≤10.0, based on the total solids content of the polyisocyanate, a fraction of ≤25wt% of oligomers containing isocyanate groups and having a number-average molecular weight of ≤780g/mol, based on the total solids content of the polyisocyanate, and an isocyanurate group fraction of ≥5mol% to ≤70mol%, based on the total amount of isocyanurate groups and allophanate groups in the polyisocyanate. Further provided are a method for producing a coating on a substrate, the coating obtained by the method, and the coated substrate.