Solvent-free two-component polyurethane reactive adhesive and its sandwich sandwich panel

摘要

The present invention relates to A) a polyisocyanate component based on diphenylmethane diisocyanate, B) a water-containing polyol component having up to three OH groups, having a water content of 0.25 to 2.0% by weight and an OH value of 300 to 600, and C) any A component and component (A) and component (B) relate to a solvent-free, two-component polyurethane reactive adhesive which is present at a rate such that the isocyanate index is from 120 to 250. These adhesives are used to make sandwich inner panels for automobiles.