Solvent-free two component polyurethane reactive adhesives and their use for producing sandwich-type interior panelling for vehicles

摘要

Solvent-free, two-component polyurethane reaction adhesives, comprising 1.) a water-containing polyol component, 2.) a polyisocyanate component based on diphenyl methane diisocyanates, and optionally 3.) auxiliaries and additives are characterised in that a) the polyol component 1.) contains a maximum of three OH groups and has a water content of from 0.25 to 2.0% by weight and an OH number of 300-600, and b) component 1) and component 2) are present in a mixing ratio such that the isocyanate characteristic number is from 120 to 250. They are used for the production of sandwich-like internal panelling for motor vehicles.