Mixtures, for polyurethane adhesives, which consist of polyols and/or polyamines and polyisocyanates, are liquid at room temperature, have a long shelf life and can be activated by heat

Abstract

Mixtures which are liquid at room temperature, have a long shelf life and can be activated by heat and which comprise (A) polyols and/or polyamines, component (A) having a viscosity of less than 100 Pa.s at room temperature, the OH number being less than 112 and the mean functionality of the starting materials being from 1.1 to 6, and (B) polyisocyanates which are dispersed in (A), are stabilized to (A) as a result of a phase-separating deactivation at the surface of the dispersed particles, and are present in an amount such that there are from 0.1 to 2 equivalents of the total isocyanate present in the polyisocyanate per equivalent of hydroxyl or amino groups of component (A), are particularly useful for contact adhesives.

Dependencies are inferred from the claim text.