Patent ID: 8092632
Filing Date: 2012-01-10
Classification: C08G,C08L,C09J,Y10T

Abstract:
1. A method for adhesive bonding of metal or plastics substrates, comprising: adhering contaminants are removed from the substrate, a two-component polyurethane adhesive is applied directly onto at least one substrate without applying a primer, and the substrates are fitted together and the assembly is cured, wherein the two-component polyurethane adhesive consists of a polyol component A, consisting of 1 to 98 wt. % of at least one oleochemical polyol 1 to 10 wt. % of at least one other tri-, tetra- or penta-functional polyol with a molar mass of 90 to 750 g/mol, 2.5 to 60 wt. % of at least one aldehyde, ketone or ketone/aldehyde resin with a molecular weight of 250 to 25000 g/mol, in each case relative to component A, and 0 to 70 wt. % of further auxiliary substances selected from fillers, pigments, leveling agents, deaerating agents, thixotroping agents, catalysts, antioxidants, UV stabilizers, dyes, solvents, wetting agents, bonding agents and plasticizers, wherein component A does not contain diols having a molecular weight below 300 g/mol; and a component B, containing at least one polyisocyanate, in which the NCO:OH ratio of the isocyanate component to the polyol component is between 1.0 and 2.0:1.