| abstract |
A two part construction sealant or adhesive is provided with the properties of non-sag, low modulus, high elongation, and good paint adhesion. The sealant or adhesive is prepared using at least one of a secondary amine or an acrylate monomer, and a diol, triol and/or tetrol having a nominal weight average molecular weight of between 1,000 and 6,000 in the base component of the formulation, and aromatic diisocyanate monomer or polyisocyanate and an isocyanate terminated prepolymer of aromatic diisocyanate or polyisocyanate and polyol in the activator component, the components of Part A to Part B mixed at a weight ratio of 5:1 to 1.8:1. |