Cold adhesion promoter for wood glue - comprises soln of polybasic or unsatd carboxylic acid in water-miscible mono- or poly-hydric amine

摘要

Agent for improving the cold adhesion of wood glues consists of an opt. aq. soln. of a polybasic and/or olefinically unsatd. carboxylic acid (I) in a water-miscible mono-or poly-hydric amine (II) with pH 6.5-11, opt. after addn. of water. The amt. of (I) used pref. is 0.35-0.95 of the stoichiometric amt. w.r.t. (II). The agent pref. is liquid at room temp. It can be incorporated in the glue before use or applied separately to the parts to be glued. It is suitable for use in conjunction with glues based on thermo-setting resins (phenolic and aminoplastic) and polymer dispersions. The agent improves the cold adhesion, allowing cold-pressed parts to be moved on belt or roller conveyors, pallets etc.