Method for producing and using storage-stable, latent-reactive layers or powders of surface-deactivated, solid polyisocyanates and dispersion polymers with functional groups

Abstract From the Canadian patent

The invention relates to methods for producing storage-stable latent-reactive , layers and powders of surface-deactivated solid polyisocyanates and , dispersions or aqueous solutions of isocyanate reactive polymers which can be , used as adhesives and coverings. Said dispersions suspensions or aqueous , solutions can be applied to a substrate in an appropriate form. Water can then be eliminated at a temperature inferior to the reaction temperature of the isocyanates and this operation can take place at a temperature above the softening temperature of the polymers. This process produces at ambient , temperature, dry and substantially water free layers which are storage stable and can …