Patent ID: 7576158

Claim:
A process for preparing isocyanate-based reactive one-component storage-stable granules for use as a one-component coating-material or adhesive, the process comprising the following process steps: (a) preparing a mixture comprising: (i) 2 to 30% by weight based on the total weight of the mixture of at least one isocyanate selected from the group consisting of diisocyanates and polyisocyanates, (ii) 30 to 70% by weight based on the total weight of the mixture of at least one isocyanate-reactive polymer, (iii) 5 to 30% by weight based on the total weight of the mixture of at least one non-isocyanate-reactive wax, resin or polymer selected from the group consisting of ethylene/vinyl acetate polymers and copolymers, polyolefins, acrylates, methacrylates, and mixtures thereof, wherein preparing of the mixture is performed by melting of the constituents (i) to (iii) of said mixture or by heating of the constituents (i) to (iii) of said mixture until brought into a fluid state, and wherein preparing of the mixture is performed such that there exists an excess of isocyanate in the obtained mixture, with the proviso that the amount of free NCO groups in the mixture is in the range of from 0.5 to 30% by weight based on the total weight of the mixture; (b) preparing storage-stable granules starting from said mixture resulting from step (a); and storing, handling or packaging the granules for future use.