Reactive single-component coating and/or adhesive granulate

Isocyanate-based reactive one-component granules for use as a one-component coating-material and/or adhesive granules, said reactive one-component granules being in a storage stable form comprising:

• (i) 2 to 30% by weight based on the total weight of the granules 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 granules of at least one isocyanate-reactive polymer,
• (iii) 5 to 30% by weight based on the total weight of the granules 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 said granules comprise an excess of isocyanate, with the proviso that the amount of free NCO-groups is in the range of from 0.5 to 30% by weight based on the total weight of the granules.

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,
• (b) melting of the constituents (i) to (iii) of said mixture or heating of the constituents (i) to (iii) of said mixture until brought into a fluid state, and
• (c) extruding said melted or fluid-state mixture through an opening in a die plate into water to form an extruded mass, chopping said extruded mass into granules, removing said granules from said water and removing residual water from said granules by evacuation.

Storage stable isocyanate-based reactive one-component granules for use as a one-component coating-material and/or adhesive granules, said reactive one-component granules made by a process comprising:

• (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,
• (b) melting of the constituents (i) to (iii) of said mixture or heating of the constituents (i) to (iii) of said mixture until brought into a fluid state, and
• (c) extruding said melted or fluid-state mixture through an opening in a die plate into water to form an extruded mass, chopping said extruded mass into granules, removing said granules from said water and removing residual water from said granules by evacuation.