Patent ID: 8389624
Filing Date: 2013-03-05
Classification: C08K,C08L

Abstract:
1. A method for the preparation of an impact absorbing surface from a porous polymeric composition, comprising the steps of: (a) preparing a stable granulate intermediate by coating a quantity of particulate material selected from rubber granules and non-elastomeric particulate material, with from 1%-2% by weight of the composition of a stable liquid intermediate, said stable liquid intermediate selected from the group consisting of a polyol and a catalyst, and a polyol, a catalyst and water, (b) mixing the stable granulate intermediate of Step (a) with from 2% to 30% by weight of the composition of a moisture curing polyurethane based prepolymer to form an unset polymeric composition, (c) applying the unset polymeric composition to a substrate, and (d) curing the unset polymeric composition to form said impact absorbing surface, wherein tiles comprising an impact absorbing surface prepared from said porous polymeric composition exhibit ultimate tensile strength values in excess of 0.5 MPa, and % elongation to break values greater than 57%.