Patent ID: 7022746
Filing Date: 2006-04-04
Classification: C08G,Y10S

Abstract:
1. A reaction system for the preparation of a viscoelastic thermoset polyurethane material comprising: (a) an organic monomeric polyisocyanate composition having a number averaged functionality of organically bound isocyanate groups of from 2 to 3 and a total concentration of organically bound isocyanate groups of from 25 to 50% by weight; (b) an isocyanate reactive component comprising: (c) an optional surfactant; (d) a catalyst; and (e) an optional additive selected from the group consisting of dyes, pigments, internal mold release agents, physical blowing agents, chemical blowing agents, fire retardants, fillers, reinforcements, plasticizers, smoke suppressants, fragrances, antistatic agents, biocides, antioxidants, light stabilizers, adhesion promoters, and combinations of these; wherein the ratio of organically bound isocyanate groups to the total of isocyanate reactive groups in the reaction system varies from greater than 0.50 to 1.10.