Patent ID: 8232364

Claim:
A gel mass comprising a reaction product obtained from a reaction mixture comprising one or more NCO prepolymers and one or more polyols, wherein a) said one or more NCO prepolymers comprise the reaction products of one or more polyisocyanates having a functionality of 2.1 to 5, with one or more polyoxyalkylenediol monoalkyl ethers having a molecular weight of 1000 to 18,000, wherein the ratio of NCO groups to OH groups is between 2:1 and 8.1, and b) said one or more polyols have a mean hydroxyl number of from 6 to 112 and a functionality of from 3 to 8, and wherein the isocyanate index of said reaction mixture is in the range of from 15 to 60, and wherein said gel mass has a property of deforming from an initial state under pressure of a deforming force, and of returning to said initial state after said deforming force is removed.