Patent ID: 6784219
Filing Date: 2004-08-31
Classification: C08G

Abstract:
A molded or cast article capable of withstanding high mechanical stress produced from a cellular polyurethane elastomer having a density within the range of from about 0.2 to about 1.1 g/cm3 which comprises a reaction product of:a) from about 85 to about 90 wt. %, based on the total weight of the reaction product, of at least one higher molecular weight polyhydroxyl compound having an average molecular weight of from 500 to 6,000 and a functionality of at least 2; b) from about 10 to about 25 wt. %, based on the total weight of the reaction product, of 2,3,5,6-tetramethyl-1,4-diisocyanatobenzene; and c) from about 0.2 to about 10 wt. %, based on the total weight of the reaction product, of at least one low molecular weight chain-lengthening and/or crosslinking agent having at least two hydroxyl groups and an average molecular weight of from 60 to 800, with the proviso that the at least one chain-lengthening and/or crosslinking agent may not be water.