Patent ID: 7875675

Claim:
A resin precursor composition for use in the production of composite components comprising: a mold release material; a filler material; an isocyanate component comprising a material selected from the group consisting of diphenylmethane diisocyanate, a polymeric isomer of diphenylmethane diisocyanate, and combinations thereof; and a blend of three polyether polyols, each of the polyols having a functionality of three in an amount such that the ratio of the isocyanate component to the polyol blend is between approximately 80% and 115% of stoichiometric, the polyether blend comprising: (a) between approximately 20% and 50% of a first polyol having a molecular weight of between approximately 600 and 800; (b) between approximately 20% and 40% of a second polyol having a molecular weight of between approximately 200 and 300; and (c) between approximately 20% and 50% of a third polyol having a molecular weight of between approximately 100 and 300.