Patent ID: 8415411

Claim:
A casting formulation comprising a filler composition and a resin system, said filler composition comprising: a plurality of particles; castor oil, wherein said castor oil is present at about 1 weight percent based upon the weight of said resin system; a silicone glycol copolymer, wherein said silicone glycol copolymer is present at between 0.25 weight percent to 1 weight percent based upon the weight of said resin system; and said resin system comprising between 55 to 70 volume percent of the casting formulation; said filler composition comprising between 30 volume percent to 45 volume percent of said casting formulation; and wherein said resin system and filler composition are mixed to form a reaction mixture, with the reaction mixture entraining ambient air to produce a high viscosity, liquid foam; the presence of the castor oil resulting in generation of said foam; the presence of the silicone glycol copolymer stabilizing said foam.