Patent ID: 7977424

Claim:
A polymer concrete composition comprising: a cured polyurethane resin formed as a reaction product from a reaction mixture comprising at least one vegetable oil-based polyol, at least one isocyanate having at least two isocyanate moieties per molecule, and a crosslinker comprising glycerine, said glycerine being present in an amount ranging from 5 parts per hundred to 30 parts per hundred by weight of said at least one vegetable oil-based polyol; and an aggregate composition bonded to the cured polyurethane resin, the aggregate composition being present in an amount ranging from 70% to 90% by weight of the polymer concrete composition, wherein said at least one vegetable oil-based polyol is prepared by: (a) adding a peroxyacid to vegetable oil, wherein said peroxyacid and said vegetable oil react to form an epoxidized vegetable oil, and (b) adding said epoxidized vegetable oil from step (a) to a mixture comprising an alcohol, water, and fluoboric acid, wherein said epoxidized vegetable oil reacts with said mixture to form said at least one vegetable oil-based polyol.