Ethylenically unsaturated monomer solutions containing urylated linear polyester/polyurethane resins

摘要

Ethylenically unsaturated monomer solutions are thickened to moldable gels by the formation of homogeneous urylene-linked linear saturated polyester/polyurethane resin mixtures. These are made by the addition of certain diamines to monomer solutions containing isocyanate terminated polyester/polyurethane resins. These gels exhibit improved laminar flow characteristics at moderate molding temperatures and pressures and retain these flow characteristics even when they contain as high as 80 percent concentrations of a filler such as 1-inch fiber glass filaments.