Abstract: A two roll impregnator for impregnating fiber reinforcement for use in filament winding operatives contains two abutting rolls, at least one and preferably both having an elastomeric surface. Resin is constrained within a bath whose lower surfaces are defined by the abutting rollers and side dams. Fiber reinforcement is drawn over a first roller through the resin bath and between the closed nip of the abutting rollers, where full impregnation is fostered, excess resin removed, and the impregnated fiber degassed. Substantially dripless operation can be maintained.

Abstract: Highly damage resistant fiber reinforced composites are prepared from polyurethane systems employing a highly hydrophobic polyol component and an isocyanate prepolymer, the combination having a combined functionality greater than 5. The polyurethane systems may be used for gel coats and matrix resins, and produce substantially no volatile emissions. The systems are particularly useful for boat hulls and like products.