Abstract: Non-slip properties are imparted to molded plastic articles by adhering a layer of latex or a latex-impregnated sheet material onto the surface of the molded article. Preferably, the latex layer is applied prior to thermoset curing of the molded article and is adhered to the thermoset article during the curing process. The plastic may be reinforced, and the latex is preferably an acrylic latex impregnated into a sheet material such as cloth or paper.

Abstract: A liquid-filled polyurethane elastomer gel is fabricated from water, organic glycol and a polyisocyanate prepolymer. The prepolymer is formed from organic di-isocyanate and organic diol or triol having a molecular weight of 3,000 to 10,000 and containing at least 40 percent by weight ethylene oxide adducts. The prepolymer is mixed with 3 to 20 times its weight of aqueous reactant including 25 to 65 percent by weight water and 75 to 35 percent by weight organic polyol. The resulting stable gel contains aqueous solutions or emulsions dispersed therein as small droplets comprising 75 to 95 percent of the weight of the resulting article. The liquid-filled polyurethane elastomer gel can be cast into shapes or can be formed into globs of random shape.

Abstract: Glass fiber reinforced plastic laminates including randomly oriented glass fibers, embedded within unsaturated polyester resins, are provided over at least one surface thereof with a gel coat, essentially free of the glass fibers. The gel coat is formed from resins which are polymerizable in the presence of ultraviolet radiation. The gel coat is at least partially cured on a transparent carrier film by exposing gel coat resins to ultraviolet radiation. Thereafter randomly oriented glass fibers and unsaturated polyester resin syrup are applied onto the gel coat to form the resulting laminate. The gel coat is selected to provide superior weathering characteristics and resistance to deterioration from ultraviolet radiation exposure, e.g., sunlight, when compared to the corresponding properties of the unsaturated polyester resin in which the randomly oriented glass fibers are embedded.

Abstract: Glass fiber reinforced plastic laminates including randomly oriented glass fibers, embedded within unsaturated polyester resins, are provided over at least one surface thereof with a gel coat, essentially free of the glass fibers. The gel coat is formed from resins which are polymerizable in the presence of ultraviolet radiation. The gel coat is at least partially cured on a transparent carrier film by exposing gel coat resins to ultraviolet radiation. Thereafter randomly oriented glass fibers and unsaturated polyester resin syrup are applied onto the gel coat to form the resulting laminate. The gel coat is selected to provide superior weathering characteristics and resistance to deterioration from ultra-violet radiation exposure, e.g., sunlight, when compared to the corresponding properties of the unsaturated polyester resin in which the randomly oriented glass fibers are embedded.

Abstract: Lightweight glass fiber reinforced plastic articles are produced in matched dies by combining fibrous reinforcing materials, such as glass fibers, with a foamable unsaturated polyester resin composition. The matched dies are closed and compressed so that the resin composition fills the mold cavity and wets the fibrous reinforcing material. Thereafter the matched dies are separated to increase the volume of the mold cavity by at least 50 percent greater than the closed volume. The matched dies are retained in this relationship until the unsaturated polyester resin composition has cured and expanded to fill the mold cavity. The resulting product has a density less than 67 percent of the density of a corresponding reinforced plastic article fabricated from the same composition (unsaturated polyester resin, fillers and reinforcement), which is not foamed. The unsaturated polyester resin composition preferably includes 0.

Abstract: Laminates of reinforced plastics and copper foil are prepared with a small quantity of benzotriazole in the plastic ingredient. The resulting laminate has excellent bond between the plastic and the copper foil and hence can be employed as an electrical circuit board.

Abstract: A liquid-filled polyurethane elastomer gel is fabricated from water, organic glycol and a polyisocyanate prepolymer. The prepolymer is formed from organic diisocyanate and organic diol or triol having a molecular weight of 3,000 to 10,000 and containing at least 40 percent by weight ethylene oxide adducts. The prepolymer is mixed with 3 to 20 times its weight of aqueous reactant including 25 to 65 percent by weight water and 75 to 35 percent by weight organic polyol. The resulting stable gel contains aqueous solutions of emulsions dispersed therein as small droplets comprising 75 to 95 percent of the weight of the resulting article. The liquid-filled polyurethane elastomer gel can be cast into shapes or can be formed into globs of random shape.