Abstract: The present invention is a polyurethane foam comprising the reaction product of a first reactant comprised of a polyisocyanate having an average isocyanate functionality of at least 2 and a second reactant comprised of a low molecular weight compound that has at least two to, at most, three groups containing an active hydrogen and water, wherein the reaction product is formed essentially in the absence of a cross-linking polyol and the polyurethane foam is substantially rigid. The invention is also a method of forming the polyurethane foam by contacting the first and second reactant for a time and temperature sufficient to form the foam.

Abstract: Polyurethane foams containing a syntactic phase and a cellular, non-syntactic phase are useful as reinforcing foams, such as in automotive applications. The foams are conveniently made in the reaction of a high viscosity isocyanate-reactive component and a high-viscosity polyisocyanate component, at least one of which contains a plurality of hollow microspheres.

Abstract: Polyurethane foams containing a syntactic phase and a cellular, non-syntactic phase are useful as reinforcing foams, such as in automotive applications. The foams are conveniently made in the reaction of a high viscosity isocyanate-reactive component and a high-viscosity polyisocyanate component, at least one of which contains a plurality of hollow microspheres.

Abstract: Polyurethane foams containing a syntactic phase and a cellular, non-syntactic phase are useful as reinforcing foams, such as in automotive applications. The foams are conveniently made in the reaction of a high viscosity isocyanate-reactive component and a high-viscosity polyisocyanate component, at least one of which contains a plurality of hollow microspheres.

Abstract: A method and apparatus for dispensing multi-component foamable fluid plastic materials such as polyurethane foams. The apparatus includes a mixing chamber defined by an axial passage in a support body structure. The mixing chamber receives reactant fluids for mixing then allows the fluids to exit through an opening at one end of the axial passage. Two fluid inlet openings in a wall of the axial passage admit reactant fluid into the mixing chamber. Two mixing chamber fluid inlets formed in the support body structure communicate reactant fluid sources with the mixing chamber through the inlet openings. When retracted, a valve needle in the axial passage exposes the inlet openings to admit reactant fluids into the mixing chamber. When advanced, the needle closes off the inlet openings and pushes the mixed fluids from the mixing chamber. The valve needle includes three parallel helical grooves that help purge the mixing chamber of unreacted and reacted fluids.

Abstract: Flexible polyurethane foams are prepared from poly(propylene oxide) polymers having low levels of monofunctional impurities. The resulting foam has improved processing characteristics and compression set.

Abstract: Internal mold release compositions suitable for use in preparing polyurethane and polyurea moldings comprise a tertiary amine compound, a metal salt of a carboxylic acid, amidocarboxylic acid, phosphorus-containing acid or boron-containing acid. The metal is from Group IA, IB, IIA, or IIB metal or aluminum, chromium, molybdenum, iron, cobalt, nickel, tin, lead, antimony or bismuth.

Abstract: Internal mold release compositions suitable for use in preparing polyurethane and polyurea moldings comprise a tertiary amine compound, a metal salt of a carboxylic acid, amidocarboxylic acid, phosphorus-containing acid or boron-containing acid. The metal is from Group IA, IB, IIA, or IIB metal or aluminum, chromium, molybdenum, iron, cobalt, nickel, tin, lead, antimony or bismuth.