Abstract: Polyurethane foam products with controlled release of agents and additives, if any, are formed from the reaction products of an aqueous formulation of a limited quantity of superabsorbent polymer, an agent or agents from the group of detergents, abrasives, waxes, polishes, drugs, cosmetics, biologicals, volatiles, odor absorbing and controlling compositions and water soluble chemicals, optionally selective additives, and water with a predetermined ratio of hydrophilic urethane prepolymer to provide a polymerizing mixture. The agents and additives, if any, are incorporated directly into the matrix of the formed foam product to increase the number of times that the formed foam products can be used. The products and methods include a formed foam product with an abrasive material uniformly dispersed therein and/or formed on at least one exterior face of the products. Sized granular formed foam product can be comminuted to provide filters materials and animal litter.

Abstract: Granulated hydrophilic urethane polymer foam products with controlled release or contact of agents and additives, formed from the reaction product of an aqueous formulation comprising limited quantities of an absorbent polymer, an agent or additive from the group of detergents, soaps, abrasives, waxes, polishes, drugs, cosmetics, biologicals, volatiles, chemicals, water emulsions, water mixture with solid particles and optionally selective additives with adequate water and a predetermined ratio of hydrophilic urethane prepolymer to provide the polymerized solid. The agents and additives if any, are homogenously incorporated strands, fibers and intercellular structures of the matrix for the formed urethane polymer foam product to materially increase mass transfer between the agents and additives and a target in the effluent. The hydrophilic urethane polymer will allow intimate contact between agent/additive and effluent target.

Abstract: Urethane polymer foam products with controlled release of agents are formed from the reaction products of an aqueous formulation of a limited quantity of superabsorbent polymer, an agent or agents from the group of detergents, abrasives, waxes, polishes, drugs, cosmetics, biologicals, volatiles, odor absorbing compositions, water soluble chemicals and optionally additives, and water in a predetermined ratio with hydrophilic urethane prepolymer to provide a polymerizing mixture. The agents, and additives if any, are incorporated directly into the matrix of the formed foam to increase the number of times that the formed foam products can be used. The products include hose with an abrasive material uniformly dispersed therein and/or formed on at least one exterior face of the products, and the methods include the formulating and making of the formed foam products with uniformly dispersed abrasive materials and/or with abrasive materials on at least one exterior face.

Abstract: Polyurethane foam products with controlled release of agents and additives, if any, are formed from the reaction products of an aqueous formulation of a limited quantity of superabsorbent polymer, an agent or agents from the group of detergents, abrasives, waxes, polishes, drugs, cosmetics, biologicals, volatiles, odor absorbing and controlling compositions and water soluble chemicals, optionally selective additives, and water with a predetermined ratio of hydrophilic urethane prepolymer to provide a polymerizing mixture. The agents and additives, if any, are incorporated directly into the matrix of the formed foam product to increase the number of times that the formed foam products can be used. The products and methods include a formed foam product with an abrasive material uniformly dispersed therein and/or formed on at least one exterior face of the products. Sized granular formed foam product can be comminuted to provide filters materials and animal litter.

Abstract: Layered composite materials adapted to be formed into predetermined shaped components disposed for contact with moisture and body fluids having a cover layer for contact with the moisture and body fluids and a foam layer including one or more sorbents in a hydrophilic polyurethane foam matrix, wherein the foam layer is bonded to the cover layer so that moisture and body fluids in contact with the cover layer are transferred through the cover layer to the foam layer. The foam layer is established by combining an aqueous mixture including the sorbent in a predetermined ratio with the hydrophilic polyurethane. The foam layer may include other active ingredients such as odor absorption and bactericidal components, thermal phase change components and finely ground rubber tire materials to vary the characteristics of the composite material.

Abstract: Layered composite materials adapted to be formed into predetermined shaped components disposed for contact with moisture and body fluids having a cover layer for contact with the moisture and body fluids and a foam layer including one or more sorbents in a hydrophilic polyurethane foam matrix, wherein the foam layer is bonded to the cover layer so that moisture and body fluids in contact with the cover layer are transferred through the cover layer to the foam layer. The foam layer is established by combining an aqueous mixture including the sorbent in a predetermined ratio with the hydrophilic polyurethane. The foam layer may include other active ingredients such as odor absorption and bactericidal components, thermal phase change components and finely ground rubber tire materials to vary the characteristics of the composite material.

Abstract: Solid particles are coated with a polymer coating, by a process that includes, dispersing the uncoated particles in water, containing a wetting agent, adding a liquid polymer coupling agent, so that the dispersed solid particles have a film of the coupling agent, and agitating the mixture while adding a prepolymer. The coupling agent is reacted with the polymer to form polymer coatings on the dispersed particles. Relatively thin polymer coatings can be achieved by this process. As an extension of the process, the core particles can be materials used for abrasive blast cleaning, filtration, separation catalysis, animal feed, drug dispensing, contacting, tumble cleaning, and slow release of active ingredients.

Abstract: Particles of abrasives such as Garnet, Staurolite or Wollastonite bound to polymer are used as propellant particles to remove undesired materials from surfaces such as floors, walls, ceilings, machinery etc. For example, soil, paint, oil, grease etc. can be thereby removed.

Abstract: A durable hydrophilic substantially non-linting water absorbent drapable composite material useful as wound dressing comprises cellulose fibers coated with hydrophilic polymer. The cellulose fibers may be open weave cotton gauze. The hydrophilic polymer may comprise a polyurethane foam prepolymer, such as a toluene diisocyanate terminated polyethylene glycol, optimally containing a surfactant. Alternatively, the polymer may comprise a polyethylene oxide, a carboxymethyl cellulose, or a polyvinylpyrrolidone. The water to prepolymer weight ratio of the polyurethane embodiment preferably is within the range of from about 6:1 to about 400:1. The hydrophilic polymer may be a polyethylene oxide carboxymethyl cellulose mixture.

Abstract: A new composite material of an open foam substrate and bonded micropackaged active ingredient particles is generated by foam polymerization of a prepolymer phase and an aqueous phase. The foam substrate is an open cell foam for dispensing active ingredient liquids or solids released from the particles. The particles of micropackaged active ingredient liquids or solids are formed with frangible containment walls for breaking and releasing the active ingredient in response to defined stress. The aqueous phase is a pourable and flowable slurry mixture of an aqueous liquid carrier such as water, micropackaged active ingredient particles in the range of 1%-60% by weight of the aqueous phase, and surfactant wetting agent for adjusting the surface tension of the aqueous phase to produce an open cell foam upon polymerization with the prepolymer phase. The prepolymer phase is a hydrophilic polyurethane prepolymer receptive to the aqueous phase for foam polymerization upon mixing.

Abstract: A new composite material of an open foam substrate and bonded micropackaged active ingredient particles is generated by foam polymerization of a prepolymer phase and an aqueous phase. The foam substrate is an open cell foam for dispensing active ingredient liquids or solids released from the particles. The particles of micropackaged active ingredient liquids or solids are formed with frangible containment walls for breaking and releasing the active ingredient in response to defined stress. The micropackaged active ingredient particles are approximately 400 to 5,000 microns in diameter. The aqueous phase is a pourable and flowable slurry mixture of an aqueous liquid carrier such as water, micropackaged active ingredient particles in the range of 1%-60% by weight of the aqueous phase, and surfactant wetting agent for adjusting the surface tension of the aqueous phase to produce an open cell foam upon polymerization with the prepolymer phase.

Abstract: Apparatus for continuously and rapidly forming trays of highly uniform elastomeric soil plugs comprises means for continuously mixing a water-containing soil slurry with a water-reactive pre-polymer compound, means for supplying the soil slurry and the pre-polymer compound to the mixing means at respective controlled rates, and means for delivering the mixed soil slurry and pre-polymer compound to a dispensing station for dispensing into mold receptacles; the receptacles are disposed in a closed path and carried by transport means seriatim past the dispensing station. Releasable bias means biases a tray mold member against a base mold member within each receptacle so as to extrude soil-pre-polymer mixture into plug-molding cavities of the tray mold member. The bias means is released after the plugs within the tray mold member have cured.

Abstract: A dispenser for mixing and dispensing two reactive fluids, such as a resin and a hardener. The dispenser is comprised of two rugged chambers, each filled with one of the fluids and having a piston movable through the operable length of its chamber to force the fluids out through exit ports in said chamber directly into a mixer which mixes the fluids in a complete and highly ordered manner. The chambers are provided with common means to move the pistons synchronously through the chambers whose cross sectional dimensions are predetermined to cause a predetermined volumetric ration of the fluids to be delivered to the mixer.