Abstract: Polyol premixes are described that are suitable for use in the preparation of polyurethane foam-forming reaction mixtures. These foam-forming reaction mixtures can produce closed-celled polyurethane foams exhibit a low level of water absorption. Also described are various uses of such reaction mixtures, including injecting the reaction mixture beneath at least a portion of an earth-supported structure and allowing the polyurethane foam-forming reaction mixture to react and form a closed-celled, rigid polyurethane foam beneath the earth-supported structure.

Abstract: Disclosed are coated particles. The coated particles include substrate particles and a coating disposed over at least a portion of the substrate particles. The coating includes a condensation reaction product of a reaction mixture that includes a liquid isocyanate-functional component and an isocyanate-reactive composition. Also disclosed are methods for making such particles and methods for using such particles as proppants in hydraulic fracturing.

Abstract: Disclosed are coated particles. The coated particles include substrate particles and a coating disposed over at least a portion of the substrate particles. The coating includes a condensation reaction product of a reaction mixture that includes a liquid isocyanate-functional component and an isocyanate-reactive composition. Also disclosed are methods for making such particles and methods for using such particles as proppants in hydraulic fracturing.

Abstract: Disclosed are coated particles. The coated particles include substrate particles and a coating disposed over at least a portion of the substrate particles. The coating includes a condensation reaction product of a reaction mixture that includes a liquid isocyanate-functional component and an isocyanate-reactive composition. Also disclosed are methods for making such particles and methods for using such particles as proppants in hydraulic fracturing.

Abstract: Disclosed are coated particles. The coated particles include substrate particles and a coating disposed over at least a portion of the substrate particles. The coating includes a condensation reaction product of a reaction mixture that includes a liquid isocyanate-functional component and an isocyanate-reactive composition. Also disclosed are methods for making such particles and methods for using such particles as proppants in hydraulic fracturing.

Abstract: Disclosed are coated particles. The coated particles include substrate particles and a coating disposed over at least a portion of the substrate particles. The coating includes a condensation reaction product of a reaction mixture that includes a liquid isocyanate-functional component and an isocyanate-reactive composition. Also disclosed are methods for making such particles and methods for using such particles as proppants in hydraulic fracturing.

Abstract: Disclosed are coated particles. The coated particles include substrate particles and a coating disposed over at least a portion of the substrate particles. The coating includes a condensation reaction product of a reaction mixture that includes a liquid isocyanate-functional component and an isocyanate-reactive composition. Also disclosed are methods for making such particles and methods for using such particles as proppants in hydraulic fracturing.

Abstract: Polyurethane composites to which paint will adhere without the need for an aggressive pretreatment are produced by a pultrusion process using a polyurethane-forming system that includes a polyisocyanate component containing at least one polyisocyanate and an isocyanate-reactive component containing at least one cashew oil-based polyether polyol.

Abstract: Clear polyurethane fiber reinforced composites are produced by a pultrusion process with a polyurethane-forming system that includes: (a) a clear, aliphatic polyisocyanate having a viscosity at 25° C. of no more than 1000 centipoise, (b) a colorless polyol component comprising an amine-initiated polyol having a molecular weight of from about 150 to about 400 and an OH functionality greater than or equal to 3, and (c) a catalyst. These fiber-reinforced composites are characterized by both excellent weathering characteristics and excellent physical properties.

Abstract: Disclosed are filament winding processes that use a low viscosity polyurethane-forming composition, systems for making a composites and the composites so made.

Abstract: Disclosed are free-flowing particles. These free-flowing particles include: (a) a rubber particle, and (b) a coating deposited over at least a portion of the rubber particle, wherein the coating includes: (1) a polyurethane-urea resin that is a reaction product of a reaction mixture comprising: (i) a polyol having a number average molecular weight of 1800 to 12,000; (ii) an aromatic diamine; (iii) a polyisocyanate; and (iv) a catalyst for the reaction between hydroxyl groups and isocyanate groups; and (2) a solid particle anti-clumping agent. Also disclosed are methods of making and using such free-flowing particles and synthetic turf structures that include an infill of such free-flowing particles.

Abstract: Clear polyurethane fiber reinforced composites are produced by a pultrusion process with a polyurethane-forming system that includes: (a) a clear, aliphatic polyisocyanate having a viscosity at 25° C. of no more than 1000 centipoise, (b) a colorless polyol component comprising an amine-initiated polyol having a molecular weight of from about 150 to about 400 and an OH functionality greater than or equal to 3, and (c) a catalyst. These fiber-reinforced composites are characterized by both excellent weathering characteristics and excellent physical properties.

Abstract: Disclosed are free-flowing particles. These free-flowing particles include: (a) a rubber particle, and (b) a coating deposited over at least a portion of the rubber particle, wherein the coating includes: (1) a polyurethane-urea resin that is a reaction product of a reaction mixture comprising: (i) a polyol having a number average molecular weight of 1800 to 12,000; (ii) an aromatic diamine; (iii) a polyisocyanate; and (iv) a catalyst for the reaction between hydroxyl groups and isocyanate groups; and (2) a solid particle anti-clumping agent. Also disclosed are methods of making and using such free-flowing particles and synthetic turf structures that include an infill of such free-flowing particles.

Abstract: Disclosed are filament winding processes that use a low viscosity polyurethane-forming composition, systems for making a composites and the composites so made.

Abstract: Polyurethane composites to which paint will adhere without the need for an aggressive pretreatment are produced by a pultrusion process using a polyurethane-forming system that includes a polyisocyanate component containing at least one polyisocyanate and an isocyanate-reactive component containing at least one cashew oil-based polyether polyol.

Abstract: Clear polyurethane fiber reinforced composites are produced by a pultrusion process with a polyurethane-forming system that includes: (a) a clear, aliphatic polyisocyanate having a viscosity at 25° C. of no more than 1000 centipoise, (b) a colorless polyol component comprising an amine-initiated polyol having a molecular weight of from about 150 to about 400 and an OH functionality greater than or equal to 3, and (c) a catalyst. These fiber-reinforced composites are characterized by both excellent weathering characteristics and excellent physical properties.

Abstract: This invention relates to solid elastomers which exhibit reduced dimensional shrinkage, and to a process for the production of these elastomers. These elastomers comprise the reaction product of a polyisocyanate component or prepolymer, with an isocyanate-reactive component comprising a high molecular weight component having an EO cap having less than 17% by wt., a chain extender and optionally, a crosslinker, in the presence of at least one catalysts. These solid elastomers are produced via the reaction injection molding process in a closed mold, preferably at an isocyanate index of about 70 to about 130.

Abstract: This invention relates to polyurethane elastomers and to a process for their production. These elastomers comprise the reaction product of a (cyclo)aliphatic isocyanate component having an NCO group content of about 20 to about 45%, with an isocyanate-reactive component comprising one or more polyether polyols which is free of amine groups, and a low molecular weight organic compound containing two hydroxyl groups and which is free of amine groups, in the presence of one or more catalysts.

Abstract: This invention relates to a process for the production of a polyurethane elastomer by reacting a reaction mixture comprising (A) an isocyanate-reactive component having a molecular weight of 400 to 12,000, a functionality of about 2 to about 8 and being capped with 13 to 21% by weight of ethylene oxide, wherein the isocyanate-reactive groups are hydroxyl groups, amine groups or mixtures thereof; (B) an isocyanate-reactive component comprising (1) an isocyanate-reactive component containing at least two hydroxyl groups and having a molecular weight of from 62 to 399, and (2) an isocyanate-reactive component selected from the group consisting of (a) an isocyanate-reactive group containing tertiary amine polyether corresponding to a specific formula, (b) at least one organic amine compound containing at least two amine groups which are reactive with isocyanate groups; (C) potassium halide; (D) an internal mold release agent; (E) at least one catalyst, and (F) a polyisocyanate component.

Abstract: Products having improved green strength, improved physical properties and improved thermal properties are prepared via the RIM process using a reaction mixture containing an isocyanate, a specific low molecular weight diol or triol, and a specified amine terminated material.