Abstract: The present invention is a one-part adhesive composition comprising:A) an isocyanate functional polyurethane prepolymer;B) a catalyst capable of catalyzing the reaction of isocyanate moieties with an isocyanate reactive compound;C) particles comprising a curing agent for an isocyanate functional. polyurethane prepolymer encapsulated within a coating material;wherein the prepolymer has a free isocyanate content of from about 0.8 to about 2.2 percent. In another embodiment the invention is a process for bonding two substrates together which comprises rupturing the encapsulated curing agent particles so as to contact the curing agent with the prepolymer in the adhesive composition, contacting the adhesive composition of the invention with at least one of the substrates and contacting the substrates together along the portion of the substrate(s) to which the adhesive has been applied before the adhesive applied cures and allowing the adhesive to cure and bond the substrates together.

Abstract: The invention is a process for bonding two substrates together which comprises contacting an adhesive composition comprising a polyurethane prepolymer comprising the reaction product of: A) a polyisocyanate; B) one or more compounds or polymers having isocyanate-reactive moieties; C) a dispersion triol containing from about 10 to about 60 percent by weight based on the dispersion of particles of an organic polymer which is nonreactive with the polyols and polyisocyanates having a particle size of from about 5 to about 50 microns; wherein the prepolymer has a free isocyanate content of from about 0.8 to about 2.2 percent; with at least one of the substrates and contacting the substrates together along the portion of the substrate(s) to which the adhesive has been applied before the adhesive applied cures and allowing the adhesive to cure and bond the substrates together.

Abstract: A polyisocyanate prepolymer composition is comprised of the reaction product of (a) a polyisocyanate having an average functionality of at least 2 and containing at least about 20 percent by weight of a diisocyanate monomer, (b) a monohydric alcohol and (c) a polyol having an average hydroxyl functionality of at least about 1.8 to at most about 3.2, wherein the prepolymer composition has (i) an amount of isocyanate groups by weight sufficient to react with water in the absence of a supplemental blowing agent to make a foam, (ii) at most about 10.0 percent by weight of the diisocyanate monomer and (iii) an amount of the polyisocyanate that is capped by the monohydric alcohol sufficient to prevent gelling of the prepolymer composition. The prepolymer composition may be formed by contacting (i) an organic polyisocyanate having an average isocyanate functionality of at least about 2.

Abstract: The present invention is a polyurethane prepolymer comprising the reaction product of: A) a polyisocyanate; B) one or more compounds or polymers having isocyanate-reactive moieties; C) a dispersion triol containing from about 10 to about 60 percent by weight based on the dispersion of particles of an organic polymer which is nonreactive with the polyols and polyisocyanates having a particle size of from about 5 to about 50 microns; wherein the prepolymer has a free isocyanate content of from about 0.8 to about 2.2 percent. In another embodiment the invention is a one-part adhesive composition comprising the polyurethane prepolymer of the invention and a catalyst capable of catalyzing the reaction of isocyanate moieties with water.

Abstract: A polyisocyanate prepolymer composition is comprised of the reaction product of (a) a polyisocyanate having an average functionality of at least 2 and containing at least about 20 percent by weight of a diisocyanate monomer, (b) a monohydric alcohol and (c) a polyol having an average hydroxyl functionality of at least about 1.8 to at most about 3.2 wherein the prepolymer composition has (i) an amount of isocyanate groups by weight sufficient to react with water in the absence of a supplemental blowing agent to make a foam, (ii) at most about 10.0 percent by weight of the diisocyanate monomer and (iii) an amount of the polyisocyanate that is capped by the monohydric alcohol sufficient to prevent gelling of the prepolymer composition. The prepolymer composition may be reacted with water to form a polyurethane foam.

Abstract: A method for making a one package heat curable (i.e. thermosetting) composition which, on heating, forms a urethane/epoxy/silicone interpenetrating polymer network (IPN) system; one package heat curable compositions made by such a method; metal reinforcing patches, directly adherent to an oily metal surface such as an oily steel surface, comprising a sheet-like carrier having thereon such a one package heat curable composition in combination with a filler admixed therewith, said filler possibly including magnetic particles; a method for reinforcing metal which comprises applying thereto such a metal reinforcing patch and curing said heat curable composition at an elevated temperature to form a urethane/epoxy/silicone interpenetrating polymer network.

Abstract: A moisture curable sealant having good stability in the absence of moisture and a rapid cure rate in the sole presence of atmospheric moisture, the sealant containing a polyurethane prepolymer having an isocyanate functionality between 2.3 and 3.0, an isocyanate content of about 1-4 percent by weight, and, admixed therewith as a catalyst, from 0.2 to 1.75 percent, by weight of the sealant, of dimorpholinodiethyl ether.

Abstract: A method for making a one package heat curable (i.e. thermosetting) composition which, on heating, forms a urethane/epoxy/silicone interpenetrating polymer network (IPN) system; one package heat curable compositions made by such a method; metal reinforcing patches, directly adherent to an oily metal surface such as an oily steel surface, comprising a sheet-like carrier having thereon such a one package heat curable composition in combination with a filler admixed therewith, said filler possibly including magnetic particles; a method for reinforcing metal which comprises applying thereto such a metal reinforcing patch and curing said heat curable composition at an elevated temperature to form a urethane/epoxy/silicone interpenetrating polymer network.

Abstract: A moisture curable sealant having good stability in the absence of moisture and a rapid cure rate in the sole presence of atmospheric moisture, said sealant comprising a polyurethane prepolymer having an isocyanate functionality between 2.3 and 3.0, and, admixed therewith as a catalyst, from 0.2 to 1.75 percent, by weight of said sealant, of dimorpholinodiethyl ether.

Abstract: Methods for bonding a material to a non-porous substrate such as glass using a moisture curable sealant composition comprising a filler and a polyurethane polymer having terminal isocyanate groups and pendant silane groups having at least one alkoxy group bonded to silicon.

Abstract: Methods for making a moisture curable polyurethane polymer having terminal isocyanate groups and pendant alkoxysilane groups by reacting an isocyanatosilane adduct, having terminal isocyanate groups and at least one hydrolyzable alkoxy group bonded to silicon, with a polyisocyanate and a polyol; moisture curable polymers made by said methods; sealant compositions directly adherent to a non-porous substrate such as glass or metal without the use of a primer, said compositions comprising such a moisture curable polymer in combination with a filler; and methods for curing and using such sealant compositions.

Abstract: A heat curable one package polyurethane resin composition adaptable to use for automotive seam sealing, particularly under high solids acrylic enamel paints, said composition comprising an isocyanate terminated polyurethane prepolymer the isocyanate groups of which are blocked by reaction with an oxime, and a curing agent having at least two active hydrogen atoms per molecule, such as a polyol, a polyamine, or a blocked polyamine.

Abstract: What are disclosed are a poly(meth)acrylate polymer having pendant hydrolyzable alkoxysilane groups thereon prepared by reacting a poly(meth)acrylate polymer having pendant hydroxy groups thereon with an isocyanato functional alkoxysilane having 1 to 3 hydrolyzable lower alkoxy groups present on the silicon atom thereof; a substrate such as glass or aluminum having a tenacious coating thereon of such a polymer alone or in admixture with another, different, resinous binder component; such a substrate further having a resinous sealant composition applied over said tenacious coating as a primer; and methods for making such a polymer and such coated substrates.

Abstract: What are disclosed are a poly(meth)acrylate polymer having pendant hydrolyzable alkoxysilane groups thereon prepared by reacting a poly(meth)acrylate polymer having pendant hydroxy groups thereon with an isocyanato functional alkoxysilane having 1 to 3 hydrolyzable lower alkoxy groups present on the silicon atom thereof; a substrate such as glass or aluminum having a tenacious coating thereon of such a polymer alone or in admixture with another, different, resinous binder component; such a substrate further having a resinous sealant composition applied over said tenacious coating as a primer; and methods for making such a polymer and such coated substrates.

Abstract: What are disclosed are a one pot moisture-curable two-component coating composition comprising a first component having at least one isocyanate group and at least one hydrolyzable alkoxysilane group therein and a second component having at least one oxazolidine group therein, methods of forming a tenacious coating therewith on non-porous substrates such as glass and of further applying a resinous sealant composition over such a tenacious coating used as a primer, and coated substrates having such a tenacious coating thereon without or with a further resinous sealant composition.

Abstract: What are disclosed are a "one pot" moisture-curable two-component coating composition comprising a first component having at least one isocyanate group and at least one hydrolyzable alkoxysilane group therein and a second component having at least one oxazolidine group therein, methods of forming a tenacious coating therewith on non-porous substrates such as glass and of further applying a resinous sealant composition over such a tenacious coating used as a primer, and coated substrates having such a tenacious coating thereon without or with a further resinous sealant composition.

Abstract: What are disclosed are the method of making a moisture-curable silicon terminated organic polymer which comprises reacting a polyurethane prepolymer having terminal active hydrogen atoms with an isocyanato organosilane having at least one hydrolyzable alkoxy group bonded to silicon, silicon terminated organic polymers so produced, and moisture-curable sealant compositions comprising such a silicon terminated polymer.