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: 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: The invention is a two-part adhesive comprising as a first part: A. a polyurethane prepolymer having reactive isocyanate moieties; and a second part B. a curative composition comprising a polyurea, comprising the reaction product of a polyamine and a polyisocyanate dispersed in a polyether polyol-based polyurethane prepolymer having reactive hydroxyl moieties, and optionally a plasticizer; ii) a compound having at least one oxazolidine moiety capable of reacting with an isocyanate under curing conditions; and iii) a catalyst capable of catalyzing the reaction of isocyanate and hydroxyl moieties in the presence of moisture. The adhesive of this invention provides reasonable drive away times for replacement glass it binds into automobiles. Such drive away times are preferably about 60 minutes and more preferably about 30 minutes from application of the adhesive. The adhesive of the invention also provides reasonable working times, about 10 to 12 minutes.

Abstract: The invention is a primer composition, comprising(a) a polyester resin of a carboxylic acid and a glycol;(b) a polymethylene poly(phenyl isocyanate), diphenylmethane diisocyanate or a mixture thereof; and(c) bismuth octoatein a volatile solvent.The primer composition of the invention advantageously provides improved adhesion characteristics of metal-to-glass bonding when used to prime substrate, particularly painted metal substrate before the application of a urethane adhesive. The primer composition of the invention may also be used to prime other metal and glass surfaces for use with various adhesives.

Abstract: The invention is a two-part adhesive containing as a first part:A. a polyurethane prepolymer having reactive isocyanate moieties;and a second partB. a curative composition containingi) a polyurea, comprising the reaction product of a polyamine and a polyisocyanate, dispersed in a polyether polyol-based polyurethane prepolymer having reactive hydroxyl moieties, and optionally a plasticizer;ii) a compound having at least one oxazolidine moiety capable of reacting with an isocyanate under curing conditions; andiii) a catalyst capable of catalyzing the reaction of isocyanate and hydroxyl moieties in the presence of moisture.

Abstract: The present invention is directed to a diffractive display suitable for presenting graphic and the like displays. Broadly, the novel display is realized from a diffraction pattern (132) carried by (e.g. embossed) a film or element (138) connected to an energy source which is energizable for movement of the film (138). Movement of the patterned film (138) generates a display using the diffracted light from the embossed pattern (132). Electroactive films are known in the art, including, for example, piezoelectric films, electrostrictive films, electromotive films, and electrostatic films. Magnetoactive films also are known in the art. Any of these films (138) can carry the diffraction pattern (132) and be energized for movement to generate from the resulting diffracted light.

Abstract: The invention is the process for binding two substrates together using a two-part adhesive comprising as a first part:A. a polyurethane prepolymer having reactive isocyanate moieties;and a second partB. a curative composition comprisingi) a polyurea, comprising the reaction product of a polyamine and a polyisocyanate, dispersed in a polyether polyol-based polyurethane prepolymer having reactive hydroxyl moieties, and optionally a plasticizer;ii) a compound having at least one oxazolidine moiety capable of reacting with an isocyanate under curing conditions; andiii) a catalyst capable of catalyzing the reaction of isocyanate and hydroxyl moieties in the presence of moisture.