Abstract: A method is disclosed for preparing compression molded or pressed lignocellulosic articles. The method involves forming a binder resin by combining a polyisocyanate component with a synergist component of a C1 to C4 N-alkyl pyrrolidone, gamma-butyrolactone, or mixtures thereof. A resinated lignocellulosic mixture is formed by combining the binder resin with lignocellulosic particles having a moisture content of from 2 to 15 weight percent. The compression molded or pressed lignocellulosic article is formed by compressing the resinated lignocellulosic mixture.

Abstract: A method is disclosed for preparing compression molded or pressed lignocellulosic articles. The method involves forming a binder resin by combining a polyisocyanate component with a synergist component of a C1 to C4 N-alkyl pyrrolidone, gamma-butyrolactone, or mixtures thereof. A resinated lignocellulosic mixture is formed by combining the binder resin with lignocellulosic particles having a moisture content of from 2 to 15 weight percent. The compression molded or pressed lignocellulosic article is formed by compressing the resinated lignocellulosic mixture.

Abstract: The present invention relates to a process for bonding two or more wood substrates by using as the adhesive isocyanate-terminated prepolymers having an isocyanate content of 8 to 20 wt.

Abstract: Adhesive compositions based on polyurethane and a polyamine suspension have a free isocyanate functional group content of between 2 and 9% by weight, with the polyamine being in the form of particles having a mean diameter of between 30 and 60 &mgr;m. A process for preparing the adhesive compositions involves reacting a polyol and a polyisocyanate to form a polyurethane prepolymer, wherein the prepolymer is mixed with the polyamine suspension. The adhesive compositions can be used for the adhesive bonding of materials, especially for motor vehicles.

Abstract: A process for making an ink jet image display comprising: providing an ink jet recording element comprising a substantially transparent support having thereon, in the order recited, a base layer comprising a hydrophilic or porous material and a porous, ink-receptive top layer capable of accepting an ink jet image comprising a polymeric adhesive binder and thermally-activated adhesive polymeric particles, the polymer used to make the polymeric particles comprising a polycaprolactone; printing an ink jet image on the recording element; bringing the top layer of the recording element in contact with another substrate to form a composite assemblage; and subjecting the composite assemblage to heat and pressure to adhere the recording element to the substrate to form the ink jet image display.

Abstract: The invention relates to a viscoelastic damping foam with an adhesive surface for adhesion coupling to vibrating surfaces, for solid-borne sound absorption. The viscoelastic damping foam is obtained through the stoichiometric reaction of a polyisocyanate with at least two polyols of the polyether type which are incompatible with one another.

Abstract: The invention relates to a method of gluing veneers to form LVL and plywood boards from veneers laid one over the other in several layers by curing the adhesive placed between the single layers in a heated press. The invention consists in the fact that the gluing and pressing of the outer layers of a veneer pack to form LVL and plywood boards is performed by high-temperature adhesive and the inner layers by low-temperature adhesive, so that the amount of heat to be put into the veneer pack decreases from the outside in.

Abstract: A film wrap coating used to coat both metallic and non-metallic profiles for architectural and/or automotive components including a PVC backing layer which is bonded and at least partially cross-linked to a polyvinyl fluoride (PVF) film layer, and a paint or pigment layer applied to the PVF layer, most preferably, the paint applied to thermally reflective latex paint. The film wrap is formed by aligning a sheet of PVF overtop of a flexible sheet of PVC. Following the alignment of the PVC and PVF sheets, a third layer of paint is then applied to the exposed surface of the PVF sheet and the three layers are heated so that the PVC and PVF sheets fuse to each other resulting in at least partial cross-linking therebetween, and the paint on the pigment layer cures and fuses to the PVF sheet.

Abstract: Herein is desclosed a curable resin composition comprising at least one polyol selected from the group consisting of Polyol A, including polybutadiene polyol (Polyol Aa), Polyol B, including polybutadiene polyol (Polyol Ba) and polyester polyol (Polyol Bb), and Polyol C, and at least one polyblock isocyanate selected form the group consisting of polyblock isocyanate (Isocyanate X), including polybutadiene polyblock isocyanate (Isocyanate Xa), which is excellent in warp property, i.e., provides a low shrinkage, upon curing, and the cured products of which are particularly excellent in flexibility and excellent in such properties chemical resistance, heat resistance, electric insulation, bending resistance and adherence, and which is, therefore, suitable for overcoat of flexible circuit.

Abstract: There is provided an adhesive article including (a) a radiation curable adhesive layer comprising an acrylic pressure sensitive adhesive and, optionally, an acrylated urethane polymer; and (b) a transparent carrier layer. The adhesive article may contain a radiation curable epoxy layer between the radiation curable adhesive layer and the transparent carrier layer. This adhesive article is particularly useful in preparing protective coatings on color filters for use in a liquid-crystal display panel structure. The radiation curable epoxy layer and radiation curable pressure sensitive adhesive are applied to the color filter and then exposed to UV radiation. The UV radiation exposure transforms the pressure sensitive adhesive from a removable adhesive to a permanent adhesive. The color filter with the UV cured adhesive layer is then baked to fully cure the adhesive layer and to transform the adhesive further into a near structural adhesive.

Abstract: A polyurea, comprising the reaction product of isophorone diisocyanate (IPDI), hexamethylene diisocyanate (HDI), isocyanurates thereof and combinations of these materials with amines, the polyurea having a NCO/NH2 ratio of 0.9 to 1.1 to 1 and an average molecular weight of at least 5000.

Abstract: In one embodiment the invention is An adhesive composition comprising a) a polymer having a flexible backbone and a reactive moiety capable of cross-linking, b) a particle comprising an active agent encapsulated in an encapsulating agent wherein the active agent comprises a catalyst for cross-linking of the reactive moiety, a curing agent for the reactive moiety, an accelerator for the curing reaction or a mixture thereof; and the encapsulating agent comprises a side chain crystallizable polymer wherein the active agent is not substantially extractable from the particle at ambient conditions in a first extraction after particle formation. This composition is used in binding two subtracters together.

Abstract: It is to provide a method for laminating a woody fiberboard in which woody fiberboards are laminated with increasing the strength thereof, the laminated woody fiberboard is processed into a prescribed shape and the strength of the processed article is increased, so as to complete the product. The method comprises the steps of: molding wood chips using an adhesive as a binder, to produce a woody fiberboard having a prescribed thickness; impregnating or coating a single board of the woody fiber board with a polyurethane series primer, followed by drying; laminating by adhering two or more of the dried woody fiberboards with adhesive; processing the laminated woody fiberboard by a cutting blade into a prescribed shape; impregnating or coating the processed article with a polyurethane series primer followed by drying; and impregnating or coating the dried article with one or more of a urethane series resin, a melamine series resin, a polyester series resin and a lacquer, so as to finish the product.

Abstract: Disclosed is a polyol/polyisocyanate adhesive system having an isocyanate component and a catalyzed component which form a heat-cured composition when admixed and heated above a threshold temperature. The catalyzed component has a hydroxyl-functional component catalyzed with a catalyst combination of a heat-activatable amine or amine-like catalyst which is activated at temperatures above the threshold temperature, and an activatable complexed metal catalyst comprising the reaction product of tin or bismuth catalysts, or a mixture thereof, and a molar excess of a mercapto compound complexing agent. The catalyst combination is effective to maintain the processibility of the system at ambient temperatures while promoting the rapid cure of the system when heated above the threshold temperature.

Abstract: A polyolefin material can be adhered to other material with good adhesion durability by 1) applying a first primer which contains i) a resin comprising a backbone of hydrocarbon chains and/or polybutadiene chains, and ii) a polyisocyanate compound or an alkoxysilane compound, to the surface of a polyolefin material, 2) applying a second primer which contains a polyisocyanate compound or an alkoxysilane compounds, onto the layer of the first primer, and 3) adhering the surface of the polyolefin material to which the first and second primers are applied to other material using a moisture-curing polyurethane adhesive.

Abstract: Tufted carpeting can be manufactured employing polyurethane adhesives and cured face up without dripping, when one or more drip-reducing process steps of adding a non-Newtonian thickener to the adhesive or forming a viscosified or cured film on the outer surface of the adhesive are practiced prior to entry of the greige good into the curing oven.

Abstract: A stable colloidal aqueous dispersion of a partially and homogeneously crosslinked polyurethane/polyurea is made by inserting an integral emulsifier and an internal dispersion stabilizer into a polyurethane having a polyester- or polycaprolactone diol backbone and chain extending and crosslinking it with a mixture of diamine and triamine having a functionality of from 2.05 to 2.18. A highly concentrated solution of a dihydroxycarboxylic acid in a solvent such as N-methyl pyrrolidone permits the hydroxyl groups to react thoroughly and quickly with an isocyanate-terminated polyurethane and, consequently, a minimal amount of the solvent is present in the adhesive after water is removed from the aqueous dispersion. The adhesive is thus heat resistant at 70° C. despite its relatively small degree of crosslinking.

Abstract: Method and system for applying an adhesive agent to a covering material in the process of bonding the covering material to a foam cushion member to produce a bonded unit forming a seat. As a base material of the adhesive agent, only a primary component material and secondary curing agent are used, without any organic solvent added in the primary component material. Heat of a predetermined temperature is continuously applied to the primary component material by heating elements so as to retain its lowered viscosity through a whole fluid passage from a storage point to a spray gun, so that the heated primary component material in a fluid state may be injected from the spray gun, while being mixed with the curing agent in the air at the same time, thereby applying a properly atomized state of the mixture, as an adhesive agent, to the covering material.

Abstract: An adhesive paste, free of water, based on a reaction product of a polyisocyanate component and a co-reactant selected from the group consisting of a polyol, a monofunctional fatty derivative component and mixtures thereof, wherein the reaction product contains moisture reactive isocyanate groups.

Abstract: The present invention relates to an aqueous dispersion containing an isocyanate-reactive polymer and a polyisocyanate, wherein the polyisocyanate has a melting or softening point of >30° C. and is in the form of a finely divided powder having a mean particle diameter of less than 100 &mgr;m.

Abstract: Laminated carpeting consisting of a secondary backing adhered to a greige good of yarn tufted into a primary backing are prepared from polyurethane adhesives by single puddle processes which allow for lowered use of polyurethane while producing carpets exhibiting excellent delamination strength. Preferably, a reactive polyurethane system is employed as a primary adhesive, and the secondary backing is skip-coated with a minor amount of a non-advancing skip coat.

Abstract: Adhesive formulations are blends of aqueous polymer dispersions and a hydrophobic plasticizer. The blended dispersed polymers include at least one hard sulfonated polyester urethane, at least one soft non-sulfonated polyester urethane, and at least one polar non-polyurethane water-based polymer or copolymer. A high molecular weight elastomeric non-sulfonated polyurethane polymer and a crosslinker are optional further components in the blend. The formulations are useful as non-heat activating, one-component adhesives which generate excellent green strength, water and heat resistant bonds.

Abstract: A contact adhering method comprising the steps of: (1) applying a layer of a moisture curable adhesive to at least one of two adherends; (2) maintaning the two adherends in non-contact with each other for a period of time until the surface of the layer of moisture curable adhesive develops tack as a result of exposure to atmospheric moisture; and (3) bringing the two adherends into contact with each other in a tack range.

Abstract: Tufted carpeting can be manufactured employing polyurethane adhesives and cured face up without dripping, when one or more drip-reducing process steps of adding a non-Newtonian thickener to the adhesive or forming a viscosified or cured film on the outer surface of the adhesive are practiced prior to entry of the greige good into the curing oven.

Abstract: A pressure sensitive adhesive composition comprised of a substantially tacky polymer containing a number of prismatic or holographic platelets. When the composition is applied to a substrate, the platelets align themselves in a planar fashion parallel to the broad face of the surface on which the coating is applied. The resulting composition layer is transparent except for the platelets that refract and reflect the light striking the platelets back towards an observer. The color of the reflected light changes as the angle at which the platelets are viewed is changed. In this manner, the platelets in the coating provide an overall aesthetically pleasing appearance for the coated material that adds distinctiveness to decorative labeling, as well as to the objects on which the labeling is placed and other suitable types of laminations in which the adhesive coating may be used.

Abstract: The invention relates to an adhesive system for labeling containers, more especially hollow containers, with wrap-around labels. The adhesive system comprises a pick-up adhesive and an overlap adhesive. It is characterized in that, in the wet state, the pick-up adhesive has sufficient wet bond strength for labeling and, in the dried state, does not adhere to at least one of the substrates. The pickup adhesive contains 5 to 85% by weight and preferably 5 to 60% by weight of at least one water-soluble polymer based on casein, starch, dextrin, glucose, polyvinyl alcohol, polyurethane or polyacrylic acid, 0.00 to 1.00% by weight and preferably 0.01 to 0.30% by weight of at least one defoamer, 0.00 to 1.00% by weight and preferably 0.01 to 0.30% by weight of at least one preservative and water as the balance to 100% by weight.

Abstract: An optical lens comprising a polyvinylalcohol film layer that is covalently bonded to a bulk polymerizable material during formation of the polymeric lens. The bulk optical lens polymer is preferably a glycol bis(allylcarbonate). Covalent bonding between these materials is achieved via an adhesive mixture that contains (a) a polyurethane to bond with the polyvinylalcohol layer, and (b) a polymethacrylate terpolymer with (i) pendant hydroxy groups that bind to the urethane, and (ii) pendant allyl groups that covalently bond to the bulk polymer. This strong covalent bonding reduces the chance of delamination of the lens during surfacing, polishing, and edging, and preserves its integrity during the lifetime of the finished eyewear.

Abstract: An adhesive suitable for bonding wood is both heat curable and radio frequency (RF) curable. This adhesive is composed of an isocyanate-terminated prepolymer and hydrolyzed soy protein having a pH of at least about 9 and advantageously from about 9 to 11.5. The weight ratio of prepolymer to soy protein hydrolyzate ranges from about 70:30 to 90:10.

Abstract: Compositions made up of an aromatic polyisocyanate and a polyester having an average molecular weight of from about 600 to about 5000, obtainable by self-condensation of ricinoleic acid, optionally with co-utilization of a C2-C20 starter polyol and optional additives. These compositions are useful as binders for the production of composite materials.

Abstract: The invention concerns a laminate comprising: a) a plastics foil; b) an adhesion-promoting layer based on polyurethane containing one or a plurality of polyester diols with a molecular weight of between 600 and 1200, preferably between 800 and 1000; c) optionally a further plastics foil; d) optionally a further polyurethane-based adhesion-promoting layer, e) optionally a varnish layer, f) optionally a filler layer; and g) a carrier material layer, preferably of plastics, wood or metal.

Abstract: A composition containing at least one isocyanate terminated polyester obtainable by enzyme catalyzed polyesterification of one or more monomers selected from dicarboxylic acids, diols or polyols and/or hydroxyacids in the presence or absence of an inert organic solvent and a diisocyanate.