Abstract: The present invention provides the following adhesive which is good in durability in bonding a glass plate and a resin composition containing a butyl type rubber. The present invention provides the following adhesive which is particularly suitable as an adhesive for bonding a glass plate and a resin composition containing a butyl type rubber, for a double glazing employing a spacer comprising a resin composition containing a butyl type rubber.

Abstract: A moisture reactive hot melt adhesive composition formed by admixing components including a polyisocyanate, an amorphous polyol, 1.3 to 6%, by weight based on the weight of the adhesive composition, tri-C1-C6-alkyl citrate, and 0.1 to 10%, by weight based on the weight of the adhesive composition, of certain styrene/allyl alcohol copolymers, wherein the ratio of NCO/OH groups of the components on an equivalents basis is from 1.05 to 2.5, the components being free from crystalline polyesters and polyethers and the components containing less than 1%, by weight based on the total weight of the components, of water is provided. Also a method for forming the adhesive composition and a method for bonding two substrates using the adhesive are provided.

Abstract: One embodiment of the invention is a composition adapted for coating goods comprising a polyisocyanate component and a polyisocyanate reactive component further comprising a polyaspartic ester and cycloaliphatic amine. Another embodiment of the invention is a method for coating goods by mixing a preferred polyisocyanate component with a preferred polyisocyanate reactive component and then applying the coating to the goods which are to be coated. Yet another embodiment of the invention is a method of adhering two surfaces by forming a coating by mixing a preferred polyisocyanate component with a preferred polyisocyanate reactive component, applying the coating mixture to one surface and contacting the second surface to the coated first surface.

Abstract: A method for preparing compression molded or pressed lignocellulosic articles is disclosed. The method involves forming a binder resin by combining a polyisocyanate component with a parting agent and preferably a synergist. The parting agent is the reaction product of an isocyanate compound and an isocyanate-reactive compound of the general structure R—(ao)n—Y where: R is a hydrophobic group containing alkyl, alkaryl, polyaryl, or siloxane moieties; (ao) is an alkylene oxide or mixture of alkylene oxides; n is from 1 to 25; and Y represents a monofunctional isocyanate-reactive group. A resinated lignocellulosic mixture is formed by combining the binder resin with lignocellulosic particles. Then a compression molded or pressed lignocellulosic article is formed by compressing the resinated lignocellulosic mixture at an elevated temperature and under pressure.

Abstract: Hotmelt polyurethane adhesive compositions which are solid at room temperature and capable of being cured by moisture are obtained by combining the reaction product of a polyisocyanate and a low molecular weight polymer derived from ethylenically unsaturated monomers and containing active hydrogen groups such as hydroxyl with an isocyanate-containing polyurethane prepolymer derived from one or more polyols. The low molecular weight polymer component may, for example, be obtained by free radical polymerization of mixtures of unsaturated monocarboxylic acids, alkyl esters of unsaturated monocarboxylic acids, and/or hydroxyalkyl esters of unsaturated monocarboxylic acids.

Abstract: A finished product from lignocellulose, such as a length of wood or chipboard, is impregnated with a composition containing a thermosetting resin in a nonaqueous solvent, and a styrene polymer in a nonaqueous solvent. Excess impregnating composition is removed from the impregrnated material. The solvent or solvents are also removed. The thermosetting resin may thereafter be subjected to temperature conditions for polymerization to form a finished product.

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 process and assembly of a silicon-on-insulator substrate or handle incorporates a low initial viscosity epoxy adhesive having a high cross-linking density. The assembly is formed by distributing the epoxy adhesive at the interstice between a silicon wafer and the handle and heating the assembly so that the epoxy adhesive wicks by capillary action between the silicon wafer and the handle. The heating causes the epoxy adhesive to cross-link so that a strong adhesion is effectuated between the silicon and handle. The simply controllable process affords a high yield at relatively low cost.

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 the manufacturing of a core forming a carrying structure for decorative laminates. The core comprises particles of cured, and optionally foamed, rigid, polyurethane, polyisocyanurate and/or phenolic resin. The particles are bonded to each other in a pressing procedure with a bonding agent comprising an adhesive such as a polymerizing monomer.

Abstract: A method of backing a carpet, comprising the steps of applying, to the back of a carpet, an aqueous emulsion composition prepared by adding a polyisocyanate compound to a specific high-solid-content emulsion compound, laminating a fabric to the composition-applied surface of the carpet, and thermally curing and then drying the emulsion composition applied; and a carpet backed by this method. The aqueous emulsion composition for use in this method is highly safe and easy to handle. Moreover, even when this emulsion composition is applied to the back of a carpet to a thickness of as great as 1 mm or more, it is cured and dried in a short time. The shortcomings in the conventional methods using aqueous emulsions can thus be successfully overcome by this method.

Abstract: A method for forming an isocyanate-functional moisture reactive hot melt adhesive by first forming a hydroxyl-functional prepolymer from a polyol selected from the group including polyester polyols, polyether polyols, and mixtures thereof and a polyisocyanate and subsequently forming the moisture reactive hot melt adhesive from the hydroxyl-functional prepolymer, a polyol selected from the group including polyester polyols, polyether polyols, and a polyisocyanate is provided. An isocyanate-functional moisture reactive hot melt adhesive formed by the method of the present invention and a method for bonding substrates are also provided.

Abstract: An insulated glass sealant having the best characteristics of polysulfides and polyurethanes rather than the worst is made from a polysulfide-based polyurethane prepared by a one-step procedure wherein a randomly copolymeric hydroxyl-terminated polysulfide polyacetal is reacted with a polyisocyanate at a ratio of from about 1:1 to about 1:1.2 on an equivalents basis. The copolymeric hydroxyl-terminated polysulfide polyacetal is made by the condensation of formaldehyde with a mixture of a dithiodialkylene glycol and an aliphatic or cycloaliphatic diol.

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 textile composition for use in constructing useful garments, the textile composition comprising united superimposed layers of a plastisol composition, a primer and a pliant, stretchable fabric.

Abstract: Moisture-activated adhesive compositions are provided which comprise the reaction product of (a) a polyisocyanate and (b) an isocyanate-reactive component comprising an aliphatic tertiary amine-initiated polyol having an ethylene oxide content of at least 1%. Methods for bonding substrates with the present adhesive compositions are also disclosed.

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: The invention provides a method for imparting topographical or protective features to a substrate by contacting a sheet material comprising a thermosettable layer with a substrate and heating the sheet material to an elevated temperature.

Abstract: An insulated glass sealant having the best characteristics of polysulfides and polyurethanes rather than the worst is made from a polysulfide-based polyurethane which, in turn, is derived from a mixture of hydroxyl terminated polysulfides having a structure represented by the following formula: RCH2CH2OCH2OCH2CH2S[SCH2CH2OCH2OCH2CH2S]nSCH2CH2OCH2OCH2CH2R. wherein R═HO(CH2)ySS, y is from 2 to 6, and n is such that the molecular weight is from about 2500 to about 4000. The improved sealant of this invention is prepared by a one-step procedure wherein the hydroxyl terminated polysulfide of said formula is reacted with a polyisocyanate at a ratio between about 1:1 and about 1:1.2 on an equivalents basis. The hydroxyl-terminated polysulfide is made by splitting a polysulfide having a molecular weight about 30 times greater in an aqueous latex dispersion with a dithiodialkylene glycol and sodium sulfite.

Abstract: An aqueous, two component system for coating a substrate includes either a filler incorporated in both components prior to combining the components or an elevated amount of a filler, such as 50% by dry volume, in either component. The filler is preferably calcium carbonate, but may also be selected from titanium dioxide, sand, clay, mica, dolomite, silica, talc, perlite, gypsum, wallastonite, aluminum trihydrate, zinc oxide, barium sulfate, zinc sulfate, and combinations thereof. The first component includes a first polymer containing hydroxyl functional groups or amine functional groups and, optionally, a catalyst, preferably an organotin catalyst. The first polymer is selected from a polyester polyol, an acrylic polyol, a urethane polyol, a polyether polyol, a polyamine, an aldimine, a short oil alkyd, a silicone polyol, a cellulose ester, a vinyl polyol, and combinations thereof and preferably is a polyaspartic ester.

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: A composite structural laminate plate suitable for building maritime vessels or for building civil structures such as double hull oil tankers, bulk carriers, barges decks for roll-on roll-off ferries, orthotropic bridge decks or for building any structural application in which the traditional method of construction uses stiffened steel plates. The laminate has two facing metal layers that are structurally bonded to a polyurethane elastomer core which may have steel or rigid foam void sections embedded within. The laminate provides equivalent inplane and transverse stiffness and strength, reduces fatigue problems, minimizes stress concentrations, improves thermal and acoustical insulation, and provides vibration control. The laminate provides a structural system that acts as a crack arrest layer and that can join two dissimilar metals without welding or without setting up a galvanic cell.

Abstract: A polyisocyanate curing agent for a laminate adhesive, which comprises a hydrophilic polar group-containing polyisocyanate; a laminate adhesive excellent in heat-resistance, durability and adhesiveness to polyolefin film which adhesive comprises the above hydrophilic polar group-containing polyisocyanate and an active hydrogen-containing compound; and use of an adhesive comprising the above polyisocyanate curing agent and an active hydrogen-containing compound in film lamination.

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 method for adhesively joining or sealing two substrates which comprises: (1) applying at about 50° to 150° C. onto a substrate a solvent-free, moisture curable urethane hot melt adhesive composition comprising the polyisocyanate prepolymer reaction product of (a) a polyol and (b) a polyisocyanate; (2) contacting the adhesive disposed on the substrate to a second substrate such that a green bond is formed, and (3) exposing the adhesive bond to ambient moisture causing a crosslinking reaction within the adhesive, thereby forming a moisture-cured bond. The improvement is characterized in that the polyisocyanate prepolymer is prepared by reacting a polyisocyanate with a functionality of at least 2 with a polyol with a functionality of at least 2, the reaction product comprising at least 90 wt % “perfect” prepolymer and less than 2 wt % unreacted isocyanate monomer and the prepolymer having a free NCO functionality ranging from 0.2 to 8 wt %.

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: A solventless urethane adhesive layer which proves excellent oxygen and moisture barrier properties is formed from the reaction of A) a low molecular weight polyester formed from a single species of linear aliphatic diol and a single species of dicarboxylic acid with B) a single species of diisocyanate.

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: Difficult-to-bond substrates possessing low surface energies are bonded with moisture curable polyurethane hot melt adhesive comprising a polyurethane prepolymer which is the reaction product of a polyol component and a polyisocyanate component, wherein said polyol component comprises a polyester polyol which is the reaction product of diacid comprising aromatic diacid and optional co-monomer diacid and diol, with the proviso that said diacid is substantially free of phthalic acid or derivatives thereof.

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.

Abstract: A fiber reinforced composite wood board is designed particularly for use in the flooring of truck trailers which experience adverse operating conditions such as from heavy loads of lift trucks on the top side and water spray during rainy periods on the bottom side. The composite wood board comprises an edge-glued laminated wood member composed of wood segments with end joints. The wood member is underlaid with a thin layer of fiber reinforced plastic. The top surface of the composite wood board is the same as that of the laminated wood. The fiber reinforced plastic underlay is composed of glass and/or carbon fibers embedded in a polymeric resin such as epoxy, phenolic, vinyl ester, polyester, polypropylene or polyamide resin. Further, the fiber reinforced plastic underlay is substantially bonded to the wood member with a reactive hotmelt adhesive.

Abstract: A two component type polyurethane adhesive is provided for fiberglass reinforced plastics which requires no cleaning, preparation or treatment of the surface, and the like. The curative component is a nitrogen-free liquid polyether or polyester in an amount such that in association with a urethane prepolymer component containing free NCO groups, the ratio of the free NCO groups in the prepolymer component to the OH groups in said curative component is at least 1.2 and desirably at least 1.35. Such high NCO/OH ratios have unexpectedly been found to provide good adhesion and especially good humidity adhesion and peel strength adhesion to fiberglass reinforced plastics or metal surfaces which are free from any surface treatment.