Abstract: A process is described which is useful in treating metal surfaces to increase the adhesion of polymeric materials thereto. The process involves treating the metal surface with a pre-dip which comprises an aqueous solution with pH of from 5 to 12 and then further treating the metal surface with an adhesion-promoting composition comprising an acid, an oxidizer and a corrosion inhibitor.

Abstract: The present invention relates to a method for improving both adhesion between substrate and polymer layers and the durability of such composite structures; while maintaining the malleability and preferred characteristics of the original substrate. Quite unexpectedly, the application of a layer or film upon an uncured, encapsulated base substrate which has been encapsulated by the shear thinning methods of the present invention, results in superior adhesion of multiple layers when compared to conventional layering, coating or composite manufacturing methods. Moreover, the uncured or at most, semi-cured, polymer composition applied to the base substrate ensures that the substrate maintains maximum flexibility for subsequent shaping into composite articles prior to curing. The methods described herein produce multiple layer composite articles that are lighter, stronger, more flexible and utilize less material, than composite articles produced by conventional techniques.

Abstract: A frame-attached transparent plate is produced by injection-molding a frame in a mold for injection molding, opening the mold, and projecting the frame in an arched form corresponding to a curvature of a glass plate to press the frame to only a surface of a peripheral portion of the glass plate so as to bond the frame to the peripheral portion of the glass plate. With this, the shape in cross section of the frame can optionally be selected even when the glass plate has a curved portion, and problems such as a poor dimensional accuracy, a poor bonding strength, a poor appearance and so on of the frame can be eliminated.

Abstract: An aqueous composition is essentially free of organic solvents, plasticizers and additional tackifiers and contains water and 20-99% by weight of a polymer and 1-80% by weight of a filler, the percentages by weight being based on the sum of the components of the aqueous composition, with the exception of water.

Abstract: Adhesion of rubber to a variety of metals (aluminum, stainless steel, mild steel and brass) is effectively achieved by the application of an organofunctional silane (I) and a non-organofunctional silane (II) to the requisite surface. Preferably, the organofunctional silane (I) is a vinyltrialkoxysilane with the non-organofunctional silane (II) preferably comprising an alkoxylated substituted alkyl silane. The silanes (I) and (II) are at least partially hydrolyzed and are normally provided in the form of a EtOH/H2O solution. Bonded joints formed by these adhesive treatments can withstand fuel degradation tests indicating that the treatments can be used, for example, to bond metal and rubber surfaces in automotive and other environments in which the joined parts will be contacted by fuels, oil and/or organic solvents.

Abstract: The method of forming a cushion assembly (10) includes placing a pre-contoured trim layer (16) on a complimentary contoured mold (22), placing an air impervious adhesive film (18) thereover, drawing the trim layer (16) and film (18) against the mold (22), spraying a solvent activator (28) thereover, placing a contoured foam pad (14) over the adhesive film (18) and solvent activator (28), and compressing the foam pad (14) against the trim layer (16) by an upper platen (34) to bond the foam pad (14) and trim layer (16).

Abstract: Electrical interconnects for solar cells or other electronic components using a silver-silicone paste or a lead-tin (Pb—Sn) no-clean fluxless solder cream, whereby the high breakage of thin (<6 mil thick) solar cells using conventional solder interconnect is eliminated. The interconnects of this invention employs copper strips which are secured to the solar cells by a silver-silicone conductive paste which can be used at room temperature, or by a Pb—Sn solder cream which eliminates undesired residue on the active surfaces of the solar cells. Electrical testing using the interconnects of this invention has shown that no degradation of the interconnects developed under high current testing, while providing a very low contact resistance value.

Abstract: The invention disclosed provides integral multilayered polymers with variable interlayer gaps, and processes for their manufacture. The materials thus produced consist of many layers of a polymeric material, which may be a single polymer or a blend of compatible polymers, separated by discontinuous narrow gaps containing air and/or a blowing agent. The layer density can be controlled within a wide range, typically 10 to 2000 layers/mm, while the gap width between the layers can be controlled either to ≦100 nanometers (called nanolayered polymers) or ≧1 micrometer (called microlayered polymers), depending on the process. These layered materials are mechanically strong and have excellent thermal and electrical, and sound insulation properties. Two distinct mechanisms were developed for producing such materials.

Abstract: The invention relates to a method of laminating two substrates by coating at least one side of a substrate with a laminating adhesive, bringing a coated side of said substrate into contact with a second substrate to form a three layer film, and treating said three layer film with a free radical initiator, wherein said laminating adhesive is formed by mixing an ethylenically unsaturated acid and a polyamine.

Abstract: Disclosed is a PVC pipe cement composition that comprises a polymeric material of a methyl methacrylate homopolymer or copolymer, a styrene-acrylonitrile polymer, and a rubber grafted with at least a methacrylic acid ester of a C1 to C8 alkanol; and at least about 10% by weight solvent.

Abstract: A substrate is permanently bonded to a thermoplastic member by applying a sufficient degree of heat and pressure. Thermoplastic is notoriously non-receptive to even the most aggressive adhesives. As such, it has been extremely difficult to attach non-plastic components to thermoplastic products. To avoid this problem, the thermoplastic product is heated, on one side, to a temperature just below its melting point. A substrate, made of a material such as polyethylene, is placed against the non-heated side of the thermoplastic. As heat passes through the thermoplastic, it heats and eventually melts a portion of the substrate. Ideally pressure is applied to force the melted material against the substrate. The materials are then allowed to cool and harden, thus forming a permanent bond between them. Additional materials may be coupled to the substrate, as desired.

Abstract: A decorated article is disclosed which has a uniform color tone and which is excellent in heat resistance and humidity resistance which can be produced by preparing a base material, a surface of which is composed of an overlay, by injection molding or the like, the overlay having a wood material layer, a first side of the wood material layer constituting a surface of the overlay; providing a thermosetting coloring layer comprising at least one thermosetting resin, or a modified resin thereof, selected from the group of urethane resins, epoxy resins, amino-alkyd resins, and acrylic resins on the first side of the wood material layer; and laminating the surface of the thermosetting coloring layer with a thermoplastic resin sheet by a glue, and carrying out hot-pressing. The thermosetting coloring layer 15 may be formed by laminating a coloring layer 15A and a sealing layer 15B in that order.

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: Hydrophilic hot melt adhesive compositions suitable for a variety of applications, especially in nonwoven disposable articles, are prepared by (blending various adhesive components with a surfactant.) The surfactant has a hydrophile-lipophile balance (HLB) number of less than 15, and is incorporated into the composition in an amount such that the resultant adhesive has a contact angle of 75° of less, and preferably less than about 40°. A low contact angle is desirable so that water, urine or other water-based discharges, upon contacting a laminate bound together by the adhesive, wets out rather than beads up resulting in the fluid being directed away from the adhesive and towards an absorbent core of the disposable article.

Abstract: A surface covering has a base to which is laminated a rigid vinyl film. The film is precoated with an electron beam cured wearlayer. The preferred wearlayer composition is a polymerizable organic urethane-polyester wearlayer coating. The coated printed film is prepared by application of a polyester urethane acrylate composition to a printed sheet of rigid vinyl film and the coating is exposed to a low accelerating energy Electro-curtain to form an abrasion resistant topcoat with no apparent degradation of printed rigid vinyl film.

Abstract: Decorative paper with a wear resistant decorative layer is made by limiting the flow of melamine resin through the decorative paper. A partially cured melamine resin impregnated overlay is placed over non-impregnated decorative paper and cured at temperatures of about 230-310° F. (110-155° C.) and pressures of greater than about 300 psi (20 bar) and preferably about 750-1500 psi (51-102 bar) for causing melamine resin to flow from the overlay into the decorative paper and for substantially fully curing the melamine resin. Flow of the melamine resin is limited to about 10-20 and preferably about 12-17 percent by weight of the impregnated overlay. Flow of melamine resin in impregnated decorative paper is limited to about 1-3 and preferably about 1-2 percent by weight of the impregnated decorative paper.

Abstract: A heat-resistant adhesive is provided for use in an adhesive member for the fabrication of a semiconductor package by bonding a semiconductor chip to a lead frame with the adhesive member and sealing at least the semiconductor chip and a bonded part between the semiconductor chip and the lead frame with a sealant. The adhesive has a coming-out length of not more than 2 mm and a water absorption rate of not more than 3 wt. %. Preferably, the adhesive has a glass transition point of at least 200° C.

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: Starch-based corrugating adhesives of the carrier, no-carrier and carrier-no-carrier type having improved green strength and water resistance are prepared by adding hemicellulose to the adhesive composition. When the adhesive is the carrier type or the carrier-no-carrier type, the hemicellulose can be extracted from corn fiber in situ during the process of preparing the carrier phase.

Abstract: A hot melt adhesive composition can be made using a polyester derived from 2-hydroxy-propanoic acid (lactic acid). A biodegradable/compostable thermoplastic resin can be formulated into a hot melt adhesive using a lower molecular weight material as a tackifying resin. The adhesive material can be made pressure sensitive and can be made entirely biodegradable by combining the polyester polymer with other biodegradable/compostable ingredients. The biodegradable/compostable adhesive material can be used as a substitute for non-biodegradable materials made from commercial polymers that resist attack by bacteria, fungi and other microbial populations. The resulting adhesive composition can be used in a variety of applications such as packaging and for the manufacture of disposable articles which are made from degradable materials. The entire disposable article can be made from adhesives and structural materials that are fully biodegradable/compostable.