Abstract: The invention relates to a two-component polyurethane adhesive, in particular for laminating films, wherein the PU adhesive, based on the total weight of the laminating adhesive composition, (a) contains as resin component at least one NCO-terminated polyurethane pre-polymer having a content, based on the total weight of the resin component, of at least 40 wt % of diphenylmethanedi-isocyanate (MDI), wherein the MDI is 4,4?-diphenylmethanediisocyanate or a mixture thereof with 2,4?-diphenylmethanediisocyanate, and 2 to 20 wt % of polyglycol having a molecular weight Mw of 200 to <1000 g per mol, and (b) contains as hardener component a polyol mixture comprising 2, 3, or more different polyols and is free of polyesters. The invention further relates to the use of the adhesive for bonding films, to methods for producing composite films, and to composite films bonded with the adhesive described.

Abstract: A construction component comprising a foamed cellular board comprising smooth exterior surfaces separated by a cellular network and cut edges, and sealed caps adhered to the cut edges on the foamed cellular boar. The board has a density of less than 0.55 g/cm3, and the cut edges on which the sealed caps are adhered are unmelted edges.

Abstract: The present disclosure discloses a method for preparing dual-sensitive cellulose-based aerogel. The DAC (Dialdehyde cellulose), the DAC/PDMAEMA (poly-2-(dimethylamino)ethyl methacrylate) copolymer, the DAC/PDMAEMA/PEI (Polyethylenimine) copolymer are serially prepared, was freeze-dried to obtain a product. The product is the dual-sensitive cellulose-based aerogel, a cumulative adsorption capacity of the dual-sensitive cellulose-based aerogel is 250 mg/g, and a cumulative release amount of the dual-sensitive cellulose-based aerogel in 0.05 mol/L NaH2PO4 (pH=3-8), 0.2% NaCl (pH<3), or NaOH (pH>8) is 63-90%.

Abstract: Contact adhesive compositions comprising polychloroprene and, based on the polychloroprene content, 10 to 99 wt % of ethylene-vinyl acetate copolymer exhibit outstanding adhesion to substrates such as ethylene-vinyl acetate copolymers, thermoplastic elastomers or flexible PVC. The contact adhesive compositions of the invention are especially suitable for use in the bonding of articles, preferably articles in which at least part of the articles to be bonded consists of polyurethane, flexible PVC, ethylene-vinyl acetate copolymers and/or thermoplastic elastomers. This allows the adhesive composition to be employed widely in the footwear industry, for the bonding of roofing membranes containing flexible PVC, ethylene-propylene-diene rubber (EPDM) and/or ethylene-vinyl acetate copolymers, or for the bonding of synthetic leather based on flexible PVC.

Abstract: The present disclosure provides a PVC or CPVC solvent cement and a composition for forming a PVC or CPVC coating on an object. The solvent cement and the coating composition each include one or more caprolactam-derived solvents and a polymer selected from the group of polyvinyl chloride and chlorinated polyvinyl chloride. The one or more caprolactam-derived solvents include a linear alkyl group of 1, 2 or 4 unsubstituted carbons or an alkoxymethyl group of 2 or 3 unsubstituted carbons bonded to a nitrogen heteroatom.

Abstract: Disclosed herein are embodiments of a silicone-based foam material and composition and method embodiments for making the same. Also disclosed are embodiments of a silicon-based material that can be formed from the silicone-based foam material, as well as methods for making the same.

Abstract: A surfactant of formula (I): A-(L1)a-(C2)b-(L2)c-X??(I) wherein A is a perfluoropolyether; L1 is CONR', wherein R? is selected from H and C1-6 alkyl; a is 0 or 1; b is 0 or an integer between 1 and 10; L2 is a linking group; c is 0 or 1; and X is a charged group.

Abstract: The disclosed method relates to a method of recycling high relative viscosity nylon. The process involves melting a base polyamide with a dry blended mixture of dicarboxylic acid and a second polyamide. The disclosed method provides a process of controlling the relative viscosity of the combined polyamides and, in various aspects, the second polyamide may be nylon plop or other polyamide having high relative viscosity.

Abstract: A hydrogel of which the degradation is accurately controlled can be provided by a photodegradable hydrogel production method, the method comprising the steps of: reacting ?-glucan having a weight average molecular weight of 2000 to 200,000 with a compound represented by formula I to introduce a group represented by formula II into the ?-glucan; oxidizing the ?-glucan having, introduced therein, the group represented by formula II with periodic acid or a periodate salt to introduce an aldehyde group into the ?-glucan; and adding aminated carrageenan gel beads having polydopamine particles embedded therein to a gelling agent which has been prepared by introducing a group represented by formula II and an aldehyde group into ?-glucan, and then causing the crosslinking reaction of the resultant product with a polythiol-type reducing agent to form the hydrogel.

Abstract: Tumor resection is commonly practiced to prevent the progression of cancer. However, there are post-surgery concerns including the formation of a void that can allow cancer cells to escape at the surgery site, which increases the risk of metastasis. To counter this challenge, an embodiment includes a polyurethane-based shape memory foam as a tissue void-filling device that can also release anti-cancer drugs. Such foams may activate at body temperature and become malleable. Such properties may enable the foam to be shaped to precisely seal the tissue void and then serve as a drug-eluting device. Based on the drug composition with poly vinyl alcohol (PVA), the drug release profile from the foam may be altered depending on the application.

Abstract: A cation-exchange membrane includes layer (I) containing repeating units (A) each represented by formula (1) and repeating units (S) each containing a sulfonic acid-type ion-exchange group, wherein the mass proportion of repeating units (A) based on the total mass proportion of repeating units (A) and repeating units (S) being 100% by mass is 53% by mass or more and 70% by mass or less; and layer (II) containing a fluorine-containing polymer containing a carboxylic acid-type ion-exchange group and disposed on layer (I), wherein the water content of layer (I) is 26% or more and 35% or less: CF2—CF2??(1)

Abstract: An acrylic resin powder soluble in acetone, including a multi-stage polymer (M) that includes a polymer (B) obtained by polymerizing a monomer mixture (b) containing methyl methacrylate and an alkyl (meth)acrylate ester (mb) in the presence of a polymer dispersion that contains a polymer (A) obtained by polymerizing a monomer mixture (a) containing an alkyl (meth)acrylate ester (ma), in which an alkyl group in the alkyl (meth)acrylate ester (ma) has 4 to 8 carbon atoms, an alkyl group in the alkyl (meth)acrylate ester (mb) has 4 to 8 carbon atoms, a glass transition temperature of the polymer (A) is 20° C. or lower, a glass transition temperature of the polymer (B) obtained by polymerizing the monomer mixture (b) is 55° C. or higher, and a mass average molecular weight of the multi-stage polymer (M) is 10,000 or more and 300,000 or less.

Abstract: An organic light emitting device including a first electrode, a second electrode facing the first electrode, an emission layer between the first electrode and the second electrode, a hole transport region between the first electrode and the emission layer, and an electron transport region between the emission layer and the second electrode, wherein the electron transport region may include a first compound represented by one selected from Formulae 1A to 1E, and at least one selected from the hole transport region and the electron transport region may include a second compound represented by Formula 2A or 2B:

Abstract: Provided is a method that can produce a resin porous material from a water-insoluble polymer in a small number of steps while suppressing the formation of skin layers. The production method of a resin porous material disclosed herein includes preparing a solution of a water-insoluble polymer in a mixed solvent including a good solvent of the water-insoluble polymer and a poor solvent of the water-insoluble polymer, and drying the solution to remove the mixed solvent. The poor solvent has a higher boiling point than the good solvent. The drying the solution is performed using superheated water vapor.

Abstract: The present invention is related to a foam fabric comprised of foam particles, a foaming agent, an antibacterial agent, a filler and a glue and methods of making it. The foaming agent is comprised eg of azodicarbonamide, triazinyl triazine, ethanolamine and aluminum potassium sulfate; the antibacterial agent is comprised eg of 2,4,4?-trichloro-2?-hydroxydiphenyl ether and ethylene oxide; the filler is chosen eg from titanium dioxide, iron oxide, mica powder and combinations thereof; and the glue is comprised of eg a rosin resin and an epoxy composite resin, wherein the epoxy composite resin is comprised of an epoxy resin, a terpene resin, aluminum oxide, polybutene and an emulsifier and a solvent.

Abstract: Solvent-free, hydrophobically modified urethane (HEURs) compositions produced by reactive extrusion, methods of producing the same, and coating compositions containing the same are described. Such HEURs can be used as solvent-free or low-solvent rheology modifiers in coatings formulations. The HEURs compositions herein are formed by reactive extrusion of a polyether polyol and an isocyanate functional material in the presence of a metal catalyst, and an hydrophobic, end-capping modifier without the need for organic solvents, co-solvents, and/or surfactants. In certain aspects, compositions and methods herein do not require the costly stripping of organic solvent to provide useable product, allow for a 100% active solids HEUR that can be added directly to the grind stage of making a paint composition, and are free of VOC-contributing solvents or co-solvent.

Abstract: A polyurethane elastomer, which can be a foam, generated from (a) an organic diisocyanate, (b) a polyester resin, (c) a chain extender comprised of a polyhydric alcohol, (d) a crosslinker, (e) a plasticizer, (f) a surfactant, (g) a bio-additive, (h) a blowing agent, and (i) an optional dye; and optionally where the elastomer has, for example, a hardness value of, for example, from about 15 Asker C to about 60 Asker C, a tensile strength of from about 1 MPa to about 10 MPa, a resilience of from about 30 percent to about 60 percent, an elongation at break of from about 150 percent to about 700 percent, and a tear strength from about 2 Newtons/millimeters to about 4 Newtons/millimeters, and which elastomers can be selected for footwear.

Abstract: This invention provides flame retardant compositions comprised of or formed from components comprising a sulfur-containing compound and at least one isocyanate-reactive brominated flame retardant.

Abstract: A biliquid material includes an emulsion having a continuous liquid phase, a dispersed liquid phase, and a surface-stabilizing material, wherein: the dispersed liquid phase is immiscible with the continuous liquid phase; the dispersed liquid phase is in the form of a plurality of droplets in the continuous liquid phase; the surface-stabilizing material is soluble in at least one of the continuous liquid phase and the dispersed liquid phase and preferentially adsorbs at the surfaces of the plurality of droplets, wherein the surface-stabilizing material imparts a repulsive interaction between the plurality of droplets that inhibits coalescence of the plurality of droplets; and the biliquid material has a structurally-colored droplets structure, wherein the structurally-colored droplets structure yields one or more structural colors when illuminated with broad-spectrum light wherein the one or more structural colors arise from diffraction of the broad-spectrum light by the plurality of droplets.

Abstract: A high internal phase emulsion stabilized by a low content of surfactant and its preparation method thereof are provided. An oil ethoxylate is added to a vegetable oil, and the resulting mixture is uniformly mixed under a low-speed stirring at room temperature. Water is added dropwise to the mixture of surfactant and vegetable oil under stirring, and a homogenization is performed on the obtained dispersed system by a high-shear dispersion emulsification homogenizer to obtain the high internal phase emulsion stabilized by oil ethoxylate. The preparation method requires a low content of surfactant, mild preparation conditions and simple operations. When the oil-phase volume fraction is 83 vol %, the minimum mass fraction of the oil ethoxylate to stabilize the high internal phase emulsion is 0.6 wt %, and the prepared oil-in-water type high internal phase emulsion has excellent stability and shows bright color, delicate odor, hydra feel and being easy to apply.