Abstract: The waterborne coating composition herein is useful for promoting adhesion of paint to a component such as a plastic automobile part or accessory. The waterborne coating composition is particularly useful for promoting adhesion of paint to a thermoplastic polyolefin surface. The waterborne coating composition is prepared from a mixture comprising at least one chlorinated polyolefin resin and at least one urethane acrylic hybrid resin. The waterborne coating composition provides not only good adhesion of a paint to a thermoplastic polyolefin surface, but also provides good appearance. The waterborne coating composition is also compatible with a wide variety of paint systems and can be rapidly dried under ambient conditions.

Abstract: A multilayered film which is formed using a solventless adhesive, can obviate wetting deficiency even when the film is manufactured by applying the solventless adhesive to a film by coating at a high speed, exhibits the excellent laminate strength and the excellent impact resistance after a liquid content is filled into a packaging container and exhibits excellent environment friendliness, a method of manufacturing the multilayered film, and a packaging container which uses the multilayered film are provided. In the multilayered film which is formed by laminating at least an inner-layer film, an adhesive layer and an outer-layer film in order, the adhesive layer is formed of a solventless adhesive which contains a polyester-based main agent and a curing agent made of aliphatic isocyanate and alicyclic isocyanate.

Abstract: It concerns a crosslinkable and foaming polyester-polyurethane resin moulding composition, comprising: an A component, comprising: A1) at least one poly-functional isocyanate compound, and A2) at least one free radical polymerization initiator a B component, comprising by weight: B1) 100 parts of at least one polyol resin comprising: —B11) 50 to 80 parts of at least one ethylenically unsaturated polyester polyol—B 12) 20 to 50 parts of at least one ethylenically unsaturated monomer, with, B11), being the reaction product of: a) an acid component comprising: a1) at least one ethylenically unsaturated diacid, and a2) at least one saturated diacid with a1/a2 molar ratio so varying to have an unsaturation content in B11) from 0.25/1 to 5/1, and, b) a diol component in excess with respect to component a) B2) from 0.01 to 1.

Abstract: Provided herein include methods and compositions pertaining to coatings, such as paints, for covering a substrate. In some aspects and embodiments the coatings may include a heat reflective metal oxide pigment that, applied to an external surface of a building (or is applied on a substrate used for an external surface of a building such as an architectural metal panel, EIFS or as a stucco top coat) reduces the energy consumption in the building. In other aspects and embodiments, provided are textured coatings having a texturing material; for example, methods and compositions are provided pertaining to textured coatings that can be applied robotically or in an automated fashion. In various aspects and embodiments, textured coatings are provided that include a texturing material and a heat reflective metal oxide pigment. In some aspects and embodiments coatings that include pumice texturing materials (for example pumice having particle sizes of greater than 150 microns) are provided.

Abstract: A multi-layer laminate includes a substrate and a resin layer. The substrate has an acrylic anti-abrasion coating layer on at least one surface. The resin layer is formed on the acrylic anti-abrasion coating layer and includes a polymerization product of a curable resin composition. The curable resin composition includes a (meth)acrylate having one or more hydroxyl groups in the molecule, a (meth)acrylate having two or more (meth)acryloyl groups in the molecule, a polyisocyanate having three or more isocyanate groups in the molecule and a photoinitiator.

Abstract: Disclosed is a resin laminate having a surface layer excellent in antistatic properties, scratch resistance, and transparency. Also disclosed is a method for producing the resin laminate with a high productivity. Further disclosed is a transfer film for use in the production of the resin laminate. The resin laminate comprises a resin shaped article, an antistatic layer containing a ?-electron conjugated conductive polymer and at least one resin selected from a polyester resin, a polyurethane resin, a polyesterurethane resin, an acrylic resin, and a melamine resin on at least one surface of the shaped article, and a cured coating film layer obtained by curing a curable resin on the antistatic layer.

Abstract: The present invention provides laminates including: (a) at least one layer of at least one polyurethane including a reaction product of components including: (i) at least one polyisocyanate; (ii) at least one branched polyol having 4 to 18 carbon atoms and at least 3 hydroxyl groups; and (iii) at least one diol having 2 to 18 carbon atoms wherein the reaction components are maintained at a temperature of at least about 100° C. for at least about 10 minutes; and (b) at least one layer of a substrate selected from the group consisting of paper, glass, ceramic, wood, masonry, textile, metal or organic polymeric material and combinations thereof; and methods of making the same.

Abstract: A surface treatment for polymeric part adhesion and a treated part is provided. In one aspect, a method for adhesively securing a part to a polymeric substrate is provided comprising providing an adhesive layer having a bonding surface having a first oxygen composition, a part having a bondable surface, and a polymeric substrate having a mating surface. Spray from an air plasma device is directed onto at least a portion of the bonding surface of the adhesive to provide a second oxygen composition on the bonding surface of the adhesive layer, with the second oxygen composition being greater than the first oxygen composition. The adhesive layer is secured between the bondable surface of the part and the mating surface of the polymeric substrate.

Abstract: Multi-layer composites comprising: (a) a first scratch-resistant coating layer comprising a first coating (primer); (b) a thermoplastic layer; and (c) a second scratch-resistant coating layer comprising a second coating (primer); wherein the first scratch-resistant coating layer and the second scratch-resistant coating layer are disposed on opposing sides of the thermoplastic layer; wherein the first coating and the second coating are not the same; and wherein the first scratch-resistant coating layer and the second scratch-resistant coating layer are selected such that a multi-layer composite having the first scratch-resistant layer disposed on both sides of the thermoplastic layer has a lower critical impact speed for tough/brittle transition at ?30° C. according to DIN EN ISO 6603-1 than a multi-layer composite having the second scratch-resistant layer disposed on both sides of the thermoplastic layer; processes for producing the same; and uses therefor.

Abstract: Articles containing thermoplastic, thermoplastic composite or thermoplastic-clad materials are made less susceptible to heat distortion by coating the article with a two-part aqueous coating composition whose first part contains a waterborne active hydrogen-functional latex binder and whose second part contains a water-dispersible polyisocyanate. One or both of the first and second parts contain non-infrared-absorptive colored pigment. A mixture of the first and second parts coated atop a vinyl substrate cures to form a vinyl-adherent, infrared-reflective colored protective film.

Abstract: Anaerobic adhesive and sealant compositions in film form, film spool assemblies containing such compositions in film form and preapplied versions thereof on matable parts are provided.

Abstract: A laminate comprises an ionomeric interlayer sheet which, in turn, comprises or is prepared from a sodium/zinc mixed ionomer that comprises carboxylate groups and a combination of counterions that consists essentially of sodium cations and zinc cations. The sodium/zinc mixed ionomer is the neutralization product of a precursor acid copolymer. The precursor acid copolymer comprises copolymerized units of an ?-olefin and an ?,?-ethylenically unsaturated carboxylic acid, and it has a melt flow rate of about 70 to about 1000 g/10 min. In addition, the precursor acid copolymer, when neutralized to a level of about 40% to about 90%, and when comprising counterions that consist essentially of sodium ions, produces a sodium ionomer that has a freeze enthalpy that is not detectable or that is less than about 3.0 j/g, when determined by differential scanning calorimetry.

Abstract: The present invention provides a polyester film for a protective material for protecting a back surface of photovoltaic cell which exhibits a good hydrolysis resistance and an excellent adhesion property to a sealing resin for photovoltaic cells.

Abstract: An infrared sensitive and chemical treatment free photosensitive composition, includes, based on weight percentage, 30-70% of a water soluble thermally cross-linking resin, 1-20% of a water-soluble photocross-linking polymerized resin, 10-50% of a photopolymerizable oligomer, 1-30% of a multifunctional monomer, 1-20% of a cationic photopolymerization initiator, and 1-20% of an infrared irradiation absorption dye. The photosensitive composition of the present invention is useful for preparation of an infrared sensitive and chemical treatment free lithographic plate. The lithographic plate of the present invention has a high sensitivity and a good mesh point reduction, and after exposure to an infrared light source, can be printed directly after being washed with tapped water or without any washing and processing step, and has a long run length.

Abstract: The present invention relates to a multilayer sheet for insert molding, in which a first thermosetting transparent resin layer protects the surface of the sheet, and a second thermoplastic transparent resin layer maintains moldability. The multilayer sheet may reduce gloss variation on the surface layer caused by change in surface microstructure of a base sheet in the multilayer sheet, which can occur during molding, and exhibits excellent scratch and abrasion resistance.

Abstract: A corrosive gas resistant laminate comprises an outer polymer layer desirably containing a volatile corrosion inhibitor therein, a corrosion gas resistant barrier layer that can be a hydrophilic polymer, and a tie layer located between said outer and said barrier layers. The various laminates have improved transmission resistance with regard to corrosive gases such as oxygen, hydrogen sulfide, and halogen gases such as chlorine. The laminates can be used to protect metal during storage and transit.

Abstract: A hot melt adhesive composition including a) at least one thermoplastic silane grafted poly-?-olefin that is solid at 25° C.; and b) at least one reaction product of a polyisocyanate having an isocyanate-reactive silane, wherein the isocyanate-reactive silane includes exactly one group reactive to an isocyanate group, selected from a hydroxyl group, a mercapto group, and an amino group, and wherein the reaction product includes a molecular weight Mw of less than 1500 g/mol.

Abstract: The invention describes novel coating agents that include a polymer, one or more latent reactive groups and one or more noncovalent linking groups, the noncovalent linking groups selected to interact with a substrate to which the coating agent is applied. The coating agents are useful for providing a coating that can be further functionalized (for example, by application of additional coating layers), or for providing desirable properties to a surface.

Abstract: An electret in disclosed including a laminate. A layer (A) containing a resin (a) and a layer (B) containing a resin (b) other than the resin (a) or an inorganic substance (c) are directly laminated. The resin (a) is a fluororesin (a1), or a resin (a2) having an alicyclic structure and containing no fluorine atom. The layer (B) is disposed on the outermost surface on a side opposite to the side where electric charge is injected at the time of injecting electric charge into the laminate to form the electret.

Abstract: A method for fabricating a coating for an implantable medical device is provided comprising applying a first polymer on at least a portion of the device to form a first layer of the coating and applying a second polymer on at least a portion of the first layer to form a second layer of the coating. The second polymer has a lower degree of hydration than the first polymer.

Abstract: Disclosed is an inner liner for a pneumatic tire, the inner liner including no less than 8 resin-layers, the resin-layer having a layer A constituted with a resin composition containing a gas barrier resin, and a layer B constituted with a resin composition containing an elastomer, at least one of the resin compositions included in the layer A and the layer B that are adjacent with each other containing a metal salt, the content of the metal salt being no less than 1 ppm and no greater than 10,000 ppm in terms of metal element equivalent, and an interlayer adhesive force between the layer A and the layer B being no less than 500 g/15 mm. The layer A and the layer B are preferably alternately laminated.

Abstract: Disclosed are a polysiloxane-modified polyhydroxy polyurethane resin derived from a reaction between a 5-membered cyclic carbonate compound and an amine-modified polysiloxane compound, and its production process; and a resin composition, thermal recording medium, imitation leather, thermoplastic polyolefin resin skin material, weather strip material, and weather strip, all of which make use of the resin.

Abstract: The present invention relates generally to electrolyte materials. According to an embodiment, the present invention provides for a solid polymer electrolyte material that is ionically conductive, mechanically robust, and can be formed into desirable shapes using conventional polymer processing methods. An exemplary polymer electrolyte material has an elastic modulus in excess of 1×106 Pa at 90 degrees C. and is characterized by an ionic conductivity of at least 1×10?5 Scm-1 at 90 degrees C. An exemplary material can be characterized by a two domain or three domain material system. An exemplary material can include material components made of diblock polymers or triblock polymers. Many uses are contemplated for the solid polymer electrolyte materials.

Abstract: Disclosed are a polysiloxane-modified polyhydroxy polyurethane resin characterized by being derived from a reaction between a 5-membered cyclic carbonate polysiloxane compound represented by the below-described formula (1) and an amine compound, and its production process; and a resin composition, thermal recording medium, imitation leather, thermoplastic polyolefin resin skin material, weather strip material, and weather strip, all of which make use of the resin.

Abstract: A light diffusion film which has excellent light transmittance and light diffusibility while maintaining excellent heat resistance, mechanical strength and thickness accuracy intrinsic to a biaxially stretched film, and is suppressed in generation of curling after heat treatment, wherein the film comprises a biaxially stretched laminated film having a supporting layer consisting of a crystalline polyester, and a light diffusion layer laminated on at least one side of the supporting layer by a co-extrusion method, wherein the light diffusion layer comprises 60 to 98 parts by mass of the crystalline polyester and 2 to 40 parts by mass of a light diffusion additive incompatible with the polyester, and the light diffusion film has a planar orientation degree (?P) of 0.080 to 0.160, a total light transmittance of 85% or more, and a haze of 30% or more.

Abstract: A laminate includes a backing material coated with an adhesive composition. The adhesive composition includes a cured silylated polyurethane composition derived from polyester based polyurethane prepolymer. The silylated polyurethane composition when partially silylated is especially useful for pressure sensitive adhesives where it imparts superior adhesive and cohesive performance thereto.

Abstract: A coating for an implantable medical device is provided comprising a first layer including a first polymer and a second layer including a second polymer. The second layer is disposed over at least a portion of the first layer. The second polymer has a lower degree of hydration than the first polymer.

Abstract: Described is a UV-curable sealant composition, which is preferably a one part sealant. The one part sealant is made from urethane acrylate, acrylate ester, precipitated silica, and photoinitiator. More specifically, the one part sealant is made from about 15-35 weight percent aliphatic and/or alicyclic urethane acrylates, about 40-70 weight percent of acrylate esters, about 0-10 weight percent of precipitated silica, and about 3-8 weight percent of photoinitiator. Also described are methods of applying UV-curable sealant composition to a surface such as a floor and UV curing the UV-curable sealant composition, thereby extending the life of the surface.

Abstract: The invention is directed to fluid-containing pouches and to methods for forming fluid-containing pouches. In one embodiment, the invention is to a fluid-containing pouch, comprising first and second opposing sheets, and a fluid (e.g., a calibrant fluid, a reactant fluid or a wash fluid) disposed between the first and second opposing sheets. The first sheet and the second sheet have a substantially liquid and gas impermeable perimeter seal. The sheets may be sealed, for example, by one or more of heat crimping, pressure crimping, heat and pressure crimping, ultrasonic welding, metal-to-metal welding or laser welding. Fluid-containing pouches sealed according to the disclosed methods and apparatuses show substantially improvement in terms of reduced gas exchange, notably CO2 pressurization levels.

Abstract: A composition for forming a gas-barrier material, comprising a polycarboxylic acid-type polymer (A) and at least a bifunctional alicyclic epoxy compound (B). The composition for forming a gas-barrier material features excellent gas-barrier property, retort resistance and flexibility, can be cured at a low temperature in a short period of time without affecting the plastic base material, and contributes to improving the productivity.

Abstract: A primer-less coating composition for facestock comprises: a binder being a water-dispersible polymer; an ethylenically unsaturated compound which is aqueous-dispersible and miscible with or bonded to said water-dispersible polymer, wherein said ethylenically unsaturated compound is able to form a covalent bond with an ink; and a crosslinker, wherein said crosslinker is suitable for binding the coating to the facestock. The coating composition may be applied to a substrate to form a printable film. A printed film in accordance with the invention may be used in a label, for example for use on a container such as a bottle.

Abstract: Use, as adhesion promoter intended for application to the surface of a substrate S1 made of thermoplastic elastomer polymer TPE which comprises a chain formed of an alteration of hard segments and of soft segments, for the purpose of the adhesive assembly of the said substrate S1 with another substrate S2, of at least one solvent of the hard segments and/or of the soft segments of the said thermoplastic elastomer polymer TPE.

Abstract: The present invention provides a composition comprising an antimicrobial bilayer coating on a substrate which coating comprises: (1) a polyionic material, in alternating layers, where one layer is a cationic polymer containing —NHR1 or —C(O)NHR2 groups, where R1 and R2 are independently hydrogen, straight- or branch-chain C1-C10 alkyl, phenyl, benzyl, or C6-C14 aryl; and another layer is an anionic polymer containing —COOH or —COOR groups, where R is straight- or branch-chain C1-C10 alkyl, phenyl, benzyl, or C6-C14 aryl; and (2) At least two full bilayers are coated on the substrate; and (3) the layers are crosslinked through amide, imide, urea, or carbamate bonds; and (4) at least 1% of the amine or amide N—H groups in the coating are converted to N—X, where X is Cl or Br. The bilayers, where an anionic outermost layer is present, is preferred. These coating compositions, applied to a substrate, are then crosslinked and finally treated with aqueous hypochlorite when N—X is N—Cl.

Abstract: A solid polymeric substrate having a resin derived from curable silylated polyurethane composition exhibiting superior properties adhered thereto. The silylated polyurethane is prepared by reacting a polyol component with a diisocyanate component to form a hydroxyl-terminated prepolymer and endcapping the prepolymer with an isocyanate silane.

Abstract: The decorative panel comprises a first backing layer made, according to its use, from a choice of different materials and geometrically defined by a base wall which in use is fastened, for example by gluing, to the surface to be covered, an upper wall parallel and opposite to said base wall and several side walls, a second layer which is arranged so as to cover the upper wall and the side walls and which consists of a pigmented two-component polyurethane base coat preferably pigmented using iron oxide pigments, a third layer which is arranged so as to cover the second layer and consists of a one-component solvent-based preferably self-curing acrylic resin mordant, a fourth layer which is arranged so as to cover the third layer and consists of a precious metal leaf for instance gold, silver or platinum leaf, and a fifth layer which is arranged so as to cover the fourth layer and is made of transparent material.

Abstract: A polarizing plastic lens comprising a polarizing film with low tendency to detachment from an optical resin layer. There is provided polarizing plastic lens comprising polarizing film constituted of a polyvinyl alcohol resin. Two optical resin layers of different thicknesses may be disposed on both surfaces of the polarizing film. The optical resin layers are formed by polymerizing a polymerization raw material composition in contact with the polarizing film. The polymerization raw material composition contains as one main component an isocyanated or isothiocyanated compound. The iscocyanate or isothiocyanate functional group reacts with the hydroxyl of polyvinyl alcohol resin of polarizing film to thereby form an urethane bond or thiourethane bond, so that the optical resin layers are strongly unified with the polarizing film.

Abstract: A polymer having at least one carbamate linkage prepared by: (i) reacting (a) at least one diisocyanate, polyisocyanate, or mixture thereof, and (b) at least one fluorinated compound selected from the formula (I): Rf(CH2)x[(CF2CF2)y(CH2CH2)z]m(R1)r—xH??(I) wherein Rf is a perfluoroalkyl group having 1 to about 6 carbon atoms; the total number of carbons in said formula (I) excluding (R1)r—XH ranges from about 8 to about 22; and (ii) optionally reacting with (c) water, a linking agent, or a mixture thereof.

Abstract: There is provided a two component polyurethane coating system which contains anti-microbial complexes consisting of phenol complexes which provide anti-microbial characteristics to the coating system and improved abrasion resistance. There is also provided substrates coated with the antimicrobial coatings.

Abstract: The present invention provides a safety laminate or solar cell module comprising an acid terpolymer containing film or sheet, wherein the acid terpolymer comprises copolymerized units derived from an ?-olefin, about 15 to about 30 wt % of an ?,?-ethylenically unsaturated carboxylic acid having 3 to 8 carbons, and about 0.5 to about 40 wt % of an ?,?-ethylenically unsaturated carboxylic acid ester having 4 to 12 carbons, based on the total weight of the acid terpolymer.

Abstract: This invention discloses a coating method of plastic molded articles, which can form multilayer coating film composed of three layers of water-based primer, water-based base paint and clear paint, the film excelling in adherability to plastic molded articles, water resistance and durability, even when low-temperature baking at not higher than 100° C. is carried out in 3-coat-1-bake system.

Abstract: The present invention relates to a non-flammable cushioning and sealing sheet and, more particularly to, a sheet having a sequential layered structure of an adhesive layer, a polyurethane layer, and a surface coating layer, the polyurethane layer containing melamine polyphosphate and diphenyl cresyl phosphate as a flame retardant. The present invention also relates to a method for preparing a non-flammable cushioning and sealing sheet that comprises: preparing a polyurethane layer containing melamine polyphosphate and diphenyl cresyl phosphate as a flame retardant; forming a adhesive layer on the one side of the polyurethane layer; and forming a surface coating layer on the other side of the polyurethane layer where the adhesive layer is not formed.

Abstract: There are provided an adhesive for connecting a circuit to be interposed between substrates having circuit electrodes thereon opposed to each other and to electrically connect the circuit electrodes on the substrates opposed to each other to the pressurizing direction under pressure, wherein the adhesive contains a compound having an acid equivalent of 5 to 500 KOH mg/g, and an adhesive for connecting a circuit to be interposed between substrates having circuit electrodes opposed to each other and to electrically connect the electrodes on the substrate opposed to each other to the pressurizing direction under pressure, wherein the adhesive comprises a first adhesive layer and a second adhesive layer, and a glass transition temperature of the first adhesive layer after pressure connection is higher than the glass transition temperature of the second adhesive layer after pressure connection.

Abstract: A primer-less coating composition for facestock comprises: a binder being a water-dispersible polymer; an ethylenically unsaturated compound which is aqueous-dispersible and miscible, with or bonded to said water-dispersible polymer, wherein said ethylenically unsaturated compound is able to form a covalent bond with an ink; and a crosslinker, wherein said crosslinker is suitable for binding the coating to the facestock. The coating composition may be applied to a substrate to form a printable film. A printed film in accordance with the invention may be used in a label, for example for use on a container such as a bottle.

Abstract: A laminated product has a multilayer structure comprising an optical base and a cured polyurethane resin layer formed thereon from a moisture-curable polyurethane resin and/or a precursor therefor. The polyurethane resin layer is formed by applying a coating fluid comprising a moisture-curable polyurethane resin and/or precursor therefor and a solvent having a boiling point of 70° C. or higher and a solubility parameter of 8 or larger. Also provided is a coating material comprising a radical-polymerizable monomer ingredient, a silicone or fluorochemical surfactant, and a photochromic compound. In producing a photochromic optical article, excellent adhesion between a base and a photochromic layer is attained.

Abstract: Coated articles may comprise one or more coating layers, including water resistant coatings. A method comprises applying such coating layers by dip, spray or flow coating. The methods can make coated containers, preferably comprising polyethylene terephthalate, from coated preforms. In some methods, the aqueous solutions, dispersions, or emulsions are substantially or completely free of VOCs.

Abstract: A fibrous polyurethane composite and a method for its manufacture is provided comprising a first polymer constituent further comprising a polyurethane catalyst and an active hydrogen compound possessing at least two active hydrogen functional groups, a second polymer constituent further comprising a polyisocyanate pre-polymer, and a fibrous sheet material. In another aspect the fibrous polyurethane composite further comprises a third polymer constituent further comprising at least one active-hydrogen containing fluorinated compound and a polyurethane catalyst.

Abstract: A multilayered film which is formed using a solventless adhesive, can obviate wetting deficiency even when the film is manufactured by applying the solventless adhesive to a film by coating at a high speed, exhibits the excellent laminate strength and the excellent impact resistance after a liquid content is filled into a packaging container and exhibits excellent environment friendliness, a method of manufacturing the multilayered film, and a packaging container which uses the multilayered film are provided. In the multilayered film which is formed by laminating at least an inner-layer film, an adhesive layer and an outer-layer film in order, the adhesive layer is formed of a solventless adhesive which contains a polyester-based main agent and a curing agent made of aliphatic isocyanate and alicyclic isocyanate.

Abstract: A multilayer lignocellulose-containing molding comprising A) a middle layer or a plurality of middle layers comprising lignocellulose-containing particles which is/are obtainable by using a binder (a) and B) a covering layer or a plurality of covering layers comprising lignocellulose-containing particles which is/are obtainable by using a binder (b), the binder (a) being selected from the group consisting of (a1) formaldehyde resins and (a2) an organic isocyanate having at least two isocyanate groups; the binder (b) comprising the following components: an aqueous component (I) comprising (i) a polymer A which is composed of the following monomers: a) from 70 to 100% by weight of at least one ethylenically unsaturated mono- and/or dicarboxylic acid (monomer(s) A1) and b) from 0 to 30% by weight of at least one further ethylenically unsaturated monomer which differs from the monomers A1 (monomer(s) A2) and, optionally, (ii) a low molecular weight crosslinker having at least two functional groups which a

Abstract: A laminate includes a backing material coated with an adhesive composition. The adhesive composition includes a silylated polyurethane obtained from the silylation of a polyurethane prepolymer derived from the reaction of polybutadiene polyol and polyisocyanate; and an additional adhesive component.

Abstract: To provide a pressure-sensitive adhesive sheet used during processing articles such as semiconductor wafers and laminate sheet used for such a pressure-sensitive adhesive sheet, which does not contaminate or break the semiconductor wafers during the processing and can minimize the curl of the articles due to residual stress of the pressure-sensitive adhesive sheet, a multi-layer sheet includes a composite film containing a urethane polymer and a vinyl-based polymer as effective components and a first film made of a material different from that of the composite film, wherein the urethane polymer is formed from a polyolefin diol and a polyisocyanate. A pressure-sensitive adhesive sheet is obtained by providing a pressure-sensitive adhesive layer on at least one side of the multi-layer sheet.