Abstract: The present invention relates to a pressure-sensitive adhesive mass based on polyurethane, wherein the polyurethane is composed of the following starting materials in the specified proportions, said starting materials being reacted catalytically with each other: a) at least one aliphatic or alicyclic polyisocyanate, wherein the functionality thereof is less than or equal to 3 in each case; b) a combination of at least one polypropylene glycol diol and at least one polypropylene glycol triol, wherein the ratio of the number of hydroxyl groups of the diol component to the number of hydroxyl groups of the triol component is less than 10, wherein the ratio of the number of isocyanate groups to the total number of hydroxyl groups is between 0.65 and 1.

Abstract: The invention relates to an adhesive mass, comprising a mixture containing at least one ethylene vinyl acetate copolymer with an ethylene vinyl acetate component of 30 to 70 wt. % and a rosin/pentaerithritol resin with a softening range of 80° C. to 120° C., the resin component being between 20 and 40 wt. % based on the ethylene vinyl acetate copolymer, wherein the adhesive mass has a light transmission of at least 86% as per ASTM D 1003 and the adhesive mass has a Haze value of a maximum of 5% as per ASTM D 1003.

Abstract: Method for producing diecuts from heat-activatable adhesive films which comprises applying a layer of heat-activatable adhesive material to a carrier material having a glass transition temperature at least 20° C. lower that that of the adhesive, laminating the heat-activatable layer onto a release liner at a temperature between the glass transition temperature of the release liner and heat activatable adhesive and then diecutting the heat-activatable adhesive layer on the release liner.

Abstract: The present invention relates to the use of an adhesive mass at least containing an acid-anhydride-modified vinyl aromatic block copolymer, a metal chelate, and an adhesive resin for bonding optical components, particularly optical films, wherein the adhesive mass has a transmittance greater than 86% and a haze less than 5%.

Abstract: The invention relates to a bilayer pressure-sensitive adhesive. Provision is made for the bilayer pressure-sensitive adhesive to comprise an apolar layer and a polar layer, the apolar layer and the polar layer each comprising a polyacrylate pressure-sensitive adhesive having a static glass transition temperature of not more than +15° C., and the surface energy of the apolar layer differing from the surface energy of the polar layer by at least 5 mN/m.

Abstract: A method glues two plastic surfaces together with adhesion produced by a heat-activatable adhesive. The adhesive is a heat-activatable adhesive, which is based on i) at least one elastomer having a weight proportion of 30-70 wt. % ii) at least one reactive resin component having a weight proportion of 30-70 wt. %. At least one of the plastic surfaces that is to be glued is part of a substrate having a heat conductivity that is high enough to transfer the activation energy necessary for the adhesion to the heat-activatable adhesive.

Abstract: A method glues two plastic surfaces together via an adhesion produced by a heat-activatable adhesive. An adhesive, which is used as a heat-activatable adhesive, is based on i) at least one thermoplastic having a softening temperature or melting temperature in the region of between 90 and 120° C.

Abstract: Method for producing a polyacrylate adhesive compound by a hot-melt method in which a polyfunctional ?-cleaving initiator, which is present as an oligomer, is added to the polymer to be crosslinked prior to the hot-melt method and ultraviolet crosslinking is carried out after treatment in the hot-melt method.

Abstract: The invention relates to a component formed from metal, at least in sections, wherein a thermoplastic plastic layer is molded around the metal region at least partially, and wherein an adhesion promoter layer comprised of a heat activatable elastic material is disposed between the plastic layer and the metal region at least in areas, said elastic material being heat activatable at least at the side thereof facing the plastic layer, for making a bonded connection between the metal region and the plastic layer.

Abstract: Presented is a heat-activatedly bondable 2D element having a first adhesive and a second adhesive, which is suitable for bonding objects with a metal surface to objects with a plastic surface, and which enables a stable and mechanically robust bond even at low temperatures. This is achieved through the use of particular combinations of different adhesives, tailored to one another and based on synthetic nitrile rubbers and reactive resins.

Abstract: The invention relates to a polyacrylate which as a result of a polymerization process has a broad, bimodal molecular weight distribution. These acrylate pressure-sensitive adhesives are preferably processed from the melt. The low molecular weight fraction lowers the flow viscosity, while the high molecular weight fraction results in the achievement of a high shear strength, following appropriate crosslinking, for the acrylate pressure-sensitive adhesive.

Abstract: A method for producing circuit boards, comprising a process for modifying a flexible circuit board, in particular for the stabilization thereof, characterized by at least the following method steps: a) providing a planar formation (“reinforcement plate”) having lower flexibility than that of the flexible circuit board, b) hot laminating an adhesive film, which can be activated by heat, on the reinforcement plate, c) placing the laminate made of adhesive film and reinforcement plate with the adhesive film side on the flexible circuit board, d) introducing the component made of reinforcement plate, adhesive film, and flexible circuit board into a partial vacuum atmosphere, e) hot laminating the component with application of pressure and heat.

Abstract: Heat-activable adhesive sheet of an adhesive comprising a blend of at least three synthetic nitrile rubber compositions S1, S2 and S3, each of which comprises at least one synthetic nitrile rubber, and at least one reactive resin which is capable of crosslinking with itself, with other reactive resins and/or with the nitrile rubbers of synthetic rubber compositions S1, S2 and S3, in which a) the blend of the heat-activable sheet being microphase-separated, characterized by at least three different glass transition temperatures in a DSC, b) at least one of said glass transition temperatures being greater than 10° C. and at least one of said glass transition temperature lower than ?20° C., c) the nitrile rubber or rubbers S1 having an acrylonitrile fraction of greater than/equal to 35%, d) the nitrile rubber or rubbers S2 having an acrylonitrile fraction of greater than 25% and less than 35%, e) the nitrile rubber S3 having an acrylonitrile fraction of less than/equal to 25%.

Abstract: For the production of a double-sided pressure-sensitive adhesive tape, having a closed and open side, possessing a carrier film (e) provided on both sides with a pressure-sensitive adhesive layer (c,c?), the carrier film (e) being a filmlike carrier film not based on rubber, and there bring at least one release film located on the closed side, on the one pressure-sensitive adhesive layer (c), it is envisaged that, from the melt, two identical or different pressure-sensitive adhesives for the pressure-sensitive adhesive layers (c,c?), a film-forming polymer for the carrier film (e), and a film-forming polymer for the release film be formed, that these components be combined to form a composite, and the at the pressure-sensitive adhesives be crosslinded by means of physical and/or radiation-chemical treatment.

Abstract: The invention discloses a method for producing an antenna system having at least one metal antenna unit and at least one carrier unit, wherein said antenna unit is connected in a first connection step to a heat-activated surface element, which can be glued, and the heat-activated surface element, which can be glued, is connected in a second connection step to the carrier unit, wherein the heating of said surface element in the second connection step occurs through said antenna unit. Furthermore, a surface element which is particularly suitable for this method and the products obtained therefrom are disclosed.

Abstract: A pressure-sensitive adhesive tape having pressure-sensitive adhesive layers on a top side and a bottom side, and a carrier film between the adhesive layers, wherein there is a white coating layer at least between the pressure-sensitive adhesive layer on the top side and the carrier film and there is a metallic layer at least between the pressure-sensitive adhesive layer on the bottom side and the carrier film. The pressure-sensitive adhesive tape is useful to bonding parts of optical liquid crystal displays. Optical liquid crystal displays containing the pressure-sensitive adhesive tape are also disclosed.

Abstract: A Polyacrylate having an at least bimodal molecular weight distribution is disclosed.

Abstract: The invention relates to an adhesive surface element for producing liquid crystal displays, wherein the surface element comprises the following sequence of layers: first adhesive layer (11), carrier (12), metal layer (13), absorbance layer (14), second adhesive layer (5), and whereby the absorbance layer (14) is a layer having carbon black that is not adhesive at room temperature and/or that is a primer, and the first adhesive layer (11) is colored translucent white over the entire thickness thereof: The invention further relates to the use of such a surface element for producing and/or adhering liquid crystal display systems, wherein the second adhesive mass (15) is adhered to the surface of a liquid crystal display element, and a liquid crystal display system having a liquid crystal display element (1), a protective element, and a frame element, wherein at least two of said elements are connected by means of the above surface element.

Abstract: The use of a pressure sensitive adhesive possessing anisotropic properties for producing punched products.

Abstract: Electrically heatable pressure-sensitive adhesive compound, comprising at least one adhesive constituent and at least one electrically conductive filler.