Tesa Ag

Tesa Se

Teas Se

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Marc Husemann

Stephan Zöllner

Stephan Z&ouml;llner

Thilo Dollase

Matthias Koop

Frank Hannemann

Bernd Lühmann

Reinhard Storbeck

Renke Bargmann

Thorsten Krawinkel

Kai Ellringmann

Andreas Westphal

James L Hedrick

Craig Jon Hawker

Uwe Schümann

William Dinan Hinsberg

Bernd L&uuml;hmann

Hermann Neuhaus-Steinmetz

Marco Kupsky

Sven Hansen

Jan Ellinger

Klaus Massow

Kay Brandes

Werner Karmann

Bernd Dietz

Frank Henke

Nils Utesch

Maren Klose

Christian Ring

Michael L Morrison

Claus Meyer

Daniel Klier

Stephen Zoellner

Kai Tom Wörden

Nico Diamantis

Stephen Zöllner

Markus Peters

Gabriel Dalmis

Martin Losch

Torsten Runge

Ulf Cartellieri

Niko Lübbert

Heiko Thiede

Stephan ZÖLLNER

The invention relates to an adhesive tape comprising at least one layer of a pressure-sensitive acrylate adhesive comprising a polymer component and at least one additive, where the polymer component is composed of one or more copolymers each based on the following monomers: a) from 5 to 35% by weight of one or more monomers containing hydroxy groups and having a copolymerizable double bond; b) from 0 to 50% by weight of one or more acrylate and/or methacrylate monomers each having at least one amide group, urethane group, urea group, or carboxylic anhydride unit and/or ethylene glycol unit, c) from 15 to 95% by weight of an alkyl (meth)acrylate, where the alkyl moiety has from 1 to 14 carbon atoms, where the pressure-sensitive acrylate adhesive comprises one or more 2-(2H-Benzotriazol-2-yl) derivatives admixed as additive; and also a corresponding adhesive.

Use of pressure-sensitive adhesive tapes for optical applications

Pressure-sensitive adhesive mass comprising an at least partially cross-linked polyacrylate, based on a monomer mixture comprising a) an acrylic acid ester of the formula CR&#x2550;C(R)(COOR), b) an acrylic acid of the formula CR&#x2550;C(R)(COOH), c) olefinically unsaturated monomers having at least one functional group, and d) 0 to 95 wt. % of acrylic acid ester of the formula CR&#x2550;C(R)(COOR), and 20 to 60 parts by weight of at least one tackifying resin.

Pressure-sensitive adhesive mass for low energy or rough surfaces

The invention relates to an adhesive film comprising a fleece carrier (T) and two layers made of heat activated adhesive compounds () arranged on both sides of the fleece carrier, characterized in that both adhesive compounds () are permeated in the fleece carrier (permeation regions Tand T) such that a total of between 20% and 92% of the fiber intermediate volume of the fleece carrier (T) is saturated by the adhesive compound, providing that the adhesive compounds (T, T) permeated on both sides of the fleece carrier (T, T) each make up at least 10% of the fiber intermediate volume of the fleece carrier (T) in the composition.

Carrier reinforced heat activated adhesive compounds

The invention relates to a double-sided adhesive tape, comprising a carrier layer and two exterior pressure-sensitive adhesive compound layers, wherein at least one of the pressure-sensitive adhesive compounds is the crosslinking product composed of a polymer compound which comprises at least the following components: A) a polymer component (component A) comprising 88 to 100 wt % of one or more polyacrylates (component A1) composed of at least: a) 1 to 15 wt %, relative to component A1, of one or more monomers having at least one ethylenically unsaturated bond, each being selected such that the glass transition temperatures Tof the corresponding homopolymers composed of the respective monomers are at least 0&#xb0; C. (monomers a), wherein at least some of the monomers (a) still comprise at least one carboxylic acid (monomers a1), b) 85 to 99 wt %, relative to component A1, of one or more monomers from the group of acrylic acid esters and methacrylic acid esters, each being selected such that the glass transition temperatures Tof the corresponding homopolymers composed of the respective monomers are not higher than &#x2212;30&#xb0; C. (monomers b), B) at least one covalently cross-linking bifunctional or polyfunctional crosslinking agent (component B), wherein components A and B in total amount to at least 95 wt % of the polymer compound, and wherein the at least one crosslinking agent is added in a quantity such that the quantity ratio V=n/nof the substance quantity nof the crosslinking-active centers of the crosslinking agent to the theoretical substance quantity nof the macromolecule of polymer component A1 has a value between 0.15 and 0.60, wherein the substance quantity nof the crosslinking-active centers of the crosslinking agent is obtained from the mass mof the crosslinking agent, multiplied by the number f of crosslinking-active centers per crosslinking agent molecule, divided by the molecular weight Mof the crosslinking agent, that is, n=f&#xb7;m/M, and the theoretical substance quantity nof the macromolecule of polymer component A1 is obtained from the mass mof the polymer component in the pressure-sensitive adhesive compound, divided by the average molecular weight Mof said component, that is n=m/M.

Pressure-sensitive adhesive tapes for gluing windows, in particular in mobile devices

The invention relates to a pressure-sensitive adhesive. It is envisaged that the pressure-sensitive adhesive comprises a first layer and a second layer, the first layer being a heat-activatable pressure-sensitive adhesive which has a static glass transition temperature Tor a melting point Tof at least +30&#xb0; C.; and the second layer being a polyacrylate pressure-sensitive adhesive which has a static glass transition temperature of not more than +15&#xb0; C.

Adhesive material

A method and an adhesive bond optical components, such that a first optical component is bonded to a second optical component with the adhesive, wherein the adhesive comprises at least an acid anhydride-modified vinylaromatic block copolymer, a metal chelate, and a tackifier resin, and the adhesive has a transmittance of greater than 86% and a haze of less than 5%.

Pressure-sensitive adhesive mass

Pressure-sensitive adhesive tape made of a flat, support material each side of which is coated with a pressure-sensitive adhesive, the pressure-sensitive adhesive on at least one side being produced from a monomer mixture comprising a monomer of the formula CH&#x2550;CH(R)(COOR), where R&#x2550;H or CHand Ris an alkyl radical having 1 to 10 carbon atoms or H and the homopolymer possesses a static glass transition temperature of &#x3c;&#x2212;30&#xb0; C.

Method for mounting printing plates to printing cylinders or sleeves with adhesive tape

Transparent acrylate pressure-sensitive adhesive comprising a filler, the acrylate-pressure sensitive adhesive comprising a polyacrylate and particles of silicate and/or of silica gel. The particles of silicate and/or of silica gel have a size of not more than 50 nm. The acrylate pressure-sensitive adhesive is prepared by a process in which acrylates and comonomers are polymerized in the presence of at least one organic solvent or in bulk, the particles of silicate and/or of silica gel being mixed in before or after the polymerization.

Transparent acrylate adhesive mass comprising a filler

A pressure-sensitive adhesive comprising a blend of at least two components, one of which comprises a block copolymer having at least the unit P(A1)-P(B1)-P(A1) and the second of which comprises a block copolymer having at least the unit P(B2)-P(A2)-P(B2); the blend forming an at least two-phase system.

Adhesive masses based on block copolymers of structure P(A)-P(B)-P(A) and P(B)-P(A)-P(B)

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&#xb0; 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.

Method for stamping thermally activatable adhesive materials which are not tacky at room temperature

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,

Bilayer pressure-sensitive adhesives

Method for producing a polyacrylate adhesive compound by a hot-melt method in which a polyfunctional &#x3b1;-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.

Method for producing crosslinked acrylate hot-melt adhesive compounds

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.

Bimodal acrylate pressure-sensitive adhesive compounds

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.

Heat-activatedly bondable 2D element

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&#xb0; C. and at least one of said glass transition temperature lower than &#x2212;20&#xb0; 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%.

Adhesive sheet based on nitrile rubber blends for attaching metal parts to plastics

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Hamburg, Germany

Marc Husemann