Tesa Se

Teas Se

Matthias Koop

Marc Husemann

Thilo Dollase

Frank Hannemann

Marco Kupsky

Thorsten Krawinkel

Sven Reiter

Jan Ellinger

Daniel Schmitz-Stapela

Alexander Fischer

Markus Brodbeck

Philipp Preuss

Niko Lübbert

Susanne Katz

Jerome Stoltze

Ralph Schreiber

The invention relates to an adhesive film which comprises a layer of an adhesive that comprises one or more polymers and at least one peroxide, characterized in that the adhesive comprises at last 50% by weight of thermoplastic polymers that do not have C&#x2550;C multiple bonds, in that at least one peroxide has the general structural formula R&#x2014;O&#x2014;O&#x2014;R', wherein R and R&#x2032; each represent organyl groups or together represent a cyclic organyl group, and in that the peroxide in solution has a 1-minute half-life temperature of less than 200&#xb0; C. In a preferred embodiment, the thermoplastic polymer is a polyurethane and the peroxide is a dicumyl peroxide.

Latent reactive adhesive film

The invention relates to a thermally curable adhesive compound consisting of the following components: (A) 4.9 to 34.9 wt % (relative to the total amount of the curable adhesive compound) of an epoxide-functionalized (co)polymer having a weight-average molar mass in the range of 5,000 g/mol to 200,000 g/mol, based on more than 30 to 100 wt %, preferably 50 to 100 wt %, (relative to the total amount of the monomers on which the epoxide-functionalized (co)polymer is based) of at least one type of (meth)acrylic (co)monomer (a) functionalized with an epoxy group, (B) 0.1 to 5 wt % (relative to the total amount of the curable adhesive compound) of at least one thermally activatable curing agent for a cationic curing of epoxides, (C) 65 to 95 wt % (relative to the total amount of the curable adhesive compound) of at least one type of matrix polymer as a film-forming agent, (D) optionally 0 to 30 wt % of additional components.

Curable adhesive compound and reactive adhesive tapes based thereon

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

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

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

Pressure-sensitive adhesives containing at least one functionalized polymer or block polymer having a weight average of the molar mass distribution of between 5,000 g/mol and 200,000 g/mol and a difference between Mand Mwhich is lower than 25,000 g/mol, where Mrepresents the peak molar mass of a monomodal polymer or the peak molar mass of the smallest mode in a bimodal or multimodal polymer and Mrepresents the lowest molar mass in the molar mass distribution, defined at each point where the cumulative frequency of the molar mass distribution has a value of 0.05, the functionalized polymer or block polymer carries at least one type of functionalization that can be used for a subsequent cross-linking and the at least one type of functionalization of the functionalized polymer results from the use of at least one type of functionalized monomer during the production of the functionalized polymer.

Functionalized polymers or contact adhesive masses

Method for producing contact adhesive masses containing acrylic, by coupling at least one component to at least one other reactive constituent contained in at least one other component, the at least one reactive constituent having at least two functional groups and the at least one constituent in the at least one other component containing at least two functional groups.

Method for producing contact adhesive masses containing acrylic

An adhesive sheet comprising at least one heat-activatable adhesive based on a blend of at least one nitrile rubber S1 and at least one nitrile rubber S2, said at least one nitrile rubber S1 having an acrylonitrile fraction of not more than 25% by weight and said at least one nitrile rubber S2 having an acrylonitrile fraction of not less than 30% by weight, and at least one reactive resin.

Growing community of inventors

Norderstedt, Germany

Matthias Koop