Tesa Se

Marco Kupsky

Thilo Dollase

Kai Ellringmann

Uwe Schümann

Sebastian Dietze

Alexander Fischer

Markus Brodbeck

Matthias Koop

Marc Husemann

Stephan Zöllner

Klaus Keite-Telgenbüscher

Alexander Prenzel

Kirstin Weiland

Lars Guldbrandsen

Patrick Kerep

Kerstin Klingeberg

Heike Simonis

Daniel Klier

Claus Meyer

German Patino

Jessika Gargiulo

Duc Hung Nguyen

Lars Gulbrandsen

Philipp Preuss

Stefan Zollner

Olaf Gōrbig

Bastian Wedel

The invention relates to a polymer obtainable by the radical polymerization of at least one monomer, namely one or more (meth)acrylate monomers and optionally, in addition, vinylic comonomers, wherein the polymer has a molar mass Mof at least 5,000 g/mol and at most 200,000 g/mol and at least one of the monomers is functionalized with at least one epoxy group, wherein the proportion of the epoxide-functionalized monomer(s) (a) is more than 30 wt %.

Functionalized (co)polymers for adhesive systems

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 present invention relates to an adhesive tape and to a method for jacketing an elongated item, more particularly cable sets. The adhesive tape must cure within the operational dictates for further processing, e.g. within 6 min, and after curing must exhibit the required dimensional stability properties. However, the adhesive compositions must not cure during storage itself, since otherwise they can no longer be used. Nor may the curing temperatures be too high, since otherwise the lead insulation, which is often made of PVC, may suffer damage. The invention proposes a method for jacketing an elongated item such as more particularly leads or cable sets, where a tape which comprises a moisture-curing binder on a carrier is first impregnated with water and immediately thereafter is guided in a helical line around the elongated item or the elongated item is wrapped in an axial direction by the adhesive tape, the elongated item together with the adhesive tape wrapping is brought into the desired disposition, more particularly into the cable set plan, the elongated item is held in this disposition, while the curable adhesive cures. Alternatively proposed is a method for jacketing an elongated item such as more particularly leads or cable sets, where a tape which comprises a moisture-curing binder on a carrier is guided in a helical line around the elongated item or the elongated item is wrapped in an axial direction by the adhesive tape, the elongated item together with the adhesive tape wrapping is brought into the desired disposition, more particularly into the cable set plan, the elongated item is held in this disposition, and the curable adhesive is brought to cure by the supply of moisture.

Moisture-curable adhesive tape and method for jacketing elongated items, especially leads

Single- or double-sided adhesive tapes and methods at least partly encapsulate an (opto)electronic structure. The tapes and method include a carrier and at least one layer of a curable adhesive composition having the following components: (A) 20% to 99.9% by weight (based on the entirety of the curable adhesive composition) of a (co)polymer functionalized with epoxy groups and having a weight-average molar mass of at least 5000 g/mol, based on more than 30% to 100% by weight, (based on the entirety of the parent monomers of the epoxy-functionalized (co)polymer) of at least one type of (meth)acrylic (co)monomer (a) functionalized with an epoxy group; and (B) 0.1% to 5% by weight (based on the entirety of the curable adhesive composition) of at least one curing agent configured to induce curing of the (co)polymer (A) with reaction of its epoxy groups by thermal means and/or by supply of UV radiation.

Water vapor-blocking adhesive compound having highly functionalized poly(meth)acrylate

The invention relates to a dispersion comprising one or more protic solvents as dispersion medium and also, as base components dispersed therein,

Curable adhesive compound and reactive adhesive tapes based thereon

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.

Primer for adhesive tape with improved adhesion promoting properties, comprising a mixture G, which is dissolved or dispersed in one or more solvents, consisting of at least one copolymer obtained by copolymerization of a monomer mixture comprising an amount of at least 90 wt % of the following monomers: vinylcaprolactam and/or vinylpyrrolidone; one or more of the monomers a) and/or b): a) acrylic acid ester of a linear, primary alcohol having 2 to 10 carbon atoms in the alkyl group of the alcohol, b) acrylic acid ester of a branched, non-cyclic alcohol having 3 to 12 carbon atoms in the alkyl group, at least one chlorinated polyolefin, and at least one metal compound selected from the group consisting of metal acetylacetonates, metal alkoxides and alkoxy-metal acetylacetonates.

Primer for adhesive tapes

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

Crosslinked pressure-sensitive adhesive comprising at least one base polymer component obtainable by free-radical copolymerization of the following monomers:

Pressure-sensitive adhesives for bonding printing plates

The invention relates to a primer, comprising a mixture dissolved or dispersed in one or more solvents, the mixture composed of a copolymer obtained through copolymerization, preferably free-radical copolymerization, of vinylcaprolactam and/or vinylpyrrolidone, and one or more of the following monomers: a) an acrylic acid ester of a linear primary alcohol containing 2 to 10 carbon atoms in the alkyl group of the alcohol, b) an acrylic acid ester of a branched, non-cyclic alcohol having 4 to 12 carbon atoms in the alkyl group of the alcohol, and c) acrylic acid; one or more organofunctional silanes; a dye or a pigment based on a metal complex or a metal oxide, wherein the metal oxide is of a spinel-type. Such primer provide reliable and excellent adhesion between pressure-sensitive adhesive tapes and hydrophilic surfaces, in particular glass, and ensures at the same time a good coloration of the primer, thereby producing an opaque primer layer.

Black silane primer for improving the adhesion of adhesive tapes to glass surfaces

The invention relates to a primer, comprising a mixture dissolved or dispersed in one or more solvents, the mixture composed of Such primer provides reliable and excellent adhesion between pressure-sensitive adhesive tapes and hydrophilic surfaces, in particular glass. The adhesion-promoting effect is retained even when the primer additionally contains functional fillers.

Silane primer for improving the adhesion of adhesive tapes on hydrophilic surfaces, especially glass surfaces

The invention relates to adhesive masses containing at least one electroluminescent additive, single and double-sided adhesive strips which are provided with adhesive masses of said type, and to the use of said adhesive masses for sticking together electronic components.

Electroluminescent adhesive masses

The invention relates to a pressure-sensitive supporting material, which can be (intrinsically) heated by an inner heat source, and to the use thereof. The heatable supporting material is characterized in that the supporting material comprises a pressure-sensitive adhesive layer inside of which heat is generated. The pressure-sensitive adhesive layer is a pressure-sensitive adhesive compound, which can be heated by electric current, induction, a chemical reaction or by a physical phase transition. The heatable supporting material has a high heating capacity and is suited for producing pressure-sensitive tapes for adhering heatable mirrors.

Growing community of inventors

Quickborn, Germany

Marco Kupsky