Tesa Se

Kai Ellringmann

Marco Kupsky

Kristin Kerber

Uwe Schümann

Stefan Wulf

Stephan Zöllner

Thilo Dollase

Sebastian Dietze

Marc Husemann

Thorsten Krawinkel

Duc Hung Nguyen

Bernd Lühmann

CHristoph Nagel

Kirstin Weiland

Anika Petersen

Benjamin Pütz

Nils Utesch

Claus Meyer

Philipp Preuβ

Elisabetta Ardente

Clementine Pradier

Jochen Fiencke

Philipp Preuss

Franziska Eberhardt

Philipp Preub

Stephan Zoellner

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

Composite made of two substrates for use for optical, electronic and/or precision-engineered equipment, comprising a first substrate and a second substrate and, arranged so as to connect the first substrate to the second substrate, an adhesive layer, wherein the adhesive layer comprises an adhesive which has, relative to the mixture, (a) from 60% by weight to 90% by weight of a first polymer component based on polyacrylate and (b) from 10% by weight to 40% by weight of a second polymer component based on elastomers, where the second polymer component is essentially not miscible with the first polymer component, so that the adhesive is present in at least two separate phases in the adhesive layer.

Pressure-sensitive adhesive tapes for the adhesive bonding of windows more particularly in mobile equipment

Pressure-sensitive adhesives and methods, for bonding flexible printing plates, comprising at least one adhesive component comprising at least one polymer component based on a monomer mixture comprising at least one of the following monomers: at least one acrylic ester; at least one methacrylic ester; acrylic acid; and methacrylic acid. The pressure-sensitive adhesives further comprise 1 to 30 wt %, based on the overall blend of the at least one adhesive component without solvent, of a polyvinyl acetate.

Pressure-sensitive adhesives for bonding flexible printing plates

A pressure-sensitive adhesive comprising at least one adhesive component comprising at least one polymer component based on a monomer mixture comprising at least one of the following monomers:

The invention relates to a repulpable adhesive comprising orthophosphoric acid, to adhesive tapes comprising at least one layer of such an adhesive, and to the use of adhesive tapes of this kind.

Repulpable adhesives

The invention relates to a novel, reactive 2-component adhesive system, preferably in film form, for adhering diverse materials, such as for example, metal, wood, glass and/or plastic.

Reactive 2-component adhesive system

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

Pressure-sensitive adhesive composition, having at least one polymer component formed of a monomer mixture of at least (a) one acrylic ester and/or methacrylic ester of the formula CH&#x2550;C(R)(COOR), where R&#x2550;H and Ris a linear alkyl radical with 2 to 10 C atoms or a branched alkyl radical with at least 4 C atoms, (b) at least one N-alkyl substituted acrylamide, (c) at least one acrylic ester and/or methacrylic ester of the formula CH&#x2550;C(R)(COOR), where R&#x2550;H or CHand Ris a linear alky radical with at least 12 C atoms, (d) acrylic acid and/or methacrylic acid.

Adhesive composition for adhering printing plates to impression cylinders for flexographic printing

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

Adhesive tape suitable for flying splice of flat web material having non-polar surfaces which has been wound to form rolls, the adhesive tape comprising an upper self-adhesive composition (), a splittable carrier () and a lower self-adhesive composition () on the bottom face of the splittable carrier (), wherein as upper self-adhesive composition () a silicone-free self-adhesive composition is used which has a bond strength to a polyethylene substrate of 1.5 N/cm or more (measurement method tesa test A) and an initial tack corresponding to a rolling distance of 200 mm or less (measurement method tesa test D), and as lower self-adhesive composition () a self-adhesive composition is used which has a bond strength to a polyethylene substrate of 1.5 N/cm or more (measurement method tesa test A) and a complex viscosity of 10,000 Pa&#xb7;s or more at 1 rad/s and 40&#xb0; C. (measurement method tesa test F).

Adhesive tape and its use

The invention relates to pressure-sensitive adhesive tapes for flying splice of flat web materials, having at least one splittable carrier and two layers of adhesive, at least one of the adhesives being a silicone PSA, more particularly an electron-beam-crosslinked silicone PSA, and also to a method of producing them. The silicone PSA advantageously has at least one polydiorganosiloxane having the structure &#x2014;Si(R)&#x2014;O&#x2014;[Si(R)&#x2014;O]&#x2014;Si(R)&#x2014;, where the 2n+4 substituents R independently of one another are monovalent hydrocarbon radicals and n is an integer, and also at least one resin ('MQ resin') constructed from (R)SiO&#x2014; units ('M units') and SiOunits (&#x201c;Q units&#x201d;), the substituents Rof the M units being independently of one another alkyl groups, alkenyl groups, alkylsilyl groups, hydroxyl groups or hydrogen.

Growing community of inventors

Hamburg, Germany

Kai Ellringmann