Tesa Se

Benjamin Pütz

Stephan Zöllner

Bernd Lühmann

Alexander Prenzel

Helmut Ritter

Kai Ellringmann

Nils Thebud

Sarah Bamberg

Kristin Kerber

Stephan Bernt

Elisabetta Ardente

Markus Peters

Lisa Wieghardt

Ralf Kretzmer

Sarah Zimmermann

Julia BEFUß

Pressure-sensitive adhesives, adhesive tapes, and methods enable high bond strengths on non-polar or rough substrates. The pressure-sensitive adhesives and methods comprise (a) at least one poly(meth)acrylate, (b) at least one resin A selected from colophony resins and terpene-phenolic resins, (c) at least one hydrocarbon resin B1 having a softening point of greater than 50° C., and (d) at least one hydrocarbon resin B2 having a softening point of less than or equal to 25° C. The adhesive tapes comprise one or more layers of the pressure-sensitive adhesives, and the methods may produce adhesive bonds on substrates with low surface energy and/or on substrates with a mean roughness of at least 5 μm.

Pressure-sensitive adhesive

A repulpable pressure-sensitive adhesive useful on polar and apolar papers and storage-stable comprises a polymer whose parent monomer composition comprises: Also disclosed is an adhesive tape comprising the pressure-sensitive adhesive, and use of the pressure-sensitive adhesive and/or the adhesive tape for producing water-soluble bonds.

Pressure-sensitive adhesive for paper bonds

Crosslinkable adhesive compound comprising at least a first base polymer component having functional groups suitable for covalent crosslinking and for coordinative crosslinking, and comprising at least one covalent crosslinker and at least one coordinative crosslinker, wherein the coordinative crosslinker is present in molar excess in relation to the covalent crosslinker.

Adhesive compound in particular for curved surfaces

The invention relates to an adhesive tape which can be used in particular in a method for connecting two fiber-reinforced plastic components, comprising a carrier material made of polyethylene, wherein a polyacrylate-based self-adhesive compound is applied to one side of the carrier material, said adhesive compound can be reduced to the following reactant mixture containing monomers having the following composition: A1) acrylic acid ester, and/or methacrylic acid ester of the following formula CH&#x2550;CH(R)(COOR), wherein R=H or CHand Ris an alkyl chain with 1 to 14 carbon atoms at a proportion of between 65 to 98 wt. %, A2) acrylates and/or methacrylates whose alcohol component contains at least one primary hydroxyl- or carboxyl-group, and/or with acrylate-copolymerizable vinyl compounds containing the at least one primary hydroxyl or carboxyl group at a proportion of between 1 to 20 wt. %, A3) multi-functional isocyanate cross-linker which blocks with thermally reversible protective groups at a proportion of between 1-10 wt. %, A4) and, if the proportions of A1), A2) and A3) do not add up to 100 wt. %, olefinically unsaturated monomers having functional groups, with a proportion of 0 to 15 wt. %.

Method for connecting two fiber-reinforced plastic components

A pressure-sensitive adhesive comprising at least 60 wt % of a polymer blend, where the polymer blend consists of a first polymer component A, a second polymer component B, and optionally one or more further polymer components (C, D, . . . ), where the first polymer component A is present at not less than x wt % in the polymer blend, where 90&#x2264;x&#x2264;99, and where the second polymer component B and any further polymer components C, D, . . . present are present in total at y wt % in the polymer blend, where y=100&#x2212;x, where each polymer component (A, B, C, . . . ) derives to an extent of at least 60 wt % from (meth)acrylic monomers, wherein none of the polymer components (A, B, C, . . . ) is homogeneously miscible at room temperature with any of the other polymer components (A, B, C, . . . ), and so a multi-phase system is present.

Pressure-sensitive adhesives for bonding flexible printing plates

End-group-functionalized oligomers with controlled degrees of functionality based on styrene are produced by reacting the monomer with a regulator by means of free-radical polymerization. At least some of the quantity of regulator is added according to a prescribed program so that at every juncture t the value of the quantitative fraction added up to said juncture does not fall short of the value of the respective conversion U(t) in the polymerization reaction at said juncture t by more than 5 percentage points and does not exceed said value U(t) by more than 5 percentage points.

Process for producing short-chain end-group-functionalized macromolecules based on styrene

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.

Crosslinked pressure-sensitive adhesives (PSAs) based on polymers of branched macromolecules each comprising a main chain and one or more sidechains pendent to the main chain, the constitutional units thereof originating from a) X wt % of one or more acrylic and/or methacrylic esters, with 80&#x3c;=X&#x3c;=99.5; b) Y wt % of radically copolymerizable monomers having at least one acid function, with 0.5&#x3c;=Y&#x3c;=15; c) Z wt % of vinyl compounds, with 0&#x3c;=Z&#x3c;=5, at least one sidechain pendent to the main chain having a number-average molar mass &#x3e;=1000 g/mol, and the respective amounts of constitutional units originating from a), b) and c) can be the same in each case or differ by not more than 1%, and where a), b) and c) may in each case be the same or different monomers, have detachment properties which can be set independently of one another.

Growing community of inventors

Hamburg, Germany

Benjamin Pütz