Multilayer adhesive tape
AssigneeTesa SE
InventorsAlexander PRENZEL, Ji Li, Julia Befuss
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Abstract
Disclosed are powerful adhesive tapes, which rapidly coat rough and/or curved surfaces with different surface energies and thereby build up high adhesion. The adhesive joints formed in this way furthermore have good shear strength, even at elevated temperatures. Finally, enduring mechanical loading on the adhesive joints does not lead to the adhesive tape peeling from the surface. This is achieved with an adhesive tape comprising at least one foamed layer and at least one adhesive compound layer, wherein the adhesive compound layer contains at least one poly(meth)acrylate, and the poly(meth)acrylate is cross-linked with at least one covalent and at least one coordinative cross-linker.
Claims5
An adhesive tape comprising:
- at least one foamed layer comprising a poly(meth)acrylate A which is derivable from a monomer composition comprising:
- a1) 40 to 77 wt % of at least one (meth)acrylic ester having a homopolymer glass transition temperature of not more than −40° C. and an alcohol component based on a branched, primary alcohol;
- a2) 20 to 40 wt % of at least one (meth)acrylic ester whose alcohol component is based on a linear C1-C18 alcohol;
- 3) 0 to 20 wt % of at least one (meth)acrylic ester whose alcohol component is based on a cyclic alcohol;
- and
- a4) 3 to 20 wt % of acrylic acid,
- and
- at least one pressure-sensitive adhesive layer comprising at least one poly(meth)acrylate and the at least one poly(meth)acrylate is crosslinked with at least one covalent crosslinker and at least one coordinative crosslinker, and wherein the pressure-sensitive adhesive layer is free of accelerators for the crosslinking reaction.
Dependencies are inferred from the claim text.