Post-curable rubber-based pressure-sensitive adhesive

Abstract

The present disclosure is directed to a curable precursor of a pressure sensitive adhesive comprising a) a (co)polymeric material comprising a rubber-based elastomeric material; b) a polyfunctional aziridine curing agent; and c) an acid generating agent. The present disclosure is also directed to a method of manufacturing such pressure sensitive adhesives and uses thereof.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of European Patent Application 14193191.5 filed November 14, 2014, the disclosure of which is incorporated herein by reference in its entirety. technical field [0003] This disclosure relates generally to the field of adhesives, and more particularly to the field of pressure sensitive adhesives (PSAs). The present disclosure also relates to methods of making such pressure sensitive adhesives and uses thereof. Background technique [0004] Adhesives have been used for a variety of marking, securing, protecting, sealing and masking purposes. Tapes generally include a backing or substrate and an adhesive. One type of adhesive that is particularly preferred for many applications is represented by pressure sensitive adhesives. [0005] In fact, pressure sensitive tape is ubiquitous in homes and workplaces. In the simplest construction of a pressure sensitive tape, it includes an adh...

AI Technical Summary

Problems solved by technology

However, the moisture sensitivity of these known systems is not as expected because of the decomposition of superacids required for UV-induced cationic curing or crosslinking of the epoxy functionality to hydronium ions, rendering the epoxy resin unable to undergo ring-opening polymerization.

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