Kautschukbasierte, Mehrschichtige, Druckempfindliche Haftklebeanordnung

Details

Veröffentlichungs-Nr.

EP3020774

Aktenzeichen

EP14193229

Anmeldetag

14. November 2014

Veröffentlichung

28. Dezember 2022

Erteilung

28. Dezember 2022

Rechtsraum

EP

IPC

C09J153/02C09J7/22C09J7/38

Abstract

The present disclosure relates to a multilayer pressure sensitive adhesive assembly comprising a polymeric foam layer and a first pressure sensitive adhesive layer adjacent to the polymeric foam layer, wherein first the pressure sensitive adhesive comprises: a) a multi-arm block copolymer of the formula Q n -Y, wherein: (i) Q represents an arm of the multi-arm block copolymer and each arm independently has the formula G-R, (ii) n represents the number of arms and is a whole number of at least 3, and (iii) Y is the residue of a multifunctional coupling agent, wherein each R is a rubbery block comprising a polymerized conjugated diene, a hydrogenated derivative of a polymerized conjugated diene, or combinations thereof; and each G is a glassy block comprising a polymerized monovinyl aromatic monomer; b) a polymeric plasticizer having a weight average molecular weight Mw of at least 10.000 g/mol; c) at least one hydrocarbon tackifier, wherein the hydrocarbon tackifier(s) have a Volatile Organic Compound (VOC) value of less than 1000 ppm, when measured by thermogravimetric analysis according to the weight loss test methods described in the experimental section; and d) optionally, a linear block copolymer of the formula L-(G) m , wherein L is a rubbery block comprising a polymerized olefin, a polymerized conjugated diene, a hydrogenated derivative of a polymerized conjugated diene, or any combinations thereof; and wherein m is 1 or 2; wherein the multilayer pressure sensitive adhesive assembly is obtained by hotmelt coextrusion of the polymeric foam layer and the first pressure sensitive adhesive layer. The present disclosure also relates to a method of manufacturing such a multilayer pressure sensitive adhesive assembly and uses thereof.

Anmelder

Firma

3M Innovative Properties Company

Land

🇺🇸 USA

Fachgebiete