Gummibasierte Mehrschichtige Druckempfindliche Klebstoffanordnung mit Geringen Flüchtigen Organischen Verbindungseigenschaften

Details

Veröffentlichungs-Nr.

EP3336153

Aktenzeichen

EP16204949

Anmeldetag

19. Dezember 2016

Veröffentlichung

25. November 2020

Erteilung

25. November 2020

Rechtsraum

EP

IPC

C09J7/38C09J133/04C09J7/22C09J7/26C09J153/02

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 the polymeric foam comprises: a) a multi-arm block copolymer having 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 having 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; and wherein the first pressure sensitive adhesive comprises: a) a linear block copolymer having the formula M - (G)<p>, wherein M 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 p is 1 or 2; b) at least one second hydrocarbon tackifier; c) a (meth)acrylate copolymer having a Tg higher than 25°C and a weight average molecular weight (Mw) comprised between 1000 and 100.000 Daltons, and comprising: (i) (meth)acrylic acid ester monomer units having a Tg higher than 25°C when homopolymerized; and (ii) optionally, monofunctional ethylenically unsaturated comonomer units; d) optionally, a multi-arm block copolymer having the formula Sq-Z, wherein: (i) S represents an arm of the multi-arm block copolymer and each arm independently has the formula G-N, (ii) q represents the number of arms and is a whole number of at least 3, and (iii) Z is the residue of a multifunctional coupling agent, wherein each N is a rubbery block comprising a polymerized conjugated diene, a hydrogenated derivative of a polymerized conjugated diene, or combinations thereof; and e) optionally, a diblock copolymer having the formula T - (G), wherein T is a rubbery block comprising a polymerized olefin, a polymerized conjugated diene, a hydrogenated derivative of a polymerized conjugated diene, or any combinations thereof. 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