Blended pressure-sensitive adhesives

Details Blended pressure-sensitive adhesives Blended pressure-sensitive adhesives

C - Chemistry, Metallurgy

09

J

C09J 201/00 (2006.01) C09J 7/02 (2006.01)

Patent

CA 2241032

A pressure-sensitive adhesive comprising a blend of at least two components, wherein the first component is at least one pressure-sensitive adhesive and the second component is at least one thermoplastic material, wherein the components form a blended composition having more than one domain and, wherein one domain is substantially continuous (generally, the pressure-sensitive adhesive) and the other domain is substantially fibrillous to schistose (generally, the thermoplastic material). The second component can be (a) at least one thermoplastic elastomer, (b) at least one elastomer with a tackifying resin or (c) at least one elastomer.

Un adhésif adhérant sous l'effet d'une pression comprend un mélange d'au moins deux composants dont le premier constitue au moins un adhésif adhérant sous l'effet d'une pression et le deuxième constitue au moins un matériau thermoplastique. Ces composants forment une composition mélangée comprenant plusieurs domaines. Lorsqu'un domaine est pratiquement continu (il s'agit en général de l'adhésif adhérant sous l'effet d'une pression), l'autre domaine est alors fibrillé à schisteux (c'est, en général, le matériau thermoplastique). Le deuxième composant peut être: a) un élastomère thermoplastique au moins, b) un élastomère au moins, additionné d'une résine gluante, ou c) un élastomère au moins.

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