MULTILAYER PRESSURE-SENSITIVE ADHESIVE FILMS WITH A (METH)ACRYLIC-BASED ELASTOMERIC MATERIAL

摘要

The present invention is directed to a multilayer pressure sensitive adhesive (PSA) film, having a first pressure sensitive adhesive layer and at least an opposing layer, wherein the first pressure sensitive adhesive layer comprises a pressure-sensitive adhesive composition with a (meth)acrylic-based elastomeric material comprising a reaction product of polymerizable material comprising:
(a) a first monomer which is an alkyl (meth)acrylate ester of a primary alcohol R1—OH, the alkyl (meth)acrylate ester being of Formula (I);CH2═C(R2)—(CO)—OR1   (I)whereinR1 is an alkyl having 14 to 25 carbon atoms and the primary alcohol R1—OH has an iso index equal to at least 2 but no greater than 4;R2 is hydrogen or methyl; and(b) a second monomer having an ethylenically unsaturated group;

wherein the at least one opposing layer comprises at least one filler material.

The invention is also directed to a method for the manufacturing of such a multilayer PSA film and its use.

主权项

1. A multilayer pressure sensitive adhesive (PSA) film, having a first pressure sensitive adhesive layer and at least one opposing layer, characterized in that the first pressure sensitive adhesive layer comprises a pressure-sensitive adhesive composition with a (meth)acrylic-based elastomeric material comprising a reaction product of polymerizable material comprising:
(a) 50 to 99.5 weight percent of a first monomer based on the total weight of the polymerizable material, wherein the first monomer is an alkyl (meth)acrylate ester of a primary alcohol R1—OH, the alkyl (meth)acrylate ester being of Formula (I)
CH2═C(R2)—(CO)—OR1   (I)wherein
R1 is an alkyl having 14 to 25 carbon atoms and the primary alcohol R1—OH has an iso index equal to at least 2 but no greater than 4; R2 is hydrogen or methyl; and (b) 0.5 to 50 weight percent of a second monomer based on the total weight of the polymerizable material, wherein the second monomer has an ethylenically unsaturated group;wherein the at least one opposing layer comprises from 1 to 30 weight percent of at least one filler material based on the weight of the opposing layer.