MULTI-LAYERED PRESSURE-SENSITIVE ADHESIVE ARTICLE AND PRESSURE-SENSITIVE ADHESIVE SHEET

摘要

The present invention provides a multi-layered PSA article having higher interlayer adhesive strength. The multi-layered PSA article of the present invention comprises a PSA layer (A) formed from a PSA composition (a) comprising as a primary component an acrylic polymer (a) obtained by polymerizing a monomer composition (a), a PSA layer (B) formed from a PSA composition (b) comprising as a primary component an acrylic polymer (b) obtained by polymerizing a monomer composition (b), and an intermediate layer (C) placed between the PSA layer (A) and the PSA layer (B), wherein the acrylic polymer (a) and the acrylic polymer (b) comprise an acidic group, and the intermediate layer (C) is formed from an intermediate layer composition (c) comprising a polymer (c) having a primary to tertiary amino group.

主权项

1. A multi-layered pressure-sensitive adhesive article comprising:
a pressure-sensitive adhesive layer (A) formed from a pressure-sensitive adhesive composition (a) comprising as a primary component an acrylic polymer (a) obtained by polymerizing a monomer composition (a); a pressure-sensitive adhesive layer (B) formed from a pressure-sensitive adhesive composition (b) comprising as a primary component an acrylic polymer (b) obtained by polymerizing a monomer composition (b); and an intermediate layer (C) placed between the pressure-sensitive adhesive layer (A) and the pressure-sensitive adhesive layer (B), wherein the acrylic polymer (a) and the acrylic polymer (b) comprise an acidic group, and the intermediate layer (C) is formed from an intermediate layer composition (c) comprising a polymer (c) having a primary to tertiary amino group.