ACRYLIC RESIN SOLUTION, ACRYLIC PRESSURE-SENSITIVE ADHESIVE COMPOSITION, ACRYLIC PRESSURE-SENSITIVE ADHESIVE, ACRYLIC PRESSURE-SENSITIVE ADHESIVE FOR OPTICAL ELEMENT, OPTICAL ELEMENT WITH PRESSURE-SENSITIVE AGENT LAYER, AND METHOD OF PRODUCING ACRYLIC RESIN SOLUTION

摘要

PROBLEM TO BE SOLVED: To provide a solution-based acrylic pressure-sensitive adhesive of a bridge agent curable type, which enables heavy-thickness coating and can obtain a heavy-thickness pressure-sensitive adhesive layer.SOLUTION: This acrylic resin solution contains an acrylic resin (A) obtained by polymerizing a monomer component (a) containing a (meth)acrylic acid alkyl ester-based monomer as a main component under the existence of an organic solution (b) whose chain transfer constant to the organic solution of a vinyl acetate at a temperature of 60°C is not smaller than 250. The weight average molar weight of the acrylic resin (A) is 50,000 to 300,000, and a solid content concentration of the resin solution is not lower than 60%.