| 简介 |
PROBLEM TO BE SOLVED : To provide an antistatic acrylic adhesive which solves problems in an optical use caused by static electrification when a conventional antistatic adhesive is peeled off, and which is excellent in transparency and re-peelability.
SOLUTION : The re-peelable antistatic acrylic adhesive for an optical member includes : an acrylic copolymer (A) which has a hydroxyl group and an alkylene oxide chain in its side chains and is obtained by solvent polymerization of monomers containing 1-30 wt.% of a monomer having a hydroxyl group (where an acrylic copolymer having a carboxyl group is excluded); an ionic compound (B) containing one cation selected from the group consisting of lithium, iron, copper, sodium, potassium and quaternary ammonium cations; and a curing agent (C) which is a trifunctional isocyanate compound. The re-peelable antistatic acrylic adhesive for an optical member has an adhesive strength of 200 g/25 mm or less in a 180 degree peel test on a glass plate in an atmosphere of 23°C-65% RH at a tensile speed of 300 mm/min.
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