| 主权项 |
1. An adhesive composition for forming a peelable adhesive layer, the composition comprising:
a copolymer (A), the copolymer (A) being a copolymer of:
a hydroxyl group-containing (meth)acrylamide (a1), the hydroxyl group-containing (meth)acrylamide (a1) including at least one of a hydroxyl group-containing acrylamide and a hydroxyl group-containing methacrylamide, the hydroxyl group-containing (meth)acrylamide (a1) being represented by the following formula: H2C═C(R1)ACONHCH2CH2OH, in which:
R1 is H or CH3,A is a linking group, the linking group being (COOCH2CH2)n, COOCH2CH2OOC—CH2CH2, or Compound 1 represented by Chemical Formula 1: andn is 1 or 2, anda (meth)acrylate (a2), the (meth)acrylate (a2) including at least one of an acrylic ester and a methacrylic ester, the (meth)acrylate (a2) including at least one of methyl (meth)acrylate, ethyl (meth)acrylate, n-butyl (meth)acrylate, t-butyl (meth)acrylate, isobutyl (meth)acrylate, hexyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, n-octyl (meth)acrylate, isooctyl (meth)acrylate, n-nonyl (meth)acrylate, isononyl (meth)acrylate, n-decyl (meth)acrylate, isodecyl (meth)acrylate, n-dodecyl (meth)acrylate, n-tridecyl (meth)acrylate, n-tetradecyl (meth)acrylate, methoxyethyl (meth)acrylate, ethoxyethyl (meth)acrylate, butoxyethyl (meth)acrylate, cyclohexyl (meth)acrylate, t-butylcyclohexyl (meth)acrylate, phenoxyethyl (meth)acrylate, nonylphenoxy polyethylene glycol (meth)acrylate, benzyl (meth)acrylate, isobornyl (meth)acrylate, n-butyl acrylate, and tetrahydrofurfuryl (meth)acrylate,wherein the copolymer (A) includes about 0.1 to about 10% by weight of the hydroxyl group-containing (meth)acrylamide (a1) and about 50 to about 99.1% by weight of the (meth)acrylate (a2) based on a total weight of the copolymer (A); and an antistatic agent (B), the adhesive composition including about 0.01 to about 2.0% by weight of the antistatic agent (B), and the antistatic agent (B) including an ionic compound, wherein: the copolymer (A) is crosslinked, the copolymer (A) has a polystyrene conversion weight-average molecular weight of about 300,000 to about 1,000,000 as determined by gel permeation chromatography, the composition has a gel fraction, at 3 days at 23° C. under a relative humidity of 50%, of about 90 to about 100% as a crosslinking degree, the composition has an adhesive force of about 0.05 (N/25 mm) to about 0.2 (N/25 mm) measured according to JIS Z0237, the ionic compound is at least one selected from a pyridinium salt, an alkyl pyrrolidium salt, and N-methyl-N-propylpiperidinium bis(trifluoromethanesulfonyl)imide, and the composition provides an adhesive layer that has a sheet resistance of about 1×108 to about 1×1011 Ω/cm2. |
