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US 10,239,981 B2Granted
Pressure-sensitive adhesive composition
AssigneeLG Chem, Ltd.
InventorsMin Ki Lee, No Ma Kim, Jeong Ae Yoon, Sung Soo Yoon, Su Jeong Kim
Life of this patent
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Abstract
The present invention relates to a pressure-sensitive adhesive composition. The pressure-sensitive adhesive composition of the present invention exhibits excellent dependability under a high temperature or high humidity condition, and also has excellent stress relaxation property and reworkability when being applied to a polarizing plate, and thus, it can effectively prevent warpage. Accordingly, the pressure-sensitive adhesive composition can be usefully applied for an optical film.
Claims13
A pressure-sensitive adhesive composition comprising:
- a block copolymer including 5 parts by weight to 40 parts by weight of a first block having a glass transition temperature of 50° C. or more, and 60 parts by weight to 95 parts by weight of a second block having a glass transition temperature of −10° C. or less;
- and a multifunctional compound having two or more radical polymerization groups,
- wherein the first block consists of an alkyl (meth)acrylate monomer as a polymerization unit, and the second block comprises 90 to 99.9 parts by weight of an acrylic acid ester monomer and 0.1 to 10 parts by weight of a copolymerizable monomer having a thermosetting functional group as a polymerization unit, and
- wherein the multifunctional compound is a multifunctional acrylate comprising a cyclic structure.
1 more element
Dependencies are inferred from the claim text.