| 摘要 |
Provided are a pressure sensitive adhesive composition, a protective film, an optical film and a display device. The pressure sensitive adhesive composition shows appropriate low-speed and high-speed peel strengths after formation of a cross-linked structure, and has a superior balance between the two. Accordingly, when the pressure sensitive adhesive composition is applied to a protective film, for example, a superior protection effect as well as easy peel-off upon high-speed peeling, which is advantageous for a high-speed process, are shown, and in addition, a superior antistatic property may be obtained during the process. |
| 主权项 |
1. A pressure sensitive adhesive composition, comprising:
a polymer that comprises, as polymerized units, a first monomer which is represented by the following Chemical Formula 1 and in which the total number of carbon atoms in the A and B of Chemical Formula 1 is not less than 1 and less than 3; a second monomer which is represented by the following Chemical Formula 1 and in which the total number of carbon atoms in the A and B of Chemical Formula 1 is not less than 3; and a compound represented by the following Chemical Formula 2, and that satisfies the General Formulae 1 to 3; and a cross-linking agent including both an aliphatic cyclic isocyanate compound and an aliphatic acyclic isocyanate compound, wherein the pressure sensitive adhesive composition includes the cross-linking agent in an amount of 4.5 to 10 parts by weight relative to 100 parts by weight of the polymer, wherein a peel strength of the pressure sensitive adhesive composition, measured at a peel angle of 180 degrees and a peel rate of 30 m/min with respect to an adherent whose surface energy is 30 mN/m or less under a state where a crosslinking structure is formed is from 10 gf/25 mm to 150 gf/25 mm: wherein Q is hydrogen or an alkyl group, A and B are each independently an alkylene group or an alkylidene group, and n is a number from 0 to 10, wherein Q is hydrogen or an alkyl group, U is an alkylene group or an alkylidene group, Z is an alkyl group or an aryl group, and m is a number from 1 to 20,
2≦O/P≦5 [General Formula 1]O+P≦X [General Formula 2]1 weight %≦O+P+X≦18 weight % [General Formula 3] wherein O is an amount by weight % of the first monomer in the polymer, P is an amount by weight % of the second monomer in the polymer, and X is an amount by weight % of the compound of Chemical Formula 2 in the polymer. |
