| 摘要 |
The present invention relates to pressure-sensitive adhesive compositions including interpenetrating polymer networks in a cured state, which comprise a multi-functional acrylate, a photo initiator and a thermal initiator; polarizers; and liquid crystal displays comprising the same. In the present invention, a pressure-sensitive adhesive composition is provided, which can prevent light-leakage phenomenon, and has excellent physical properties such as endurance under high temperature and/or high humidity conditions and workability, such as removability. |
| 主权项 |
1. A polarizer, comprising:
a polarizing film or a polarizing device; and a pressure-sensitive adhesive layer disposed on one or both sides of the polarizing film or the polarizing device, the pressure-sensitive adhesive layer comprising a cured product of the pressure-sensitive adhesive composition, wherein the pressure-sensitive adhesive composition includes an interpenetrating polymer network in a cured state, wherein the composition comprises an acrylic copolymer, a multi-functional crosslinking agent, a multi-functional acrylate, a photo free-radical initiator and a thermal free-radical initiator, of which has a 10 hours half-life temperature of not less than 40° C. and less than 100° C., wherein the composition comprises 5 to 40 parts by weight of the multi-functional acrylate, 0.01 to 10 parts by weight of the photo free-radical initiator and 0.01 to 5 parts by weight of the thermal free-radical initiator, relative to 100 parts by weight of the acrylic copolymer, and wherein both of the photo free-radical initiator and the thermal free-radical initiator react with the multi-functional acrylate, wherein the interpenetrating polymer network is a state in which the pressure-sensitive adhesive composition comprises a crosslinking structure formed from reactions of the multifunctional acrylate, the photo free-radical initiator and the thermal free-radical initiator, together with an additional crosslinking structure formed from reactions of the acrylic copolymer and the multi-functional crosslinking agent, wherein the pressure-sensitive adhesive composition has a form of pressure-sensitive adhesive having re-movability in the cured state, and the pressure-sensitive adhesive has an adhesion strength with respect to alkali-free glass of 800 gf/25 mm or less, and wherein a light transmission uniformity of the polarizer is 22 to 50%. |
