Touch panel
A touch panel, one-sided technology, applied in the field of pressure-sensitive adhesive composition, pressure-sensitive adhesive sheet, can solve the problem of reduced visibility
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preparation example 1
[0080] Preparation example 1: the preparation of acrylic resin (A)
[0081] 97 parts by weight of n-butyl acrylate (n-BA) and 3 parts by weight of acrylic acid (AA) were introduced into a 1 L reactor which was refluxed with nitrogen inside and installed with a condenser for easy temperature control. Subsequently, 120 parts by weight of ethyl acetate (EAc) as a solvent and 0.03 parts by weight of 2-mercaptoethanol as a chain transfer agent were introduced thereto. Then, nitrogen was purged for 60 minutes to remove oxygen, and 0.04 parts by weight of a reaction initiator, azobisisobutyronitrile (AIBN), was introduced thereinto with the temperature kept at 60° C., followed by allowing the mixture to react for 8 hours. After the reaction, the reactant was appropriately diluted with ethyl acetate (EAc) to obtain a solid content of 30% by weight, a weight average molecular weight of 800,000 and a polydispersity index (M w / M n ) is an acrylic resin (A) of 2.7. Here, the weight av...
preparation example 2
[0082] Preparation Example 2: Preparation of Acrylic Resin (B)
[0083] Acrylic resin (B) was prepared according to the method of Preparation Example 1 except that 93 parts by weight of n-butyl acrylate (n-BA) and 7 parts by weight of acrylic acid were introduced into the reactor as monomers. The acrylic resin (B) had a solid content of 30% by weight, a weight average molecular weight of 850,000, and a polydispersity index of 2.8.
preparation example 3
[0084] Preparation Example 3: Preparation of Acrylic Resin (C)
[0085] Acrylic acid was prepared according to the method of Preparation 1, except that 98.5 parts by weight of n-butyl acrylate (n-BA) and 1.5 parts by weight of 2-hydroxyethyl methacrylate (2-HEMA) were introduced as monomers in the reactor Resin-like (C). The acrylic resin (C) had a solid content of 30% by weight, a weight average molecular weight of 700,000, and a polydispersity index of 2.3.
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