Adhesive composition for polarizing plate, polarizing plate including same, and optical display including same
An adhesive, polarizing plate technology, applied in the direction of film/sheet adhesive, optics, adhesives, etc., can solve the creep characteristics, peel strength reliability, poor reworkability of light leakage, can not use polarizing plate, Consume cost and time and other issues to achieve good reworkability, high gel fraction, and good light leakage prevention.
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preparation example 1
[0136]In a 1000ml reactor equipped with a thermometer, a stirrer, a nitrogen feed tube and a reflux condenser, put 100 parts by weight of n-butyl acrylate, 14.4 parts by weight of acryloyl morpholine, 7.3 parts by weight of 4-hydroxy Butyl ester and 0.015 parts by weight of N,N-(dimethylamino)ethyl acrylate, followed by adding 66 parts by weight of methyl ethyl ketone as a solvent and stirring the components for 30 minutes while purging with nitrogen. The reactor was heated to an internal temperature of 60°C, and 0.08 parts by weight of azobisdimethylvaleronitrile and 0.013 parts by weight of 2-mercaptoethanol were added as initiators to the mixture, followed by reaction at 60°C for 2 hours . 0.13 parts by weight of azobisdimethylvaleronitrile was further added to the mixture, followed by further reaction for 2 hours. Then, the reactor was cooled to room temperature, thereby preparing a tertiary amino group-containing (meth)acrylic copolymer (solid content: 52.0%). The prepa...
preparation example 2
[0138] In a 1000ml reactor equipped with a thermometer, a stirrer, a nitrogen feed tube and a reflux condenser, put 100 parts by weight of n-butyl acrylate, 14.4 parts by weight of acryloyl morpholine, 7.3 parts by weight of 4-hydroxy Butyl ester and 0.015 parts by weight of N,N-(dimethylamino)ethyl acrylate, followed by the addition of 106 parts by weight of methyl ethyl ketone as a solvent and the components were stirred for 30 minutes while purging with nitrogen. The reactor was heated to an internal temperature of 60°C, and 0.08 parts by weight of azobisdimethylvaleronitrile as an initiator was added to the mixture, followed by reaction at 60°C for 2 hours. 0.13 parts by weight of azobisdimethylvaleronitrile and 0.05 parts by weight of 2-mercaptoethanol were further added to the mixture, followed by further reaction for 2 hours. Then, the reactor was cooled to room temperature, thereby preparing a tertiary amino group-containing (meth)acrylic copolymer (solid content: 35.0...
preparation example 3
[0140] 100 parts by weight of n-butyl acrylate, 14.4 parts by weight of acryloyl morpholine and 7.3 parts by weight of 4-hydroxyacrylic acid butyl ester, followed by adding 66 parts by weight of methyl ethyl ketone as a solvent and stirring the components for 30 minutes while purging with nitrogen. The reactor was heated to an internal temperature of 60°C, and 0.08 parts by weight of azobisdimethylvaleronitrile and 0.013 parts by weight of 2-mercaptoethanol were added as initiators to the mixture, followed by reaction at 60°C for 2 hours . 0.13 parts by weight of azobisdimethylvaleronitrile was further added to the mixture, followed by further reaction for 2 hours. Then, the reactor was cooled to room temperature, thereby preparing a (meth)acrylic copolymer (solid content: 52.0%) not containing a tertiary amino group. The weight average molecular weight (g / mol) of the prepared (meth)acrylic copolymer containing no tertiary amino group was 400,000 g / mol, and the glass transit...
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