Antistatic acrylic pressure-sensitive adhesive
An acrylic and adhesive technology, applied in the direction of adhesives, conductive adhesives, adhesive types, etc., can solve the problems of reduced electrical conductivity, etc., and achieve the effects of excellent re-peelability, good storage stability, and excellent transparency
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Synthetic example 1
[0158] The acrylic copolymer (A) which consists of the monomer of the composition ratio shown in Table 1 was obtained as follows.
[0159] That is, using a four-necked flask equipped with a stirrer, a reflux cooling pipe, a nitrogen gas introduction pipe, a thermometer, and a dropping funnel, an appropriate amount of 46% by weight of 2EHA [meaning that in "68% by weight" listed in Table 1] was added to the reaction kettle. 46% by weight of ; the same below], 50% by weight of BA, 50% by weight of 2HEA, the total amount of AM90G, ethyl acetate as a solvent, and azobisisobutyronitrile as an initiator, for about 1 hour A solution obtained by adding an appropriate amount of the total amount of remaining monomers, ethyl acetate, and azobisisobutyronitrile was added dropwise, and polymerized at about 80° C. for 5 hours under a nitrogen atmosphere. After the reaction was complete, it was cooled and diluted with ethyl acetate. The solid content of this reaction solution was 40%, the v...
Synthetic example 2
[0161] The acrylic copolymer (A) which consists of the monomer of the composition ratio shown in Table 1 was obtained as follows.
[0162] That is, using a four-necked flask equipped with a stirrer, a reflux cooling pipe, a nitrogen introduction pipe, a thermometer, and a dropping funnel, an appropriate amount of 44% by weight of 2EHA, 50% by weight of 2HEA, and the total amount of M40G were added to the reaction kettle as Ethyl acetate as a solvent, azobisisobutyronitrile as an initiator, add an appropriate amount of the remaining monomers, ethyl acetate, and azobisisobutyronitrile dropwise over a period of about 1 hour. Polymerization at about 80°C for 5 hours. After the reaction was complete, it was cooled and diluted with ethyl acetate. The solid content of this reaction solution was 41%, the viscosity was 1200 mPa.s, and the Mw (weight average molecular weight) was 350,000.
Synthetic example 3
[0164] The acrylic copolymer (A) which consists of the monomer of the composition ratio shown in Table 1 was obtained as follows.
[0165] That is, using a four-necked flask equipped with a stirrer, a reflux cooling pipe, a nitrogen introduction pipe, a thermometer, and a dropping funnel, an appropriate amount of 35% by weight of 2EHA, 30% by weight of BA, 30% by weight of 2HEA, Ethyl acetate as a solvent, azobisisobutyronitrile as an initiator, and an appropriate amount of 42% by weight of 2EHA, 40% by weight of BA, 40% by weight of 2HEA, and 30% by weight of M90G were added dropwise over about 1 hour. %, ethyl acetate, and azobisisobutyronitrile were polymerized at about 80° C. for 1 hour under a nitrogen atmosphere.
[0166] Then, add an appropriate amount of the remaining monomers, ethyl acetate, and azobisisobutyronitrile dropwise over a period of about 1 hour, and polymerize at about 80° C. for 5 hours under a nitrogen atmosphere. After the reaction, it was cooled and d...
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