JP2015183179A5

JP2015183179A5 -

Info

Publication number: JP2015183179A5
Application number: JP2014063918A
Authority: JP
Filing date: 2014-03-26
Publication date: 2016-12-08
Anticipated expiration: 2034-03-26

Description

製造例（Ａ１）〔重合体（Ａ）の製造〕：
撹拌機、還流冷却管、窒素導入管、温度計、滴下管を備えた反応装置に窒素雰囲気下、２−エチルヘキシルアクリレート２５部、イソノニルアクリレート１５部、シクロヘキシルアクリレート１０部、４−ヒドロキシブチルアクリレート０．２５部、重合開始剤であるアゾビスイソブチロニトリルを適量、さらに溶剤として酢酸エチルを仕込んだ。溶液温度が８０℃になるまで加熱した。
次いで、滴下管に２−エチルヘキシルアクリレート２５部、イソノニルアクリレート１５部、シクロヘキシルアクリレート１０部、４−ヒドロキシブチルアクリレート０．２５部、重合開始剤であるアゾビスイソブチロニトリルを適量、さらに溶剤として酢酸エチルを仕込んだ。
前記反応装置を溶液温度が８０℃になるまで加熱し、反応装置内で反応が開始したことを確認後、前記滴下管から溶液を２時間かけて滴下した。滴下終了後、反応温度を約８０℃に保持し５時間反応を継続した後、冷却を開始した。次いで酢酸エチルで希釈し、不揮発分を４０％に調整した。これにより重量平均分子量は９０万の重合体（Ａ１）溶液を得た。
Production Example (A1) [Production of Polymer (A)]:
A reactor equipped with a stirrer, a reflux condenser, a nitrogen inlet tube, a thermometer, and a dropping tube, under a nitrogen atmosphere, 25 parts 2-ethylhexyl acrylate, 15 parts isononyl acrylate, 10 parts cyclohexyl acrylate, 4-hydroxybutyl acrylate 0 .25 parts, an appropriate amount of azobisisobutyronitrile as a polymerization initiator, and ethyl acetate as a solvent were charged. Heated until the solution temperature reached 80 ° C.
Next, 25 parts of 2-ethylhexyl acrylate, 15 parts of isononyl acrylate, 10 parts of cyclohexyl acrylate, 0.25 part of 4-hydroxybutyl acrylate, an appropriate amount of azobisisobutyronitrile as a polymerization initiator, and a solvent as a solvent Ethyl acetate was charged.
The reactor was heated until the solution temperature reached 80 ° C., and after confirming that the reaction had started in the reactor, the solution was dropped from the dropping tube over 2 hours. After completion of dropping, the reaction temperature was kept at about 80 ° C. and the reaction was continued for 5 hours, and then cooling was started. Subsequently, it diluted with ethyl acetate and the non volatile matter was adjusted to 40%. As a result, a polymer (A1) solution having a weight average molecular weight of 900,000 was obtained.