WO2022186292A1 - エポキシ樹脂、それらの製造方法、それらを用いたエポキシ樹脂組成物及び硬化物 - Google Patents
エポキシ樹脂、それらの製造方法、それらを用いたエポキシ樹脂組成物及び硬化物 Download PDFInfo
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- WO2022186292A1 WO2022186292A1 PCT/JP2022/008944 JP2022008944W WO2022186292A1 WO 2022186292 A1 WO2022186292 A1 WO 2022186292A1 JP 2022008944 W JP2022008944 W JP 2022008944W WO 2022186292 A1 WO2022186292 A1 WO 2022186292A1
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- WIPO (PCT)
- Prior art keywords
- epoxy resin
- group
- resin composition
- dihydroxy
- cured product
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 125000003118 aryl group Chemical group 0.000 claims abstract description 20
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- 125000003710 aryl alkyl group Chemical group 0.000 claims description 3
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Abstract
Description
本発明のエポキシ樹脂は、一般式(1)で表される。
で表されるビスフェニレン基を挙げることができる。好ましくは無置換もしくはメチル基で置換されたベンゼン環、ナフタレン環、またはビフェニル環である。
150℃での溶融粘度は好ましくは500mPa・s以下、加水分解性塩素は好ましくは500ppm以下である。
ジヒドロキシ樹脂は、水酸基当量が、好ましくは150~2000の範囲であり、より好ましくは180~1000の範囲、さらに好ましくは200~500の範囲である。
で表されるスルホン化合物を反応させることにより得られる。ここで芳香族ジヒドロキシ化合物とは、炭素数1~6のアルキル基置換又は未置換の2価のジヒドロキシベンゼン類、ジヒドロキシナフタレン類または、下記式(5)、
で表されるビスフェノール化合物である。具体的にはハイドロキノン、2,5-ジメチルハイドロキノン、2,3,5-トリメチルハイドロキノン、レゾルシノール、カテコール、1,5-ナフタレンジオール、1,6-ナフタレンジオール、1,7-ナフタレンジオール、2,6-ナフタレンジオール、2,7-ナフタレンジオール、ビスフェノールA、ビスフェノールF、3,3’,5,5’-テトラメチル-4,4’-ジヒドロキシジフェニルメタン、4,4’-ジヒドロキシビフェニル、3,3’,5,5’-テトラメチル-4,4’-ジヒドロキシビフェニル、4,4’-ジヒドロキシジフェニルエーテル、4,4’-ジヒドロキシベンゾフェノン、4,4’-ジヒドロキシジフェニルスルホン、4,4’-ジヒドロキシジフェニルスルフィド、フルオレンビスフェノール等が挙げられる。
ジヒドロキシ基の置換位置については、ジヒドロキシベンゼン類としては、1,4-ジヒドロキシ体又は1,3-ジヒドロキシ体が好ましく、ジヒドロキシナフタレン類としては、1,5-ジヒドロキシ体、1,6-ジヒドロキシ体又は2,7-ジヒドロキシ体が好ましく、ビスフェノール化合物としては、4,4’-ジヒドロキシ体が好ましい。使用する芳香族ジヒドロキシ化合物において、これらのジヒドロキシ置換体が50モル%以上であることが好ましい。
2Lの4口セパラブルフラスコに4,4’-ジヒドロキシビフェニル225.7gをN-メチルピロリドン(NMP)800gに溶解した後、炭酸カリウム70.8gを加え、窒素気流下、攪拌しながら120℃に昇温した。その後、4,4’-ジクロロジフェニルスルホン117.2gを加え、145℃で5時間反応させた。反応液を室温に冷却し、ろ過して塩を除いた後、150℃にて減圧蒸留しNMPを留去した。酢酸61.5gを加えて中和した後、大量の水に投入し、析出物をろ過にて回収した。水洗した後、乾燥して、粉末状のジヒドロキシ樹脂315gを得た(ジヒドロキシ樹脂A)。得られたジヒドロキシ樹脂Aの水酸基当量は247g/eq.であった。GPC測定の結果、未反応の4,4’-ジヒドロキシビフェニルが31.7%、式(3)でn=1のものが35.1%、n=2が19.4%、n=3が8.6%、n=4が3.6%であった。
ここで、GPC測定は、装置:HLC-8320(東ソー(株)製)及びカラム:TSKgelSuperHZ2500×2本及びTSKgelSuperHZ2000×2本(何れも東ソー(株)製)を用い、溶媒:テトラヒドロフラン、流速:0.35ml/分、温度:40℃、検出器:RIの条件で行った。
参考例で得たジヒドロキシ樹脂A100gをエピクロルヒドリン260g及びジグライム50gに溶解し、減圧下(約100mmHg)、65℃にて48.8%水酸化ナトリウム水溶液34.6gを4時間かけて滴下した。この間、生成する水はエピクロルヒドリンとの共沸により系外に除き、留出したエピクロルヒドリンは系内に戻した。滴下終了後、更に1時間反応を継続した。その後、エピクロルヒドリン及びジグライムを減圧留去し、トルエン500mLに溶解した後、濾過により生成した塩を除いた。水洗を行った後、トルエンを減圧留去し、白色粉末状のエポキシ樹脂97gを得た(エポキシ樹脂A)。GPCチャートを図1に示す。測定の結果、式(1)のn=0の成分が32.9%、n=1が40.1%、n=2が16.9%、n=3が4.6%、n=4が2.2%含まれていた。得られたエポキシ樹脂AのDSC測定から融点に対応した140℃にピークが観測された。赤外吸収スペクトルを図2に示す。エポキシ当量は251g/eq.、150℃での溶融粘度は80mPa・s、加水分解性塩素は170ppmであった。なお、ここで加水分解性塩素は、樹脂試料0.5gを1,4-ジオキサン30mlに溶解させたものを1N-KOH/メタノール溶液5mlで30分間煮沸還流したものを、硝酸銀溶液で電位差滴定を行うことにより求めた。溶融粘度は、BROOKFIELD社製CAP2000Hを用いて測定した。赤外吸収スペクトルは日立製作所製270-50型赤外吸収分析計を用いて、KBr錠剤法により測定した。
実施例1のエポキシ樹脂A、ビフェニル系エポキシ樹脂(エポキシ樹脂B:三菱化学製、YX-4000H、エポキシ当量193、融点105℃)、o-クレゾールノボラック型エポキシ樹脂(エポキシ樹脂C:日本化薬製、EOCN-1020、エポキシ当量197、軟化点54℃)、フェノールノボラック(硬化剤A;OH当量104、軟化点83℃、150℃での溶融粘度0.3Pa・s;BRG-557、アイカ工業製)、4,4’-ジヒドロキシジフェニルエーテル(硬化剤B)を用い、硬化促進剤としてトリフェニルホスフィンを用い、表1に示す配合で樹脂組成物とした。
これを用いて成形(150℃、5分)した後、ポストキュア(175℃、4時間)を行って試験片を得て、種々の物性試験に供した。結果を表1に示す。
(1)ガラス転移点及び熱膨張係数
(株)日立ハイテクサイエンス製TMA7100型熱機械測定装置を用いて、昇温速度10℃/分の条件で求めた。
(2)熱分解温度及び残炭率
(株)日立ハイテクサイエンス製TG/DTA7300型熱重量測定装置により、窒素気流下、昇温速度10℃/分の条件にて5wt%重量減少時の熱分解温度及び700℃での残炭率を求めた。
(3)熱伝導率
熱伝導率は、NETZSCH製LFA447型熱伝導率計を用いて非定常熱線法により測定した。
(4)吸水率
直径50mm、厚さ3mmの円盤を成形し、ポストキュア後、85℃、相対湿度85%の条件で100時間吸湿させた後の重量変化率とした。
Claims (5)
- エポキシ樹脂及び硬化剤よりなるエポキシ樹脂組成物において、請求項1に記載のエポキシ樹脂を必須成分として配合してなるエポキシ樹脂組成物。
- 請求項4に記載のエポキシ樹脂組成物を硬化してなる硬化物。
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JPH09151300A (ja) * | 1995-11-29 | 1997-06-10 | Sekisui Chem Co Ltd | 熱硬化性エポキシ樹脂組成物 |
JP2003531945A (ja) * | 2000-04-28 | 2003-10-28 | ビーエーエスエフ アクチェンゲゼルシャフト | 改善された靭性および流動性を有するポリアリールエーテルスルホンとポリアミドのブレンド |
JP2006321879A (ja) * | 2005-05-18 | 2006-11-30 | Nippon Steel Chem Co Ltd | 芳香族エーテルスルホン骨格を有する重合体、その製造方法及び組成物 |
JP2008150747A (ja) * | 2006-12-19 | 2008-07-03 | Toray Ind Inc | 炭素繊維束 |
JP2016138205A (ja) * | 2015-01-28 | 2016-08-04 | 三菱レイヨン株式会社 | プリプレグ及び繊維強化複合材料 |
-
2022
- 2022-03-02 JP JP2023503922A patent/JPWO2022186292A1/ja active Pending
- 2022-03-02 WO PCT/JP2022/008944 patent/WO2022186292A1/ja active Application Filing
- 2022-03-02 CN CN202280014645.3A patent/CN116848169A/zh active Pending
- 2022-03-03 TW TW111107746A patent/TW202244099A/zh unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09151300A (ja) * | 1995-11-29 | 1997-06-10 | Sekisui Chem Co Ltd | 熱硬化性エポキシ樹脂組成物 |
JP2003531945A (ja) * | 2000-04-28 | 2003-10-28 | ビーエーエスエフ アクチェンゲゼルシャフト | 改善された靭性および流動性を有するポリアリールエーテルスルホンとポリアミドのブレンド |
JP2006321879A (ja) * | 2005-05-18 | 2006-11-30 | Nippon Steel Chem Co Ltd | 芳香族エーテルスルホン骨格を有する重合体、その製造方法及び組成物 |
JP2008150747A (ja) * | 2006-12-19 | 2008-07-03 | Toray Ind Inc | 炭素繊維束 |
JP2016138205A (ja) * | 2015-01-28 | 2016-08-04 | 三菱レイヨン株式会社 | プリプレグ及び繊維強化複合材料 |
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CN116848169A (zh) | 2023-10-03 |
JPWO2022186292A1 (ja) | 2022-09-09 |
TW202244099A (zh) | 2022-11-16 |
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