<b>Fast Curing of Cyanate Ester Resin with Aromatic Diamines and Development of Various Novolak Type Cyanate Ester Resins </b>

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  • Katagiri Masayuki
    Natural Gas Chemicals Company Niigata Research Laboratory, Mitsubishi Gas Chemical Co., Inc.
  • Iwamoto Shinpei
    Natural Gas Chemicals Company Niigata Research Laboratory, Mitsubishi Gas Chemical Co., Inc.
  • Yasuda Yoshihiro
    Natural Gas Chemicals Company Niigata Research Laboratory, Mitsubishi Gas Chemical Co., Inc.
  • Hasegawa Hiroki
    Natural Gas Chemicals Company Niigata Research Laboratory, Mitsubishi Gas Chemical Co., Inc.
  • Tsujimoto Tomoo
    Natural Gas Chemicals Company Niigata Research Laboratory, Mitsubishi Gas Chemical Co., Inc.

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Other Title
  • <b>芳香族ジアミン類によるシアネート樹脂の速硬化と </b><b>各種ノボラック型シアネート樹脂の開発 </b>
  • 芳香族ジアミン類によるシアネート樹脂の速硬化と各種ノボラック型シアネート樹脂の開発
  • ホウコウゾク ジアミンルイ ニ ヨル シアネート ジュシ ノ ソクコウカ ト カクシュ ノボラックガタ シアネート ジュシ ノ カイハツ

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<p>In the thin film system of 1,1-bis(4-cyanatophenyl)ethane including silica filler, it could be cured fast with aromatic diamines such as bis(3-aminophenyl)sulfone, 1,3-bis(3-aminophenoxy)benzene (APBN) and 1,3-bis[2-(4-aminophenyl)-2- propyl] benzene, and the cured products had glass transition temperature above 220℃ and tensile shear adhesion strength about 10MPa. In our experiment, the aromatic diamines of the lower pKb showed the stronger cure catalysis. In comparison with novolak type cyanate ester resin derived from fomaldehyde and phenol (NVCN), that derived from acetaldehyde and phenol (E-CN-M)showed lower viscosity that leads to better handling in the lower molecular weight region (Mw<1000). Synopsis In the thin film system of 1,1-bis(4-cyanatophenyl)ethane including silica filler, it could be cured fast with aromatic diamines such as bis(3-aminophenyl)sulfone, 1,3-bis(3-aminophenoxy)benzene (APBN) and 1,3-bis[2-(4-aminophenyl)-2- Furthermore, the cured product of E-CN-M in this region (Mw<1000) showed higher initial and long term heat resistance than NVCN. It was also shown that introduction of furan moiety to the bridging methylene in the novolak type cyanate ester resin enhanced long-term heat resistance.</p>

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