The Chemical Structure of the Intermediates in the Curing Process for Epoxide Resins Cured with 1, 6-Hexanediamine in the Presence of Salicylic Acid

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  • SHIMBO Masaki
    Department of Applied Chemistry, Faculty of Engineering Kansai. University
  • HARAI Shin-ichi
    Department of Applied Chemistry, Faculty of Engineering Kansai. University

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Other Title
  • サリチル酸存在下に1,6-ヘキサンジアミンで硬化したエポキシ樹脂中間体の構造
  • サリチル酸存在下に１，６‐ヘキサンジアミンで硬化したエポキシ樹脂中間体の構造

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Description

Bisphenol A diglycidyl ether was cured at 30°C with 1, 6-hexanediamine in the presence or abesence of salicylic acid as an accelerator. The curing process in these systems was monitored by measurements of the molecular weight and the functional groups in the products. The structures of the intermediates isolated from the cured resin using salicylic acid as an accelerator were also determined. The product of this accelerated system showed a high conversion of the secondary amino group. The intermediates having molecular weights in the range 340-1600 were isolated and their structure were estimated by means of GPC, VPO, NMR and titrational analyses. The molecular chain of the reaction products was suggested to be made of the alternating diepoxide and diamine units.

Journal

  • NIPPON KAGAKU KAISHI

    NIPPON KAGAKU KAISHI 1983 (4), 571-577, 1983-04-10

    The Chemical Society of Japan

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