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New process for manufacturing maleimides

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Abstract

It has been well-known that the heat distortion temperature of resin is effectively enhanced by the incorporation of a maleimide unit. However, an economical industrial production method for maleimide was not yet established. We have established a new industrial production method of maleimides based on a reaction model which was revealed by analyzing the reactions occurring in the dehydration of maleamic acid. Especially, we have developed a new re-usable catalyst which has high performance without corrosion problems and a new process having superior productivity of maleimide with a high yield. This method contains the following two features: (1) a new catalyst, supported orthophosphoric acid and its amine salt mixture; (2) employment of a reaction to change the by-product to maleimide.

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Authors and Affiliations

  1. Materials & Functions Research Laboratory, Nippon Shokubai Co., Ltd., 5-8, Nishi Otabi-cho, Suita, Osaka, 564, Japan

    Yuichi Kita & Kazuo Kishino

Authors
  1. Yuichi Kita
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  2. Kazuo Kishino
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Kita, Y., Kishino, K. New process for manufacturing maleimides. Catalysis Surveys from Asia 2, 187–198 (1998). https://doi.org/10.1023/A:1019030509156

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  • DOI: https://doi.org/10.1023/A:1019030509156

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