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J. Żurakowska-Orszagh, G. Dzierżkowska, J. Kamiński


Polyimides based on 1,4,5,8-naphthalenetetracarboxylic acid anhydride


Polimery 1982, No 2, 72



DOI: dx.doi.org/10.14314/polimery.1982.072

Summary

The method of synthesis of 1,4,5,8-naphthalenetetracarboxylic acid from pyrene has been modified and a method of purifying the product worked out. This purification method is based on the oxidation of coloured compounds; it is rapid, efficient and gives acid of high degree of purity.


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