Conclusions
Caprolactam which has starting quality indices that conform to the requirements of All-Union StateStandard (GOST) 7850-74 retains its quality for 15 days during the process of storage at 353 K under a nitrogen blanket containing no more than 1×10−3% oxygen by wt.
The duration of quality retention by caprolactam at 353 or 373 K is considerably reduced under a nitrogen blanket containing 6.7×10−3% oxygen.
The quality indices of caprolactam which have been made to conform to All-Union State Standard (GOST) 7850-74 canbe preserved only on the condition of storageat the minimum temperature which ensures keeping the caprolactam melted (Tcr=341.8 K) and in a medium of nitrogen containing no more than 1 × 10−1% oxygen.
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Literature cited
A. V. Iogansen, G. A. Kurkchi, and O. V. Levina, Spectral and Chromatographic Analysis in Processes of Manufacturing Caprolactam and Other Monomers for Polyamides [in Russian], Series “The Nitrogen Industry,” NIITEKhIM GIAP, Moscow (1976).
A. V. Iogansen, I. A. Kovalenko, and O. V. Levina, Khimicheskaya Fizika, No. 4, 524–527 (1982).
All-Union State Standard (GOST) 7850-74. Caprolactam.
G. J. Dege and H. K. Reimschuessel, J. Polymer Sci., 11, No. 4, 873–896 (1973).
Additional information
Translated from Khimicheskie Volokna, No. 1, pp. 32–33, January–February, 1987.
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Chichagov, V.N., Kolodko, T.M. & Fedoseenko, V.I. Stability of caprolactam on storage under manufacturing conditions. Fibre Chem 19, 43–44 (1987). https://doi.org/10.1007/BF00544616
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DOI: https://doi.org/10.1007/BF00544616