Organic compounds -- part of the class 532-570 series – Organic compounds – Unsubstituted hydrocarbyl chain between the ring and the -c-...
Patent
1992-08-17
1993-08-03
Bond, Robert T.
Organic compounds -- part of the class 532-570 series
Organic compounds
Unsubstituted hydrocarbyl chain between the ring and the -c-...
540485, C07D20112, C07D20116
Patent
active
052330370
ABSTRACT:
The invention relates to a process for the production of caprolactam by thermal depolymerization of polyamide in the presence of small quantities of potassium carbonate at 250.degree. to 320.degree. C. and to a process for purifying the resulting caprolactam.
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Dmitrieva et al. "Translated from Khimicheskie Volokna", vol. 17, No. 7 pp. 5-12 (1985).
Derwent Data Base, JP 50 035 183, Apr. 3, 1975.
Chem. Ing. Technik, Bd. 45, Nr. 24, pp. 1509-1524, (1973).
Chemical Abstracts, 71:49329, (1969).
Chem. Abstr. 88:51715m (1978).
Chem. Abstr. 84:18020a (1976).
Buysch Hans-Josef
Freitag Dieter
Idel Karsten-Josef
Nielinger Werner
Ostlinning Edgar
Bayer Aktiengesellschaft
Bond Robert T.
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