Process for the reduction of the polymer portion in the dimeriza

Details Process for the reduction of the polymer portion in the dimeriza Process for the reduction of the polymer portion in the dimeriza

1990-01-03

1991-03-12

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549328, C07D30512

Patent

active

049994387

ABSTRACT:
The polymer portion in the production of diketene by the dimerization of ketene obtained from acetic acid by pyrolysis is reduced by the addition of sulfur dioxide to the ketene gas or to the reaction medium.

REFERENCES:
patent: 4364913 (1982-12-01), Katz et al.
patent: 4377490 (1983-03-01), Shiraishi et al.
patent: 4389386 (1983-06-01), Feit et al.
Chemical Abstracts: 63:1708b, "Preparation of diketene," abstract of Neth. Appl. 6,408,804, (1965).
D. Bormann in Houben-Weyl, Methoden der Organischen Chemie (Methods of Organic Chemistry), vol. 7/4, pp. 226-228 (1968).
G. F. Pregaglia et al., Encyclopedia of Polymer Science and Technology, vol. 8, pp. 45-57, (1968 edn.).

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