C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/368.5
C07D 305/12 (2006.01) C07C 45/88 (2006.01) C07C 45/89 (2006.01) C07C 45/90 (2006.01) C07D 315/00 (2006.01)
Patent
CA 2007048
An improved process is disclosed for producing diketene by the dimerization of ketene obtained from acetic acid by pyrolysis. The polymer portion in the diketene is reduced by the addition of sulfur dioxide to the ketene gas or to the dimerization reaction medium.
Bergamin Renzo
Quittmann Wilhelm
Stoffel Josef
G. Ronald Bell & Associates
Lonza Ltd.
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