METHOD FOR PRODUCING KETENE DERIVATIVE

An object is to provide a method for producing a ketene derivative that decreases the consumption quantity of phosphorus compounds, and the discharge quantity of the phosphorus compounds into the environment. A method for producing a ketene derivative includes a step (i) of conducting thermal decomp...

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Bibliographic Details
Main Authors TSUGITA, Nobuhiro, OKUYAMA, Naoto, SASAKI, Yukihiro
Format Patent
LanguageEnglish
French
German
Published 09.01.2019
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:An object is to provide a method for producing a ketene derivative that decreases the consumption quantity of phosphorus compounds, and the discharge quantity of the phosphorus compounds into the environment. A method for producing a ketene derivative includes a step (i) of conducting thermal decomposition reaction of acetic acid in a presence of a phosphorus-containing catalyst in a reactor to produce a thermal decomposition gas containing ketene, a step (ii) of cooling the thermal decomposition gas to be separated into a gaseous component containing ketene, and a condensed liquid containing a phosphorus compound (a), and a step (iii) of causing the ketene to react with a different organic compound to produce a ketene derivative. The step (i) includes conducting the thermal decomposition reaction while supplying, into the reactor, the condensed liquid containing the phosphorus compound (a) or a concentrated liquid of the condensed liquid.
Bibliography:Application Number: EP20160886210