Process for the manufacture of alkyl ketene dimers by dimerizati

Details Process for the manufacture of alkyl ketene dimers by dimerizati Process for the manufacture of alkyl ketene dimers by dimerizati

1994-03-24

1996-06-11

Reamer, James H.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D30512

Patent

active

055257380

ABSTRACT:
A process is disclosed for the synthesis of alkyl ketene dimers by the dehydrohalogenation of a C.sub.8 -C.sub.22 saturated or unsaturated linear fatty acid halide, comprising reacting the fatty acid chloride with a cyclic tertiary amine in a solvent that is selected from the group consisting of cycloalkanes and alkanes at a temperature of up to 75.degree., mechanically separating tertiary amine hydrochloride salts from alkyl ketene dimer dissolved in the solvent, and recovering the alkyl ketene dimer from the solvent.

REFERENCES:
patent: 2238826 (1941-04-01), Sauer
patent: 2369914 (1945-02-01), Sauer
patent: 2369919 (1945-02-01), Sauer
Sauer, J. C., Am. Chem. Soc. 69, pp. 2444-2448 (1947).
Sauer, J. A. C. S., vol. 69, pp. 2444-2448 (1947).

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