Process for the manufacture of levulinic acid and esters

Details Process for the manufacture of levulinic acid and esters Process for the manufacture of levulinic acid and esters

1979-05-07

1980-11-25

Garner, Vivian

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

Organic compounds

Carboxylic acid esters

203 57, 203 60, 2603474, 562577, C07C 6700, C07C 69716, C07C 5109, C07C 59185

Patent

active

042360218

ABSTRACT:
An improved process for the manufacture of levulinic acid which comprises esterification of furfuryl alcohol in the presence of a different alcohol selected from unsubstituted primary and secondary carbon-chain or carbon-ring alcohols containing 1 to 10 carbon atoms in the presence of a small amount of acid as a catalyst, purification of the resulting levulinate ester by vacuum distillation of a mixture of the levulinate ester and a high boiling solvent and hydrolysis of the purified levulinate ester in the presence of water and a small amount of strong acid catalyst to yield levulinic acid-water mixture. The improvement resides in the purification being carried out prior to hydrolysis and in using a high boiling solvent in the purification step to prevent the formation of a solid resin.

REFERENCES:
patent: 2763665 (1956-09-01), Lock et al.
patent: 3203964 (1965-08-01), Huffman et al.

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