Dsm IP Assets B.v.

Georgia-pacific Corporation

Rinke Marcel Altink

Anna Maria Cornelia Francisca Castelijns

Pierre Louis Woestenborghs

The invention relates to a process for the isolation of levulinic acid from an organic solution, comprising washing said organic solution with an alkaline aqueous stream to yield a washed organic solution; subjecting the washed organic solution to a distillation to yield a distillate and a distillation residue; and recovering levulinic acid from the distillate or the residue. This process may result in high yields of levulinic acid.

Process for the isolation of levulinic acid

The present invention relates to a process for the preparation of diaminobutane from ornithine, comprising steps of: i. preparing a solution of (a) a salt of ornithine and an acid; and (b) an aldehyde or a ketone, or a mixture thereof; in (c) a solvent, wherein the solvent comprises a protic organic solvent or a dipolar aprotic organic solvent, or a mixture thereof and ii. heating the solution to a temperature above 100&#xb0; C., thereby inducing decarboxylation of the ornithine and formation of diaminobutane.

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Echt, Netherlands

Rinke Marcel Altink