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OwnerRobert Blessing, Leonardus Petrusinventors
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The present invention provides a process for dimerisation of levulinic acid, wherein an organic phase comprising levulinic acid is contacted, in the presence of hydrogen, with a strong acidic heterogeneous catalyst comprising a hydrogenating metal, at a temperature in the range of from 60 to 170° C. and a pressure in the range of from 1 to 200 bar (absolute). The invention further relates to dimers of levulinic acid and their esters, to a mixture comprising levulinic acid and its dimers obtainable by such process and to an ester mixture obtainable by esterifying such mixture of levulinic acid and its dimers.
A process for dimerisation of levulinic acid, wherein an organic phase comprising levulinic acid is contacted, in the presence of hydrogen, with a strong acidic heterogeneous catalyst comprising a hydrogenating metal, at a temperature in the range of from 60 to 170° C. and a pressure in the range of from 1 to 200 bar (absolute).
A di-carboxylic acid having the molecular structure according to formula
A di-carboxylic acid having the molecular structure according to formula
A C10 compound with a carboxylic group and a lactone group having the molecular structure according to formula
A C10 compound with two lactone groups having the molecular structure according to formula
A C10 compound with a carboxylic group and a lactone group having the molecular structure according to formula
A di-ester having the general molecular structure according to formula
An ester obtainable by reacting a C10 compound comprising a carboxyl group and a lactone group, or by reacting a mixed dimer, with an alcohol under esterifying conditions.
Dependencies are inferred from the claim text.