Neste Oy

Neste Oxo Aktiebolag

Kjell Ankner

Leila Lahtinen

Kari Kulmala

Lea Rintala

Eija Valtonen

Kalevi Heinola

Kjell Sjoberg

Pia Carlsson

Hakan Rahkola

Monica Soderlund

Pirkko Vohlonen

Oili Riutta

Ulf Nummelin

Alfred Hopfinger

Soile Himanen

Process for the preparation of 2-ethyl-1,3-hexane diol

Process for the preparation of 2-n-butyl-2-ethyl-1,3-propane diol

The present invention relates to a process for the preparation of diols of the general formula (I) ##STR1## and monoesters thereof of the general formula (II) ##STR2## and the general formula (III) ##STR3## wherein R.sub.1 and R.sub.2 are the same of different groups and each denotes a lower alkyl group having 1 to 4 carbon atoms, preferably a methyl group. The process of this invention comprises condensing in a multi-phase reaction environment an aldehyde containing a hydrogen atom in the alpha position and having the general formula (IV) ##STR4## wherein R.sub.1 and R.sub.2 having the meaning given above, in the presence of a catalytic system consisting of a phase transferring catalyst and an alkaline substance.

Process for preparation of branched 1,3-glycols and their monoesters

Derivatives of N,N-bis(2,2-dimethyl-2-carboxy-ethyl)amine, manufacturing

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Molnlycke, Sweden

Kjell Ankner