Neste Oy

Neste Chemical Oy

Leila Lahtinen

Salme Koskimies

Eija Valtonen

Kjell Ankner

Pekka Knuuttila

Jukka Hietala

Erkki Halme

Kari Kulmala

Anna-Liisa Tammi

Hannele Jarvinen

Lea Rintala

Jan H Nasman

Hannu Nousiainen

Lars Peter Lindfors

Kalevi Heinola

Erkki Paatero

Peter Idelman

Pirkko Vohlonen

Oili Riutta

Ulf Nummelin

Soile Himanen

Simo Tuominen

Osmo Hormi

Rami Haakana

Matts Ahlfors

Esa Nummi

The invention relates to a process for the preparation of polyvalent alcohols by hydrogenation of an aldehyde. According to the invention said aldehyde is obtained by aldolisation reaction of an aldehyde containing an &agr; hydrogen atom and having the formula R,CHO, or the mixture of said aldehyde with a second different aldehyde having the formula or R,CHO, wherein R,is selected from alkyl having 1-12 carbon atoms, cycloalkyl, aryl and aralkyl having 1-14 carbon atoms, and R,is selected from H, alkyl having 1-12 carbon atoms, cycloalkyl, aryl and aralkyl having 1-14 carbon atoms, said aldolisation being carried out in the presence of a weak base anion exchange resin, and the hydrogenation being carried out in the presence of a solvent and a hydrogenation catalyst.

Process for the preparation of polyvalent alcohols

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

Process for the preparation of 3-substituted thiophenes

The present invention relates to N acyl and O acyl derivatives of N,N-bis(2,2-dimethyl-3-hydroxypropyl)amine which are produced as follows: ammonium halide, sulphate or aldehyde, and isobutyl aldehyde are subjected to condensation reaction and the obtained product is reduced to the corresponding amino alcohol. The hydrogen atoms linked to the nitrogen atom and the oxygen atom are thereafter substituted by acyl groups. The N-acylation and esterification of hydroxyl groups can be performed simultaneously using a carboxyl acid, carboxyl acid halide, or carboxyl acid anhydride. The N,N-bis(2,2-dimethyl-3-hydroxypropyl)amine derivatives can be used as polymer stabilizers, PCV plasticizers, emulsifiers, corrosion resistance agents, and metal complexing agents.

N-acyl and O-acyl derivatives of

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

Catalyst system for selective alkylation of toluene

Procedure for producing stearyl-.beta.-(3,5-dibutyl-4-hydroxyphenyl)

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Leila Lahtinen