Solvay (societe Anonyme)

Solvay Interox (societe Anon.)

V&eacute;ronique Mathieu

Francine Janssens

Jean-Paul Schoebrechts

Charles-Marie Anciaux

Alain Lambert

Pascal Pennetreau

Noel Vanlautem

Process for preparing halogenated hydrocarbons, comprising at least 3 carbon atoms, by catalytic telomerization between a haloalkane and an olefin in the presence of an amine with a high boiling point as co-catalyst. 1,1,1,3,3-Pentachloropropane and 1,1,1,3,3-pentachlorobutane are thus prepared under mild conditions in good yield and the catalyst/co-catalyst system can be easily separated by distillation and recycled.

Process for preparing halogenated hydrocarbons

Halohydrocarbons comprising at least 3 carbon atoms are obtained by batchwise reaction between a haloalkane and an olefin in the presence of a catalyst and a co-catalyst. The addition of at least some of the co-catalyst is carried out gradually. At least some of the co-catalyst is recovered with a view to its re-use.

Process for preparing halohydrocarbons in the presence of a co-catalyst

Halohydrocarbons comprising at least 3 carbon atoms are obtained by reaction between a haloalkane and a haloolefin, in the substantial absence of nitrile, and by introducing the reactants in a molar ratio between the haloalkane and the haloolefin of less than 2. 1,1,1,3,3-Pentachloropropane can thus be obtained in good voluminal yield.

Method for preparing of halogenated hydrocarbons

Halohydrocarbons comprising at least 3 carbon atoms are obtained by reaction between a haloalkane and an olefin in the presence of an organocopper compound as catalyst, a solvent and/or a cocatalyst. 1,1,1,3,3-Penta-chloropropane can thus be obtained in good yield under mild conditions.

Method for preparing halogenated hydrocarbons

1,1,1,3,3-pentachlorobutane is obtained by reacting carbon tetrachloride with 2-chloro-1-propene in the presence of at least one copper (I) or (II) compound as telomerization catalyst. Advantageously, a polar compound can be present in the reaction mixture as solvent, and an amine, an amide or a trialkylphosphine oxide can be present as cocatalyst.

Method for the preparation of 1,1,1,3,3-pentachlorobutane

Halohydrocarbons containing at least 3 carbon atoms are obtained by reaction between a haloalkane and an olefin in the presence of a catalyst in a reaction medium which is essentially free of water.

Process for preparing halohydrocarbons

Hydrogenation catalysts based on palladium, platinum or rhodium comprising at least one other metal M which are deposited on zirconium oxide and silicon oxide supports. Process for the manufacture of these catalysts by successive impregnation of the support using palladium, platinum or rhodium and using another metal M. Use of these catalysts in hydrogenation reactions and in particular in preparing hydrogen peroxide.

Growing community of inventors

Wavre, Belgium

Véronique Mathieu

Growing community of inventors

Wavre, Belgium

V&eacute;ronique Mathieu

Véronique Mathieu