C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 29/80 (2006.01) C07C 29/76 (2006.01) C07C 31/22 (2006.01)
Patent
CA 2466295
The invention relates to a method for removing acetals containing formaldehyde from polyvalent alcohols, especially trimethylolpropane. The inventive method is characterised in that the polyvalent alcohol is liberated of low-boiling constituents after it has been produced by distillation, is then subjected to tempering and is repurified, preferably by means of distillation.
La présente invention concerne un procédé permettant de supprimer les acétals contenant de l'aldéhyde formique d'alcools polyvalents, notamment du triméthylolpropane. Ce procédé est caractérisé en ce qu'une fois produit par distillation, l'alcool polyvalent est libéré de produits à bas point d'ébullition. Ensuite il est recuit puis à nouveau purifié, de préférence, par distillation.
Dernbach Matthias
Melder Johann-Peter
Sirch Tilman
Wartini Alexander
Basf Aktiengesellschaft
Robic
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