The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 26, 2006
Filed:
Dec. 06, 2002
Tilman Sirch, Schifferstadt, DE;
Gerd Kaibel, Lampertheim, DE;
Alexander Wartini, Heidelberg, DE;
Matthias Dernbach, Dossenheim, DE;
Tilman Sirch, Schifferstadt, DE;
Gerd Kaibel, Lampertheim, DE;
Alexander Wartini, Heidelberg, DE;
Matthias Dernbach, Dossenheim, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
Trimethylolpropane is isolated from a reaction mixture which has been obtained by reaction of n-butyraldehyde with formaldehyde in the presence of a base and, if appropriate, hydrogenation of the resulting mixture by distilling the mixture by means of a dividing wall column or a distillation column with a precolumn or a distillation column with an after-column. The process has low capital costs and a low energy consumption and gives reduced formation of high-boiling by-products.