Patent · US Expired

Method for the decomposition of high boiling by-products produced in the synthesis of polyhydric alcohols

US6586641B2 · kind B2 · utility

4Cited by

11References

17Claims

0Family size

Assignee

BASF SE

Inventors

Matthias Dernbach · Eppelheim, DE
Detlef Kratz · Heidelberg, DE
Achim Stammer · Freinsheim, DE
Gerhard Schulz · Ludwigshafen, DE

Key dates

Filing date	Jun 26, 2002
Grant date	Jul 1, 2003
Priority date	—
Expiry date	Jun 26, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C29/80
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process is provided for increasing the yield in the preparation of polyhydric alcohols obtained from methylolated alkanals by hydrogenation, wherein derivatives of these alcohols are decomposed by adding 5 ppm to 1% by weight, preferably 100 to 1000 ppm, of a suitable acid to an anhydrous mixture containing these derivatives, heating the mixture to temperatures of 100 to 300° C. and then separating off the polyhydric alcohol by distillation. This process makes it possible simply and efficiently to decompose compounds which boil above the polyhydric alcohol and are unwanted by-products of its synthesis.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.