Patent · US Active

Method for purifying cyclic ketones

US7714171B2 · kind B2 · utility

2Cited by

7References

11Claims

0Family size

Assignee

BASF SE

Inventors

Rolf Pinkos · Bad Dürkheim, DE
Gerd-Dieter Tebben · Mannheim, DE
Alexander Hauk · Ludwigshafen, DE
Christian Müller · Mannheim, DE
Harald Rust · Bochum, DE

Key dates

Filing date	Jun 27, 2007
Grant date	May 11, 2010
Priority date	—
Expiry date	Jun 27, 2027

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C45/82
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a process for purifying a composition (I) comprising at least one cyclic ketone having from 7 to 16 carbon atoms, which comprises thermal treatment of the composition (I) with at least one acid and further purification by means of a process selected from the group consisting of distillation, extraction and crystallization, Furthermore, the present invention relates to a process for preparing cyclododecanone, which comprises such a purification, and the use of at least one acid for purifying a composition (I) comprising at least one cyclic ketone having from 7 to 16 carbon atoms by thermal treatment of the composition (I) with the acid.

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