Patent · US Expired

Method for the hydrodehalogenation of halogenated meta-cresols

US7399890B2 · kind B2 · utility

0Cited by

2References

10Claims

0Family size

Assignee

LANXESS Deutschland GmbH · DE

Inventors

Michael Pies · Duisburg, DE
Klaus Schönauer · Ratingen, DE
Volker Hassmann · Krefeld, DE
Hermann Uhr · Krefeld, DE

Key dates

Filing date	Dec 7, 2004
Grant date	Jul 15, 2008
Priority date	—
Expiry date	Dec 7, 2024

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C37/00
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present process serves for the hydrodehalogenation of halogenated meta-cresols of the formula (I)in which the R1 to R4 radicals are each as defined in the description, and is characterized in that halogenated meta-cresols of the formula (I) are contacted with a catalyst which has been prepared by applying one or more salts of palladium and/or platinum and optionally copper salts to an aluminum oxide or titanium oxide support material, together with hydrogen, at temperatures between 100 and 250° C.

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