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:
Jul. 18, 2006
Filed:
Oct. 24, 2003
Stefan Brand, Schriesheim, DE;
Daniel Decker, Liederbach a. Ts., DE;
Thomas Wessel, Niederdorfelden, DE;
Stefan Brand, Schriesheim, DE;
Daniel Decker, Liederbach a. Ts., DE;
Thomas Wessel, Niederdorfelden, DE;
Clariant GmbH, Frankfurt, DE;
Abstract
A process for preparing 1,3-di-halo-substituted benzene derivatives (II) from 2,6-di-halo-substituted benzaldehydes (I) (where X, Xare each independently F, Cl, Br, and R, R, Rare each independently H, halogen, OH, C–C-alkyl, CF, CHO, C–C-aryl, Oalkyl, Oaryl, NO) by reacting with an alkaline medium, which comprises initially charging the alkaline medium and metering in the 2,6-di-halo-substituted benzaldehyde (I) or initially charging the 2,6-di-halo-substituted benzaldehyde (I) and metering in the alkaline medium