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:
Mar. 27, 2007
Filed:
Jun. 03, 2003
Jean-pierre Wolf, Maisprach, CH;
Gebhard Hug, Rheinfelden, CH;
Jean-Pierre Wolf, Maisprach, CH;
Gebhard Hug, Rheinfelden, CH;
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Abstract
The invention relates to dimer and multimer form of BAPO compounds of the formula (I) dimer and multimer forms of MAPO compounds of the formula (II) wherein R, R, and Rindependently of one another are unsubstituted or substituted C–Calkyl, benzyl, C–Calkoxy, C–Ccycloalkyl or C–Caryl; Q is a di- tri or tetravalent arylene residue; n is 1–4, m is 0–2, n+m is 2, 3 or 4, with the proviso, that Rand Rare different from each other. The invention further relates to a process for the preparation of dimer or multimer forms of BAPO compounds of the formula (I) and of dimer or multimer forms of MAPO compounds of the formula (II), characterized in the (n+m) equivalents of a dimetalated-phosphine RP(M)is reacted with one equivalent of a di- or polycarboxylic acid halogenide to form an intermediate of the formula III the intermediate is then reacted either with (n+m) equivalents of a further carboxylic acid halogenide (R—CO-Hal) or with a halogenide R-Hal, the reaction products are then oxidized to form phosphine oxides of the formula I or II