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:
Jan. 03, 1984
Filed:
Nov. 08, 1979
Kurt Schneider, Bad Durkheim, DE;
Rudolf Kummer, Frankenthal, DE;
Kurt Schwirten, Ludwigshafen, DE;
Hans-Dieter Schindler, deceased, late of Frankenthal, DE;
Maria E Schindler, heir-at-law, Neuried, DE;
Ute Lang, heir-at-law, Neuried, DE;
Rainer Schindler, heir-at-law, Hechendorf, DE;
BASF Aktiengesellschaft, , DE;
Abstract
Arylacetic acids and their esters, of the formula Ar(CH.sub.2 -COOR).sub.n (where Ar=aryl, R is H or a hydrocarbon radical, and n is 1 or 2) are manufactured by carbonylation of halomethylaryl compounds Ar(CH.sub.2 C).sub.n (where X is Cl, Br or I) with carbon monoxide and a catalyst m.sup.+ �Fe(O).sub.3 NO!.sup.- (where M is an alkali metal, ammonium or one equivalent of an alkaline earth metal) in the presence of stoichiometric amounts of an inorganic base or of an alcoholate of an alcohol ROH.