Patent ID: 6420304
Filing Date: 2002-07-16
Classification: B01J,C07C

Abstract:
A polymer-supported carbonylation catalyst useful in a process for preparing organic carboxylic acid or anhydride having n âˆ’1 carbon atoms by carbonylating with carbon monoxide-on;alcohols having n carbon atoms, either having 2n carbon atoms or ester of said alcohol with an acid, wherein the polymer in said polymer-supported catalyst can be crosslinked to have a functional structure of: where:A: is an unsaturated C1-5 aliphatic radical containing nitrogen or an aromatic radical containing nitrogen; B: is A or an unsaturated C1-5 aliphatic or aromatic alcohol, ether, aldehyde, ketone or carboxylic ester group containing oxygen; M: is rhodium or iridium; L: is a carbonyl, triphenylphosphine or other ligand; Y: is a halogen, tetraphenylboron, tetrafluoroboron, acetic acid, carbonate, bicarbonate or thiocyanate anionic radical; x is 1 to 2; n is 1-5; m is 2-300.