[EN] STABLE HYDROFORMYLATION CATALYST FOR PREPARATION OF HIGH N/ISO RATIO ALDEHYDE PRODUCT<br/>[FR] CATALYSEUR D'HYDROFORMYLATION STABLE POUR LA PRÉPARATION D'UN PRODUIT ALDÉHYDE À RAPPORT N/ISO ÉLEVÉ
申请人:EASTMAN CHEM CO
公开号:WO2018044827A1
公开(公告)日:2018-03-08
A new stable, catalytically active, tetradentate organophosphorus modified rhodium hydroformylation catalyst has been discovered that is capable of producing aldehyde products with a high linear / branched product ratio from linear olefins. The tetradentate organophosphorus modifier is a tetrasubstituted 2,2',2",5'-tetramethyl-1,1':4'-1 "-terphenyl, whereby, each methyl group has one hydrogen substituted by an R, R'-diorganophosphine moiety. The R, R' may comprise aromatic, alkyl, arylalkyl and alkylaryl groups. The precursor 2,2',2",5'-tetramethyl-1,1':4',1 "-terphenyl hydrocarbon may be prepared from para-xylene and toluene derivatives.