Patent ID: 6800719
Filing Date: 2004-10-05
Classification: C07F,C08G

Abstract:
A process for preparing a polyketone comprising contacting a mixture of carbon monoxide with one or more alkenes under polymerization conditions with a catalyst comprising a transition metal complexed with one or more ligands comprising phosphorus containing rings of the formulae V or II whereinthe phosphorus containing rings are optionally-substituted and are optionally members of a larger bicyclic or tricyclic ring system; each P atom is bonded to only three, other atoms in the ligand; two atoms in the ring adjacent to the P atom are C atoms; R1, R2, R3, and R4 are independantly selected from the group consisting of hydrogen, hydrocarbyl, and substituted hydrocarbyl; R5 and R6 are independently selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl, Cl, Br, I, hydroxyl, alkoxy, thiol, alkylthio, amino, alkylamino, and dialkylamino; R2 and R3 together and R5 and R6 together can optionally form a ring; A is a divalent group consisting of optionally-substituted chains of from 1 to 12 linear, branched, or cyclic carbons, optionally containing one or more heteroatoms or organometallic groups in the chain, and â€”N(R7)â€”N(R8)â€”; and R7 and R8 are independently selected from the group consisting of hydrogen, hydrocarbyl, and substituted hydrocarbyl.