Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Phosphorus or compound containing same
Reexamination Certificate
2007-04-10
2007-04-10
Zucker, Paul A. (Department: 1621)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Phosphorus or compound containing same
C560S070000
Reexamination Certificate
active
10505019
ABSTRACT:
A process for the carbonylation of an ethylenically unsaturated compound with carbon monoxide and a co-reactant. The carbonylation reaction is carried out in the presence of a novel catalyst involving:a) a source of a group VIII metal;b)a bidentate diphosphine of formula I,wherein R1represents a bivalent radical that together with the phosphorus atom to which it is attached is an optionally substituted 2-phospha-tricyclo[3.3.1.1{3,7}]- decyl group or a derivative thereof in which one or more of the carbon atoms are replaced by heteroatoms (“2-PA” group); wherein R2and R3independently represent univalent radicals of up to 20 atoms or jointly form a bivalent radical of up to 20 atoms; and wherein A1and A2independently represent optionally substituted alkylene groups and R represents an optionally substituted aromatic group; and,c) a source of anions.
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Drent Eit
Pringle Paul Gerard
Pugh Robert Ian
Van Der Made Renata Helena
Haas Donald F.
Shell Oil Company
Zucker Paul A.
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