US 5,314,856 AGranted

Preparation of alternating olefin/carbon monoxide copolymers by means of a heterogeneous supported catalyst

AssigneeEnichem S.p.A.

InventorsAnna Sommazzi, Gabriele Lugli, Fabio Garbassi, Fausto Calderazzo, Daniela B. Dell'Amico

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Abstract

A catalyst active in the preparation of alternating olefin/carbon monoxide (CO) copolymers is constituted by: (a) Pd(O.sub.2 CNEt.sub.2).sub.2 (NHET.sub.2).sub.2 supported on a solid carrier preferably constituted by hydroxylated silica, (b) an either mono- or bidentate ligand containing one or two nitrogen or phosphorous atoms capable of linking to Pd atom by dative bonds, (c) a mineral or organic acid. Disclosed are the preparation of the catalyst and the use of said catalyst in alternated copolymerization of ethylene (C2) and/or other olefins with carbon monoxide (CO).

Claims14

Dependent claims

Heterogeneous catalytic system active in the preparation of alternating copolymers of olefins with carbon monoxide (CO), constituted by:

(a) the solid compound produced from the interaction of
Pd(O.sub.2 CNEt.sub.2).sub.2 (NHet.sub.2).sub.2
with a solid carrier,
(b) a mono- or bidentate ligand containing one or two nitrogen or phosphorous atoms, capable of binding to Pd atoms through dative bonds, wherein said monodentate ligand is an aliphatic, cycloaliphatic, or aromatic monophosphine, or an aliphatic or aromatic amine, and wherein said bidentate ligand forms a complex with Pd through both of its heteroatoms,
(c) a mineral or organic acid having a pKa less than 5.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/026,022Filed 4 Mar 1993
Priority: IT MI92 A 0004845 Mar 1992
Granted: 24 May 1994
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

C08G 67/02
Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing oxygen or oxygen and carbon,…:…
B01J 31/1625
Coordination complexes, e.g. organometallic complexes, immobilised on an inorganic support, e.g. ship-in-a-bottle type catalysts: immobilised by…
B01J 31/1805
Containing nitrogen, phosphorus, arsenic or antimony as complexing atoms, e.g. in pyridine ligands, or in resonance therewith, e.g. in…
B01J 31/181
The ligands containing nitrogen: cyclic ligands, including e.g. non-condensed polycyclic ligands, comprising at least one complexing nitrogen atom…