Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymer of an ethylenically unsaturated reactant with a...
Patent
1997-12-03
2000-01-25
Truong, Duc
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymer of an ethylenically unsaturated reactant with a...
528397, 528399, 556 7, 556 13, 556136, 502155, 502162, 502167, C08G 6702
Patent
active
060180161
ABSTRACT:
A catalyst composition prepared by reacting together (a) a source of a Group VIII metal; (b) a bidentate phosphine ligand having at least two phosphorus atoms joined by a bridging group of the formula --(N).sub.x --(P).sub.y --N-- where x is 0 or 1; and (c) a promoter is disclosed. The Group VIII metal is preferably palladium. The promoter can be a weakly or non-coordinating anion. Alternatively it can be a boron hydrocarbyl compound or an aluminoxane. Also disclosed are novel bidentate phosphine ligands and intermediates therefor as well as novel palladium complexes. The catalysts are used in the preparation of polyketones.
REFERENCES:
patent: 5770684 (1998-06-01), Stewart et al.
"A New Approach to the Synthesis of Aryldifluorophosphines, Formation of CIS-Dichloro-BIS (Aryldifluorophosphine) Platinum (II) Complexes" (Journal of Fluorine Chemistry; L. Heuer and R. Schmutzler; vol. 39, pp. 197-216. .COPYRGT.1988).
BP Chemicals Limited
Truong Duc
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