Preparation of catalyst solution

Details Preparation of catalyst solution Preparation of catalyst solution

1997-01-15

1997-11-04

Acquah, Samuel A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymer of an ethylenically unsaturated reactant with a...

528392, 528396, 524709, 524711, 524713, 502162, C08G 6702, C08K 549, B01J 3100

Patent

active

056841230

ABSTRACT:
A process for the preparation of a solution of a catalyst system, suitable for use in a process for copolymerizing carbon monoxide and one or more ethylenically unsaturated compounds, which comprises (a) combining a palladium compound, a bisphosphine of the general formula R.sup.1 R.sup.2 P--R--PR.sup.3 R.sup.4 (I) wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently represents an aromatic hydrocarbyl group which is substituted with an alkoxy group and R represents a bivalent bridging group containing at least two carbon atoms in the bridge, and a lower alcohol as solvent, and (b) admixing the obtained combination after a generation period G, during which a temperature T in the range of 0.degree.-70.degree. C. is maintained, with an acid having a pKa of less than 2, whereby the said generation period G is selected such that the value for G (in hours) and the temperature T in .degree.C.) are related as ##EQU1##

REFERENCES:
Encl. PCT Search Report May 9, 1995.

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