Process for producing optically active polyketone

Details Process for producing optically active polyketone Process for producing optically active polyketone

1996-03-13

1997-05-20

Acquah, Samuel A.

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

Synthetic resins

Polymer of an ethylenically unsaturated reactant with a...

525539, 502162, 502167, 430321, C08G 6702

Patent

active

056313454

ABSTRACT:
A process for producing optically active polyketone which comprises allowing a mono-substituted ethylene to react with carbon monoxide in the presence of a palladium-phosphine complex formed from a phosphine represented by the following general formula (I) ##STR1## (wherein Ar.sup.1 is a phenyl group which may be substituted with one or more substituent groups selected from a lower alkyl group, a lower alkoxy group and a halogen) and a palladium salt. An isotactic (stereoregular) optically active polyketone having high molecular weight (Mn) in which the direction of a mono-substituted ethylene against ketone is a head to tail type (positional regularity) can be produced efficiently by a simple and easy process for the copolymerization of propylene, styrene or the like mono-substituted ethylene with carbon monoxide.

REFERENCES:
American Chemical Society, Polymer Preprints, vol. 35 No. 1 Mar. 1994.
"Stero-and Enantioselective Alternating Copolymerization of .alpha.-Olefins with Carbon Monoxide. Synthesis of Chiral Polymers", Macromolecules 1994, 27, 2694-2700.
"regio-, Staro-, and Enantioselective Alternating Copolymerization of Propene with Carbon Monoxide", Macromolecules 1994, 27, 4436-4440.

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