Substantially isotactic, linear, alternating copolymers of carbo

Details Substantially isotactic, linear, alternating copolymers of carbo Substantially isotactic, linear, alternating copolymers of carbo

1995-04-18

1996-05-28

Dodson, Shelley A.

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

Synthetic resins

Polymer of an ethylenically unsaturated reactant with a...

525539, 528271, 528488, 528491, 528492, C08G 6702, C08F 600

Patent

active

055212816

ABSTRACT:
The compound, [Pd(Me-DUPHOS)(MeCN).sub.2 ](BF.sub.4).sub.2, [Me-DUPHOS: 1,2-bis(2,5-dimethylphospholano)benzene] is an effective catalyst for the highly enantioselective, alternating copolymerization of olefins, such as aliphatic .alpha.-olefins, with carbon monoxide to form optically active, isotactic polymers which can serve as excellent starting materials for the synthesis of other classes of chiral polymers. For example, the complete reduction of a propylene-carbon monoxide copolymer resulted in the formation of a novel, optically active poly(1,4-alcohol). Also, the previously described catalyst is a catalyst for the novel alternating isomerization cooligomerization of 2-butene with carbon monoxide to form optically active, isotactic poly(1,5-ketone)

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