Carbon monoxide/norbornene copolymer having spiroketal structura

Details Carbon monoxide/norbornene copolymer having spiroketal structura Carbon monoxide/norbornene copolymer having spiroketal structura

1990-05-07

1992-04-21

Anderson, Harold D.

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

Synthetic resins

Polymer of an ethylenically unsaturated reactant with a...

528271, C08G 6702

Patent

active

051069520

ABSTRACT:
An improved process for the production of linear alternating polymers of carbon monoxide and norbornene-type compounds wherein substantially all of the moieties originating from the carbon monoxide are in a spiroketal structure which comprises contacting the carbon monoxide and norbornene compound in a liquid reaction diluent at a temperature below 55.degree. C. in the presence of a catalyst composition formed from a compound of palladium, the anion of a non-hydrohalogenic acid having a pKa below 2, a bidentate ligand of nitrogen and an organic oxidant, the molar ratio of the bidentate ligand to the anion being at least 4.

REFERENCES:
patent: 3694412 (1972-09-01), Nozaki
patent: 4788279 (1988-11-01), Drent
patent: 4960857 (1990-10-01), Drent

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