Copolymer of carbon monoxide and ethylene containing ketal struc

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymer of an ethylenically unsaturated reactant with a...

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528271, 528480, 528490, 528495, C08G 6702, C08F 600

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active

055655467

ABSTRACT:
Copolymers comprising carbon monoxide and ethylene contain at least one type of ketal structure and possess enhanced thermal stability so as to be useful in the melt processing of fibers. These novel copolymers, as well as known polyketones with ketal structures, can be formed by treating a copolymer of carbon monoxide and at least one olefin with a mixture of acid, such as a sulfonic acid, which acts as a catalyst or catalyst/reagent, and alcohol, such as a lower alkanol.

REFERENCES:
patent: H983 (1991-11-01), Brown et al.
patent: 5041530 (1991-08-01), Van Doorn et al.
patent: 5106952 (1992-04-01), Drent
A. Batistini et al., "Mechanistic Aspects of Alternating Copolymerization of Carbon Monoxide with Olefins Catalyzed by Cationic Palladium Complexes", Organometallics 1992, 11, 1766-1769.
P. W. Wong et al., "Palladium-Catalyzed Alternating Copolymerization of Propylene and Carbon Monoxide. Formation of Poly(spiroketal/ketone)", Ind. Eng. Chem. Res. 1993, 32, 986-988.

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