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- W2122079328 abstract "Pyrolysis-gas chromatography of alternating carbon monoxide-olefin co- and terpolymers was studied. Ethylene (E) and/or propylene (P)carbon monoxide (CO) co- and terpolymers (ECO, PCO and EPCO, respectively) and ethylene-styrene (S)carbon monoxide terpolymers (ESCO) were prepared by palladium catalyst and pyrolyzed at 550 °C for 10 s. Various linear ketones, cyclic compounds and ketoesters were identified among the degradation products of ECO. The product distribution supports the hypothesis that chain scissions and cyclization reactions take place at the same time in the thermal degradation of this copolymer. The pyrolyzed products of the PCO copolymer are explained as the methyl derivatives of the corresponding products of the ECO copolymer. The products of the ethylene-based terpolymers are divided into three categories; that is, those formed from ECO/ECO, ECO/P(S)CO and P(S)CO/P(S)CO dyads. The EPCO1 sample, which contained 31% of PCO unit, gave the pyrolyzed products from the PCO/PCO dyad in a very small amount. The ESCO terpolymers showed somewhat different degradation behavior from that of styrene–carbon monoxide copolymer." @default.
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- W2122079328 date "2002-09-01" @default.
- W2122079328 modified "2023-10-06" @default.
- W2122079328 title "Characterization of co- and terpolymers of carbon monoxide and olefins by pyrolysis-gas chromatography" @default.
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- W2122079328 doi "https://doi.org/10.1016/s0165-2370(02)00038-4" @default.
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