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Ring‐opening polymerization of tetrahydrofuran with rare earth‐contained catalysts

机译:Ring‐opening polymerization of tetrahydrofuran with rare earth‐contained catalysts

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AbstractRare earth trifluoroacetates, Ln(CF3CO2)3(Ln=thirteen rare earth elements), combined with RnAlH3−n(R=methyl, octyl,n=3; R=ethyl,i‐Butyl,n=2,3) were used as catalysts for the polymerization of tetrahydrofuran (THF). The activity increased by adding propylene oxide (PO), as a promoter, to the polymerization system, producing high molecular weight polytetrahydrofuran (PTHF). The effects of Ln, PO/Ln, and Al/Ln, and others on the polymerization of THF were also studied. © 1993 John WileySons,

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