METHOD FOR PRODUCTION OF POLYTETRAHYDROFURAN AND ITS ESTERS WITH MONOCARBOXYLIC ACIDS HAVING 1-10 CARBON ATOMS Russian patent published in 2001 - IPC

FIELD: polymer production. SUBSTANCE: title compounds are prepared by polymerization of tetrahydrofuran in presence of catalyst, containing catalytically active quantity of oxygen-containing tungsten and/or molybdenum compound supported by oxide carrier, and a telogen selected from group including water, 1,4- butanediol, polytetrahydrofuran with molecular weight 200-700 D, monocarboxylic C1-C10-acid or their mixtures. Peculiar feature of catalyst consists in that precursors of the aforesaid catalytic compounds are applied on hydroxide precursors of oxide carrier, after which ensemble of precursors is dried and calcined at 500 to 1000 C. EFFECT: increased catalytic selectivity with no loss in degree of conversion of tetrahydrofuran. 10 cl, 3 tbl, 15 ex