ALKYLENE OXIDE HYDROLYSIS METHOD INVOLVING CATALYST-STABILIZING ADDITIVE Russian patent published in 2004 - IPC

FIELD: industrial organic synthesis.

SUBSTANCE: alkylene oxides, appropriate for use in antifreeze compositions, as solvents, and as polyalkylene terephthalate intermediates, are prepared by reaction of alkylene oxide of formula I:

(I), in which R¹-R⁴ independently represent hydrogen atom or optionally substituted C₁-C₆-alkyl group, with water in presence of solid catalytic composition containing (i) strongly basic ion-exchange resin with attached one or more anions selected from metallates, carboxylates, bicarbonate, and bisulfite and (ii) stabilizing additive, namely acid ion-exchange resin, wherein, according to exchange capacity or active center equivalent, relative amount of acid ion-exchange resin goes from 15 to 100% of total capacity of strongly basic ion-exchange resin.

EFFECT: increased selectivity of process without use of large amounts of water.

8 cl, 9 tbl, 33 ex