METHOD OF PRODUCING OLIGOMERIC BORIC ACID ESTERS Russian patent published in 1999 - IPC

Abstract RU 2136704 C1

FIELD: organoelemental compounds. SUBSTANCE: process is accomplished by interaction of alkylene oxides and C₁-C₄-alcohols in presence of 0.02-0.5 wt % of alkali metal alcoholate followed by treating alkaline polymerizate obtained with boric acid and evacuation. Process is distinguished by preliminarily distilling away 10-30% of alkaline polymerizate and treating with boric acid still residue with boiling range 225-265 C and density 1.05-1.06 g/cu.cm. EFFECT: simplified process and reduced expenses. 3 cl, 4 ex

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RU 2 136 704 C1

Authors

Golubev Ju.D.

Logvinov A.S.

Bolotov V.A.

Shein A.V.

Sporova L.G.

Panjushev D.A.

Dates

1999-09-10—Published

1997-03-05—Filed