METHOD OF PREPARING COLOPHONY ETHERS Russian patent published in 1998 - IPC

Abstract RU 2119517 C1

FIELD: wood chemical industry, more particularly production of colophony and derivatives thereof. SUBSTANCE: colophony with multihydric alcohols is heated in inert gas atmosphere to 280-290 C for 2 or 3 hours, in the presence of 0.1-0.5 wt % thiosulphate of colophony weight and 0.1- 0.5 wt % of compounds 1 or 2 or 3 and 2 of general formula: by colophony weight in 1:1 ratio of components in the mixture. The claimed method reduces process duration, improves quality of product with respect to color intensity and increases oxidation stability thereof. EFFECT: more efficient preparation method. 14 ex, 1 tbl

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RU 2 119 517 C1

Authors

Radbil' B.A.

Kushnir S.R.

Trofimov A.N.

Bogdanov P.E.

Ismagilov R.M.

Siplivykh V.I.

Dates

1998-09-27Published

1996-07-01Filed