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2 176 998

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IPC

(21) (22)

Application

98107428/04, 1998-04-22

(24)

Start date

1998-04-22

(22)

Actual filing date

1998-04-22

(45)

Published

2001-12-20

(72)

Inventor

Baranskij V.A.Eliseeva G.D.Timokhin B.V.Platonova V.N.Berezina L.N.Pan'Ko V.I.Diss G.D.

(73)

Holder

Irkutskij Gosudarstvennyj Universitet

METHOD OF PREPARING LEVULINIC ACID Russian patent published in 2001 - IPC

Abstract RU 2176998 C2

FIELD: perfume, pharmaceutical, metal-working industries, and organic synthesis. SUBSTANCE: levulinic acid is prepared by hydrolysis of hexose-containing stock with diluted hydrochloric acid in the presence of manganese dioxide in amount of 0.19-0.3 % of weight of hexose- containing stock for 30-35 h at atmospheric pressure and at temperature of 105-107 C. EFFECT: greater yield of the desired product and simplified process. 2 cl, 3 ex, 2 tbl

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RU 2 176 998 C2

Authors

Baranskij V.A.

Eliseeva G.D.

Timokhin B.V.

Platonova V.N.

Berezina L.N.

Pan'Ko V.I.

Diss G.D.

Dates

2001-12-20—Published

1998-04-22—Filed

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