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2 078 754

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C1

(51)

IPC

(21) (22)

Application

93028287/04, 1993-06-02

(22)

Actual filing date

1993-06-02

(45)

Published

1997-05-10

(72)

Inventor

Gogotov A.F.Aleksandrova G.P.Babkin V.A.

(73)

Holder

Irkutskij Institut Organicheskoj Khimii So Ran

METHOD FOR ISOLATION OF VANlLLIN Russian patent published in 1997 - IPC

Abstract RU 2078754 C1

FIELD: production of medicinal preparations. SUBSTANCE: method is carried out by extraction of oxidized lignin with the help of benzene. The process takes place in the presence of coagulants, their quantity being 0.25-1.0 mass % as calculated for lignin. Polymers or copolymers of polyacrylamide having molecular weight (10-12)•106 are used as mentioned above coagulants. EFFECT: improved efficiency of the method. 1 tbl

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RU 2 078 754 C1

Authors

Gogotov A.F.

Aleksandrova G.P.

Babkin V.A.

Dates

1997-05-10—Published

1993-06-02—Filed

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