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2 044 012

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Application

92009707/05, 1992-12-03

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Actual filing date

1992-12-03

(45)

Published

1995-09-20

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Inventor

Shchupljak Aleksandr AlekseevichPelevin Leonid Anatol'EvichShapovalov Oleg IvanovichBulatenkov Jurij VladimirovichGladkov Oleg Andreevich

(73)

Holder

Shchupljak Aleksandr AlekseevichPelevin Leonid Anatol'EvichShapovalov Oleg IvanovichBulatenkov Jurij VladimirovichGladkov Oleg Andreevich

METHOD FOR PRODUCTION OF WATER SOLUBLE DYE FOR WOOD Russian patent published in 1995 - IPC

Abstract RU 2044012 C1

FIELD: treatment of wood. SUBSTANCE: wastes of pulp and paper industry or excessive active silt of purification devices are used as raw materials for production of dye. Said raw materials are oxidized by air oxygen, the process is carried out at 140-200 C and pressure 0.4-1.8 MPa in alkali medium, concentration of alkali being 10-35 mass as calculated for raw materials. Yield of desired dye is 100 EFFECT: improves efficiency of the method.

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RU 2 044 012 C1

Authors

Shchupljak Aleksandr Alekseevich

Pelevin Leonid Anatol'Evich

Shapovalov Oleg Ivanovich

Bulatenkov Jurij Vladimirovich

Gladkov Oleg Andreevich

Dates

1995-09-20—Published

1992-12-03—Filed

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