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2 085 556

(13)

C1

(51)

IPC

(21) (22)

Application

92008213/04, 1992-11-25

(22)

Actual filing date

1992-11-25

(45)

Published

1997-07-27

(72)

Inventor

Bazanova G.V.Stotskij A.A.

(73)

Holder

Sankt-Peterburgskij Gosudarstvennyj Universitet Tekhnologii I Dizajna

METHOD OF SYNTHESIS OF 1,2,4-TRIAZOLONE-5 Russian patent published in 1997 - IPC

Abstract RU 2085556 C1

FIELD: organic chemistry and technology, heterocyclic compounds. SUBSTANCE: 1,2,4-triazolone-5 is synthesized by interaction of semicarbazide with an aqueous solution of mixture of formic, acetic, propionic and butyric acids and hydrochloric acid at reaction mixture boiling point for 2-3 h followed by distillation off unreacted acids and water from reaction mass. Ratio semicarbazide : acid mixture : hydrochloric acid = 1:(2.5-3.0): (0.37-0.75). Synthesized compound is used for large scale synthesis of highly effective activating agent for low-temperature peroxide whitening textile materials. EFFECT: improved method of synthesis. 1 tbl

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RU 2 085 556 C1

Authors

Bazanova G.V.

Stotskij A.A.

Dates

1997-07-27—Published

1992-11-25—Filed

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