RU93034335A - METHOD FOR PRODUCING AZO-DYES - Google Patents

METHOD FOR PRODUCING AZO-DYES

Info

Publication number
RU93034335A
RU93034335A RU93034335/04A RU93034335A RU93034335A RU 93034335 A RU93034335 A RU 93034335A RU 93034335/04 A RU93034335/04 A RU 93034335/04A RU 93034335 A RU93034335 A RU 93034335A RU 93034335 A RU93034335 A RU 93034335A
Authority
RU
Russia
Prior art keywords
dyes
producing azo
producing
aminophenol
nitro
Prior art date
Application number
RU93034335/04A
Other languages
Russian (ru)
Other versions
RU2076126C1 (en
Inventor
М.В. Горелик
В.Я. Штейман
Е.А. Хамидова
А.М. Андриевский
Original Assignee
Московское научно-производственное объединение "НИОПИК"
Filing date
Publication date
Application filed by Московское научно-производственное объединение "НИОПИК" filed Critical Московское научно-производственное объединение "НИОПИК"
Priority to RU93034335A priority Critical patent/RU2076126C1/en
Priority claimed from RU93034335A external-priority patent/RU2076126C1/en
Publication of RU93034335A publication Critical patent/RU93034335A/en
Application granted granted Critical
Publication of RU2076126C1 publication Critical patent/RU2076126C1/en

Links

Claims (1)

Изобретение относится к области получения красителей, а именно к способу получения азокрасителей на основе 2-аминофенола. Цель - упрощение способа получения азокрасителей. Для этого 2-аминофенол диазотируют, нитрируют и полученную смесь сульфатов 5-нитро-2-гидрокси- и 3-нитро-2-гидрокси-бензолдиазония вводят в реакцию азосочетания. Заявляемый способ позволяет значительно сократить количество щелочи, что облегчает выделение красителя.The invention relates to the field of dyes, and in particular to a method for producing azo dyes based on 2-aminophenol. The goal is to simplify the method of producing azo dyes. For this, 2-aminophenol is diazotized, nitrated, and the resulting mixture of 5-nitro-2-hydroxy- and 3-nitro-2-hydroxy-benzenediazonium sulfates is introduced into the azo coupling reaction. The inventive method can significantly reduce the amount of alkali, which facilitates the release of dye.
RU93034335A 1993-07-01 1993-07-01 Method for production of azo dyes RU2076126C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU93034335A RU2076126C1 (en) 1993-07-01 1993-07-01 Method for production of azo dyes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU93034335A RU2076126C1 (en) 1993-07-01 1993-07-01 Method for production of azo dyes

Publications (2)

Publication Number Publication Date
RU93034335A true RU93034335A (en) 1996-10-10
RU2076126C1 RU2076126C1 (en) 1997-03-27

Family

ID=20144381

Family Applications (1)

Application Number Title Priority Date Filing Date
RU93034335A RU2076126C1 (en) 1993-07-01 1993-07-01 Method for production of azo dyes

Country Status (1)

Country Link
RU (1) RU2076126C1 (en)

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