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2 526 616

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IPC

C07C51/567(2006-01-01)

C07C51/573(2006-01-01)

C07D307/89(2006-01-01)

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Application

2013112624/04, 2013-03-21

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Start date

2013-03-21

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Actual filing date

2013-03-21

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Published

2014-08-27

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Inventor

Andrievskij Aleksandr MikhajlovichLomzakova Vera IvanovnaAndrievskaja Galina Petrovna

(73)

Holder

Andrievskij Aleksandr Mikhajlovich

METHOD OF PRODUCING TETRABROMOPHTHALIC ANHYDRIDE Russian patent published in 2014 - IPC C07C51/567 C07C51/573 C07D307/89 

Abstract RU 2526616 C2

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing tetrabromophthalic anhydride via bromation of phthalic anhydride with molecular bromine in a medium of a concentrated inorganic acid in the presence of an oxidising agent while heating, wherein in order to simplify the process, the inorganic acid and oxidising agent used are 95-100% nitric acid, and the process is carried out at 45-70°C, followed by separation of the end product using known methods.

EFFECT: method lowers the process temperature and enables highly selective bromation.

2 cl, 1 tbl, 7 ex

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RU 2 526 616 C2

Authors

Andrievskij Aleksandr Mikhajlovich

Lomzakova Vera Ivanovna

Andrievskaja Galina Petrovna

Dates

2014-08-27—Published

2013-03-21—Filed

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