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2 539 294

(13)

(51)

IPC

C07C253/34(2006-01-01)

C07C255/35(2006-01-01)

A62D101/26(2007-01-01)

(21) (22)

Application

2013154382/04, 2013-12-06

(24)

Start date

2013-12-06

(22)

Actual filing date

2013-12-06

(45)

Published

2015-01-20

(72)

Inventor

Kostjuchenko Igor' Valer'EvichEremin Sergej Anatol'EvichIvashev Igor' PetrovichBolgov Petr AlekseevichSerebrennikov Boris Vasil'EvichLoskutov Anatolij Jur'EvichKukhotkin Sergej Vladimirovich

(73)

Holder

Federal'Noe Gosudarstvennoe Kazennoe Uchrezhdenie Tsentral'Nyj Nauchno-Issledovatel'Skij Ispytatel'Nyj Institut" Ministerstva Oborony Rossijskoj Federatsii

METHOD OF O-CHLOROBENZALMALONONITRILE PURIFICATION Russian patent published in 2015 - IPC C07C253/34 C07C255/35 A62D101/26

Abstract RU 2539294 C1

FIELD: chemistry.

SUBSTANCE: method of o-chlorobenzalmalononitrile purification includes removal of admixtures and further processing of formed wastes to compounds, which are not ecological pollutants. Method is characterised by the fact that removal of admixtures from melt is carried out at temperature mode 120-130°C and residual vacuum 40-50 mm Hg with further processing of by-products with 20-25% steam-ammonia mixture at temperature 120-130°C. Method makes it possible to purify o-chlorobenzalmalononitrile to content of main substance not lower than 97%, which makes it suitable for further application.

EFFECT: increase of purification.

1 tbl, 6 ex

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RU 2 539 294 C1

Authors

Kostjuchenko Igor' Valer'Evich

Eremin Sergej Anatol'Evich

Ivashev Igor' Petrovich

Bolgov Petr Alekseevich

Serebrennikov Boris Vasil'Evich

Loskutov Anatolij Jur'Evich

Kukhotkin Sergej Vladimirovich

Dates

2015-01-20—Published

2013-12-06—Filed