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2 362 758

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(51)

IPC

C06B21/00(2006-01-01)

C06B25/34(2006-01-01)

(21) (22)

Application

2008111438/04, 2008-03-24

(24)

Start date

2008-03-24

(22)

Actual filing date

2008-03-24

(45)

Published

2009-07-27

(72)

Inventor

Anikeev Vladimir NikolaevichMotina Elena VjacheslavovnaZhukov Jurij NikolaevichJankilevich Vasilij MoiseevichLarionov Boris Vital'EvichLobanova Antonina AlekseevnaPevchenko Boris Vasil'EvichZhukov Anatolij NikolaevichPerevedentsev Petr Pavlovich

(73)

Holder

Federal'Noe Kazennoe Predprijatie Oleumnyj Zavod"

METHOD FOR OCTOGEN RECRYSTALLISATION Russian patent published in 2009 - IPC C06B21/00 C06B25/34

Abstract RU 2362758 C1

FIELD: chemistry.

SUBSTANCE: invention refers to the method for octogen recrystallisation by the way of its partial dissolution in the water solution of ε-caprolactam during heating with following cooling differing in the fact that octogen beforehand disintegrated up to specific surface area 2800 cm²/g - 4000 cm²/g is processed in the 70% water solution of ε-caprolactam with mass ratio of solution of ε-caprolactam to octogen being equal to 3-10:1, heated up to the temperature 50÷80°C, allowed and the cooled to 10÷25°C. The said method of octogen recrystallisation allows to obtain the β-octogen of necessary fractions with average particle size d_av=150±20 mcm and 50±10 mcm and acidity less than 0.03% with feasible and economic way.

EFFECT: providing of feasible and economic method for preparation of β-octogen necessary fractions

3 cl, 4 ex

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RU 2 362 758 C1

Authors

Anikeev Vladimir Nikolaevich

Motina Elena Vjacheslavovna

Zhukov Jurij Nikolaevich

Jankilevich Vasilij Moiseevich

Larionov Boris Vital'Evich

Lobanova Antonina Alekseevna

Pevchenko Boris Vasil'Evich

Zhukov Anatolij Nikolaevich

Perevedentsev Petr Pavlovich

Dates

2009-07-27—Published

2008-03-24—Filed