METHOD OF PREPARING MIXED PLASTICIZER (VARIANTS)

chemical industry. SUBSTANCE: described are methods of preparing mixed plasticizer consisting of 2,4-dinitro-2,4-diazahexane and 3,5-diazaheptane. First method comprises reacting N,N'- dialkylurea of general formula: RN(H)CON(H)R, wherein R=CH3 or C2H5, with oleum, formaldehyde and nitrating mi...

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Bibliographic Details
Main Authors ERMAKOV A.S, VARFOLOMEEVA O.N, SIGAJ N.V, TARTAKOVSKIJ V.A
Format Patent
LanguageEnglish
Russian
Published 20.06.2001
Edition7
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:chemical industry. SUBSTANCE: described are methods of preparing mixed plasticizer consisting of 2,4-dinitro-2,4-diazahexane and 3,5-diazaheptane. First method comprises reacting N,N'- dialkylurea of general formula: RN(H)CON(H)R, wherein R=CH3 or C2H5, with oleum, formaldehyde and nitrating mixture and further with aminoderivative of general formula: RN(NO2)R' wherein R'=H or CH2N(NO2)R. Second method (variant) comprises reacting amidoderivative with formaldehyde and nitrating mixture at lower temperature. Aminoderivative is compound of general formula: RNHSO3H, wherein R=CH3 or C2H5, which is further reacted with aminoderivative of general formula: RN(NO2)R', wherein R'=H or CH2N(NO2)R.. Claimed methods make it possible to substantially widen raw materials used and to increase yield of the product to 91 %. EFFECT: more efficient preparation method. 3 cl, 2 ex, 2 tbl
Bibliography:Application Number: RU20000116324