Abstract:
PURPOSE: An energetic nitro-formal plasticizer for explosive formulations comprises eutectic mixture mixed with bis(2,2-dinitropropyl)formal(BDNPF), 2,2-dinitropropyl 2,2-dibutyl formal(DNPBF) and bis(2,2-dinitrobutyl)formal(BDNPF). The energetic nitro-formal plasticizer exhibits superior thermal/chemical properties with less production cost. CONSTITUTION: The molecular ratio of BDNPF/DNPBF/BDNPF in formulation of this plasticizer is in the range 20-68%/28-50%/4-30%. The plasticizer is allowed to contain diformal, however its content is desirable controlled to be not more than 3%. The preparation method of this plasticizer comprises the steps of (i) dissolving 2,2-dinitropropanol and 2,2-dinitrobutanol in the mole ratio of 3 to 6:1 at 0 to 30deg.C in an organic solvent like methylene chloride; (ii) at 20deg.C or lower, adding sulfuric acid solution in which formaldehyde sources such as paraformaldehyde and s-trioxane is dissolved; (iii) refining obtained mixture.
Abstract:
본 발명은 니트로트리오졸론(NTO) 결정의 형상 및 크기를 조절하는 재결정 방법에 있어서, 첨가제를 사용하지 않는 결정화 방법을 이용하여 다각형 형태를 갖는 다양한 크기의 입자를 조절하여 제조하는 방법에 관한 것인데, 특히, 용매로서 물, 알콜류 및 그의 혼합물로 이루어진 군 중에서 선택된 것을 사용하는 것을 특징으로 하는 NTO의 형상 및 입도 조절 방법을 제공한다.