Process for the preparation of compact nitroguanidine

Details Process for the preparation of compact nitroguanidine Process for the preparation of compact nitroguanidine

1980-09-08

1985-10-01

Trousof, Natalie

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C07C12912

Patent

active

045447691

ABSTRACT:
A method of preparing compact nitroguanidine of high bulk density by crystallization from an initially hot nitroguanidine solution. The solution is cooled, while being agitated, at a temperature gradient of at least 3.degree. C./minute, with the crystallization taking place, only at temperatures less than 50.degree. C., from a supersaturated solution. The solvent for the nitroguanidine solution is selected from the group consisting of polyhydric, lower aliphatic alcohols, the mono- or dialkyl ethers of these polyhydric, lower aliphatic alcohols, dimethylformamide, dimethyl sulfoxide, or mixtures thereof. The formed nitroguanidine, in addition to having a high bulk density, has a compact form which makes it possible to prepare a slurry from nitroguanidine and to be able to process nitroguanidine as a composition amenable to casting.

REFERENCES:
patent: 2946820 (1960-07-01), Henry et al.
Cave, G. Allen et al., Ind. & Eng. Chemistry, vol. 41, (1949), pp. 1286-1. 0
Pritchard, E. J. et al. Chemical Abstracts, vol. 42 (1948) #369c.
Hino, Kumao et al., Chemical Abstracts, vol. 56 (1962) #2338.
Hatler, L. E., Los Alamos Informal Report LA-5235-MS.
McGraw-Hill Encyclopedia of Science and Technology, vol. 13 (1971), p. 323.
Pritchard, E. J. et al., Can J. Research (1947), vol. 25, Sec. F, pp. 257-263.

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