Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1989-09-12
1990-10-30
Reamer, James H.
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
C07C27708
Patent
active
049670000
ABSTRACT:
A process of preparing spherical high bulk density nitroguanidine by dissing low bulk density nitroguanidine in N-methyl pyrrolidone at elevated temperatures and then cooling the solution to lower temperatures as a liquid characterized as a nonsolvent for the nitroguanidine is provided. The process is enhanced by inclusion in the solution of from about 1 ppm up to about 250 ppm of a metal salt such as nickel nitrate, zinc nitrate or chromium nitrate, preferably from about 20 to about 50 ppm.
REFERENCES:
patent: 4544769 (1985-10-01), Engel et al.
Feiser et al, "Reagents for Organic Synthesis", pp. 1109-1110 (1967).
Roemer Edward L.
Sanchez John A.
Stretz Lawrence A.
Cottrell Bruce H.
Gaetjens Paul D.
Moser William R.
Reamer James H.
The United States of America as represented by the Department of
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