METHOD OF THE GRANULATED PENTAERYTHRITOL TETRANITRATE PREPARING Russian patent published in 1997 - IPC

FIELD: production of explosive substances. SUBSTANCE: pentaerythritol tetranitrate and 0.02-0.04 wt.-% polymeric binding agent were dissolved in 4.6-7.0 vol. mixture of acetone and 0.4-0.8 vol. methylene chloride or isopropyl acetate or trichloroethylene or dichloroethane. The prepared solution is mixed with 4.0-7.5 vol. water, organic solvent is removed, solid phase is separated from liquid one and the prepared granules were dried. Before addition of pentaerythritol tetranitrate to water neutralizing agent, for example, sodium or magnesium carbonate or ammoniacal water were added to it. EFFECT: improved method of preparing. 1 tbl, 2 cl