Recycle of spent acid in nitrolysis of hexamine to RDX
US4163845A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1978 |
| Grant date | Aug 7, 1979 |
| Priority date | — |
| Expiry date | Apr 26, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D251/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Recycle of spent acid in nitrolysis of hexamine to RDX is accomplished un conditions, which avoid or minimize the need to process the spent acid through conventional costly recovery operations and result in little, if any, reduction of RDX yield. The conditions include PA1 (a) effecting the simmering in spent acid containing between 0% and 2% water; PA1 (b) recycling at least part of the spent acid of 0-2% water content to dissolve the hexamine reactant; and PA1 (c) preferably also recycling a part of the spent acid, after elimination of any water contained therein with acetic anhydride, to the heel to which the reactants are added in the nitrolysis of hexamine to RDX.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.