Solvent-free preparation of gun propellant formulations

Plastic and nonmetallic article shaping or treating: processes – Explosive or propellant article shaping or treating – Extrusion to form sheet or rod

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149 194, 149 1992, C06B 4510, C06B 2100

Patent

active

046506179

ABSTRACT:
A solventless method for the preparation and storage of uncured low vulnerability ammunition propellant (LOVA) includes blending from about 60 to 80 weight percent of either HMX or RDX oxidizer having a weight mean diameter from 1.0 to 14 microns with a polyurethane binder. A cure effecting amount of cure catalyst may also be included. These ingredients are blended at a temperature below about 110.degree. F., deaired, and optionally stored at low temperatures at a pre-cured condition, extruded and subsequently cured. The products produced thereby have uniquely low burning rates as well as uniquely low burning rate exponents.

REFERENCES:
patent: 3888707 (1975-06-01), Rothstein
patent: 3943209 (1976-03-01), LoPresti et al.
patent: 4002514 (1977-01-01), Plomer et al.
patent: 4091729 (1978-05-01), Bell et al.
patent: 4263070 (1981-04-01), Price et al.
patent: 4456493 (1984-06-01), Barnes et al.
patent: 4462848 (1984-07-01), Elrick

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