Claims
- 1. An ammunition for a barrel weapon comprising a shell (1), said shell having a base (2) crimped to one first end of said shell, said base carrying a primer (3), said shell having a constriction (4) at the end opposite to said first end, a propellant powder being placed in said shell, a projectile being crimped in said construction, said shell having an inner surface, an antierosive sleeve surrounding said inner surface in the portion close to said projectile, said sleeve consisting essentially of a solid matrix of polystyrene or polymethyl methacrylate and containing 20-85% of droplets of a liquid silicone oil dispersed and occluded in said matrix of size between 5 and 45 microns.
- 2. The ammunition according to claim 1 wherein said matrix is prepared by polymerization of styrene or methyl methacrylate in the presence of divinyl benzene and said liquid oil.
- 3. An ammunition for a barrel weapon comprising a shell (1), said shell having a base (2) crimped to one first end of said shell, said base carrying a primer (3), said shell having a constriction (4) at the end opposite to said first end, a propellant charge being placed in said shell, a projectile being crimped in said constriction, and a wad inserted between said propellant charge and the base of said projectile, said wad consisting of an antierosive solid matrix essentially consisting of a solid matrix of polystyrene or polymethyl methacrylate and containing 20-85% of droplets of a liquid silicone oil dispersed and occluded in said matrix of size between 5 and 45 microns, said matrix being prepared by polymerization of styrene or methyl methacrylate in the presence of divinyl benzene, said liquid oil and as a surface active agent a block copolymer containing two-block or three-block repeat units, one repeat unit being compatible with said liquid oil and the other repeat unit being compatible with said monomer, said surface-active agent having a number-average molecular mass of between 500 and 500,000.
Priority Claims (1)
Number |
Date |
Country |
Kind |
87 17670 |
Dec 1987 |
FRX |
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Parent Case Info
This is a divisional of application Ser. No. 280,126, filed Dec. 5, 1988 now U.S.. Pat. No. 4,994,203.
US Referenced Citations (11)
Foreign Referenced Citations (1)
Number |
Date |
Country |
742908 |
Sep 1966 |
CAX |
Divisions (1)
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Number |
Date |
Country |
Parent |
280126 |
Dec 1988 |
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