Polymerica material suitable for making ammunition cartridge casings
AssigneeSolvay Advanced Polymers, L.L.C.
InventorsNikica Maljkovic, Todd S. Rushing
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Abstract
An ammunition article is provided which comprises a casing and a cap wherein the casing is formed from a polymeric material that has a room temperature notched Izod impact value greater than about 10 ft lbs/in and then has a ratio of notched Izod impact value at room temperature to notch Izod impact value at about −40° C. of less than about 4.
Claims24
1-65. (canceled)
A method of improving the viscoelastic response of a polymeric ammunition cartridge casing material comprising a polyphenylsulfone by blending the material with a high modulus polymer, wherein said high modulus polymer is a rigid-rod polyphenylene polymer or copolymer.
A blend comprising a polyphenylsulfone and a rigid-rod polyphenylene polymer or copolymer.
A method of producing a polymeric material useful for making an ammunition cartridge casing, said method comprising blending a high modulus polymeric material that has a room temperature flexural modulus of at least 500,000 psi (as measured by ASTM D790) with a resin material that has a room temperature notched Izod impact strength or value greater than about 10 ft-lb/in (as measured by ASTM D256-00) and that has a ratio of notched Izod strength value at room temperature to notched Izod impact value at about −40° C. of less than about 4,
- wherein the high modulus polymeric material is a rigid-rod polyphenylene polymer or copolymer material, and
- wherein the resin material is a polyphenylsulfone material.
Dependencies are inferred from the claim text.