Abstract: A high strength polymer-based cartridge having a polymer case with a first end having a mouth. A body can be formed below the mouth and having a propellant chamber and a longitudinal axis. A back end can be formed opposite the first end and formed below the body, with a first snap ridge comprising a first ridge angle at approximately at 90° to the longitudinal axis; and a second snap ridge, positioned closer to the first end than the first snap ridge, comprising a second ridge angle at approximately at 90° to the longitudinal axis. Further, an insert is configured to engage the back end.

Abstract: An ammunition article comprises a polymer cartridge case formed of a polymer composition comprising a thermoplastic polymer, preferably the polymer composition having a density of less than 1.35 determined in accordance with ASTM D792, the polymer cartridge case having a first end, an opposing second end, and a chamber disposed between the first end and the second end for receiving a propellant; a projectile attached to the first end of the polymer cartridge case; a metal base insert joined to the second end of the polymer cartridge case; and a primer carried by the metal base insert; wherein the metal base insert and the polymer cartridge case remain joined together as a single piece assembly upon loading, firing and removal from a chamber of a firearm for a polymer case temperature of ?65° F. (?54° C.) to 165° F. (74° C.).

Abstract: A polyetherimide composition comprises: a polyetherimide; and an organophosphorus stabilizer present in an amount effective to provide greater than 0.01 ppm to less than 20 ppm, preferably greater than 0.01 ppm to less than 10 ppm, and more preferably greater than 0.01 ppm to less than 4.8 ppm of phosphorus based on the total weight of the polyetherimide composition, the organophosphorus stabilizer having a molecular weight of 300 to 2,000 Daltons and a phosphorus content of 1 to 15 wt %; wherein a molded sample of the polyetherimide composition has a UL 94 V0 rating at a thickness of 1.5 mm.

Abstract: A cartridge has a polymer case with a mouth, a neck having a neck thickness (Tn), a shoulder, and a body having a case thickness (Tc). The body has a flat portion comprising a minimum thickness, a pull thickness (Tp), and a dip comprising a dip thickness (Tb). The cartridge also includes an insert attached to the polymer case opposite the shoulder. The insert can a bulge engaging the dip to maintain the insert on the polymer case. Tb and Tn are related by 1.0?Tb/Tn?1.5 or just <1.5. The ratio of the minimum thickness of the body to the neck thickness is between about 1.0 and about 1.5. The ratio of Tb to Tn includes, and/or the minimum thickness of the body to the neck thickness includes, but is not limited to, ratios of 1.00, 1.05, 1.10, 1.15, 1.20, 1.25, 1.30, 1.35, 1.40, 1.45, and 1.50.

Abstract: An ammunition article including a polymer cartridge case with a mouth at a first end, a second end opposite the first end, and a propellant chamber located between the first end and the second end. A projectile can be fitted into the mouth and a metal base insert can be joined at the second end. The metal base insert can include a primer. The metal base insert and the polymer cartridge case remain joined together as a single piece assembly upon loading, firing and removal from a chamber of a firearm for a polymer case temperature between about ?65° F. (?54° C.) to about 165° F. (74° C.).

Abstract: A cartridge has a polymer case with a mouth, a neck having a neck thickness (Tn), a shoulder, and a body having a case thickness (Tc). The body has a flat portion comprising a minimum thickness, a pull thickness (Tp), and a dip comprising a dip thickness (Tb). The cartridge also includes an insert attached to the polymer case opposite the shoulder. The insert can a bulge engaging the dip to maintain the insert on the polymer case. Tb and Tn are related by 1.0?Tb/Tn?1.5 or just <1.5. The ratio of the minimum thickness of the body to the neck thickness is between about 1.0 and about 1.5. The ratio of Tb to Tn includes, and/or the minimum thickness of the body to the neck thickness includes, but is not limited to, ratios of 1.00, 1.05, 1.10, 1.15, 1.20, 1.25, 1.30, 1.35, 1.40, 1.45, and 1.50.

Abstract: An ammunition article comprises a polymer cartridge case formed of a polymer composition comprising a thermoplastic polymer, preferably the polymer composition having a density of less than 1.35 determined in accordance with ASTM D792, the polymer cartridge case having a first end, an opposing second end, and a chamber disposed between the first end and the second end for receiving a propellant; a projectile attached to the first end of the polymer cartridge case; a metal base insert joined to the second end of the polymer cartridge case; and a primer carried by the metal base insert; wherein the metal base insert and the polymer cartridge case remain joined together as a single piece assembly upon loading, firing and removal from a chamber of a firearm for a polymer case temperature of ?65° F. (?54° C.) to 165° F. (74° C.).

Abstract: A polyetherimide composition includes a polyetherimide and two or more of a residual metal content, a sulfate anion, a phosphate anion, a nitrite anion, a nitrate anion, or a combination including at least one of the foregoing, a residual solvent content, a phosphorus-containing stabilizer, and alkali metal halide, alkaline earth metal halide, alkali metal carbonate, or a combination including at least one of the foregoing, wherein each of the aforementioned components, when present, is included in the composition in a particular amount. The resulting polyetherimide composition exhibits two or more useful properties. The polyetherimide composition can optionally further be combined with a polymer different from the polyetherimide to provide a thermoplastic composition. Methods of making the polyetherimide composition and articles including the polyetherimide composition are also described.

Abstract: A uniaxially-stretched, high yield extruded capacitor film comprising a miscible polymer blend comprising a polyetherimide and a polyester, wherein the polyetherimide comprises units derived from polymerization of an aromatic dianhydride with a diamine comprising a m-phenylenediamine, a p-phenylenediamine, or combinations thereof, wherein the polyetherimide is endcapped with a substituted or unsubstituted aromatic primary monoamine, wherein the polyester comprises repeating structural units derived from polymerization of an aromatic dicarboxylic acid with a dihydroxy compound, and wherein the high yield extruded capacitor film comprises equal to or greater than about 90 wt. % of the miscible polymer blend entering an extruder used for manufacturing the capacitor film, based on the total weight of miscible polymer blend prior to entering the extruder.

Abstract: Method of making an extruded thin film comprising: melt filtering an amorphous thermoplastic composition comprising an amorphous thermoplastic polymer with a glass transition temperature Tg of 130° C. to 280° C. to form a melt filtered amorphous thermoplastic composition; extruding the melt filtered amorphous thermoplastic composition into strands at a temperature TE; cooling the strands to a temperature Tc to form cooled strands; cutting the cooled strands into pellets having a length of 2.0 to 6.0 millimeters; treating the pellets at a temperature Ts to remove particulates having at least one of length, width, and height of less than 0.5 millimeters to form treated pellets; melting the treated pellets in an extruder at a temperature Tp to form a molten composition; and extruding the molten composition through a flat die to form a film having an average thickness less than or equal to 50 micrometers.

Abstract: Capacitors including ceramic composite materials, and associated methods are shown. In selected examples, ceramic materials for capacitor dielectrics are processed at low temperatures that permit incorporation of low temperature components, such as polymer components.

Abstract: Described herein is a composition comprising a polymer blend. The polymer blend comprises 92 to 99 weight percent of a polyphenylene ether sulfone and 1 to 8 weight percent of a polyalkylene terephthalate, wherein weight percent is based on the combined weight of the polyphenylene ether sulfone and polyalkylene terephthalate. The polymer blend has a transmittance greater than or equal to 60% and a haze less than or equal to 10% at a thickness of 3.2 millimeters, as determined according to ASTM D1003.

Abstract: A polyetherimide composition includes a polyetherimide and two or more of a residual metal content, a sulfate anion, a phosphate anion, a nitrite anion, a nitrate anion, or a combination including at least one of the foregoing, a residual solvent content, a phosphorus-containing stabilizer, and alkali metal halide, alkaline earth metal halide, alkali metal carbonate, or a combination including at least one of the foregoing, wherein each of the aforementioned components, when present, is included in the composition in a particular amount. The resulting polyetherimide composition exhibits two or more useful properties. The polyetherimide composition can optionally further be combined with a polymer different from the polyetherimide to provide a thermoplastic composition. Methods of making the polyetherimide composition and articles including the polyetherimide composition are also described.

Abstract: A uniaxially-stretched, high yield extruded capacitor film comprising a miscible polymer blend comprising a polyetherimide and a poly(carbonate-arylate ester), wherein the polyetherimide comprises units derived from polymerization of an aromatic dianhydride with a diamine comprising a m-phenylenediamine, a p-phenylenediamine, or combinations thereof, wherein the polyetherimide is endcapped with a substituted or unsubstituted aromatic primary monoamine, wherein the poly(carbonate-arylate ester) comprises repeating bisphenol carbonate units and repeating arylate ester units, wherein the repeating bisphenol carbonate units and the repeating arylate ester units are different from each other, and wherein the high yield extruded capacitor film comprises equal to or greater than about 90 wt. % of the miscible polymer blend entering an extruder used for manufacturing the capacitor film, based on the total weight of miscible polymer blend prior to entering the extruder.

Abstract: A uniaxially-stretched, high yield extruded capacitor film comprising a miscible polymer blend comprising a polyetherimide and a polyester, wherein the polyetherimide comprises units derived from polymerization of an aromatic dianhydride with a diamine comprising a m-phenylenediamine, a p-phenylenediamine, or combinations thereof, wherein the polyetherimide is endcapped with a substituted or unsubstituted aromatic primary monoamine, wherein the polyester comprises repeating structural units derived from polymerization of an aromatic dicarboxylic acid with a dihydroxy compound, and wherein the high yield extruded capacitor film comprises equal to or greater than about 90 wt. % of the miscible polymer blend entering an extruder used for manufacturing the capacitor film, based on the total weight of miscible polymer blend prior to entering the extruder.

Abstract: A polyetherimide film comprising a fluoropolymer and an extruded polyetherimide comprising units derived from polymerization of an aromatic dianhydride with a diamine selected from a meta-phenylene diamine, a para-phenylene diamine, and a combination thereof, wherein the polyetherimide is endcapped with an a substituted or unsubstituted aromatic primary monoamine; and wherein the polyetherimide film comprises at least 90 weight % of the polyetherimide before extrusion.

Abstract: Described herein is a composition comprising a polymer blend. The polymer blend comprises 92 to 99 weight percent of a polyphenylene ether sulfone and 1 to 8 weight percent of a polyalkylene terephthalate, wherein weight percent is based on the combined weight of the polyphenylene ether sulfone and polyalkylene terephthalate. The polymer blend has a transmittance greater than or equal to 60% and a haze less than or equal to 10% at a thickness of 3.2 millimeters, as determined according to ASTM D1003.

Abstract: A polyetherimide film comprising a fluoropolymer and an extruded polyetherimide comprising units derived from polymerization of an aromatic dianhydride with a diamine selected from a meta-phenylene diamine, a para-phenylene diamine, and a combination thereof, wherein the polyetherimide is endcapped with an a substituted or unsubstituted aromatic primary monoamine; and wherein the polyetherimide film comprises at least 90 weight % of the polyetherimide before extrusion.

Abstract: A uniaxially-stretched, high yield extruded film comprising a polyetherimide comprising units derived from polymerization of an aromatic dianhydride with a diamine selected from a meta-phenylene diamine, a para-phenylene diamine, and a combination thereof, wherein the polyetherimide is endcapped with an a substituted or unsubstituted aromatic primary monoamine; and wherein the high yield extruded film comprises at least 90 weight % of the polyetherimide before extrusion.

Abstract: A uniaxially-stretched, high yield extruded capacitor film comprising a miscible polymer blend comprising a polyetherimide and a poly(carbonate-arylate ester), wherein the polyetherimide comprises units derived from polymerization of an aromatic dianhydride with a diamine comprising a m-phenylenediamine, a p-phenylenediamine, or combinations thereof, wherein the polyetherimide is endcapped with a substituted or unsubstituted aromatic primary monoamine, wherein the poly(carbonate-arylate ester) comprises repeating bisphenol carbonate units and repeating arylate ester units, wherein the repeating bisphenol carbonate units and the repeating arylate ester units are different from each other, and wherein the high yield extruded capacitor film comprises equal to or greater than about 90 wt. % of the miscible polymer blend entering an extruder used for manufacturing the capacitor film, based on the total weight of miscible polymer blend prior to entering the extruder.