초록 ▼

A combustible cartridge case is provided that includes at least one energetic thermoplastic homopolymer or copolymer derived from, at least in part, poly(bis-azidomethyloxetane) prepolymer blocks terminated with isocyanate-reactive groups, such as hydroxyl groups. Chain linking of the prepolymer blo

A combustible cartridge case is provided that includes at least one energetic thermoplastic homopolymer or copolymer derived from, at least in part, poly(bis-azidomethyloxetane) prepolymer blocks terminated with isocyanate-reactive groups, such as hydroxyl groups. Chain linking of the prepolymer blocks is performed with diisocyanates for end-capping the prepolymer blocks, and a difunctional linking compound for linking the end-capped prepolymer blocks. The energetic thermoplastic is preferably capable of being pressed, extruded, rotational molded, injection loaded, or otherwise shaped into a desired configuration. Also provided is a chain-extended poly(bis-azidomethyloxetane) homopolymer derived from bis-azidomethyloxetane prepolymer blocks, which are terminated with isocyanate-reactive groups and chain extended with at least one diisocyanate end-capping compound and at least one difunctional linking compound.

대표청구항 ▼

A combustible cartridge case is provided that includes at least one energetic thermoplastic homopolymer or copolymer derived from, at least in part, poly(bis-azidomethyloxetane) prepolymer blocks terminated with isocyanate-reactive groups, such as hydroxyl groups. Chain linking of the prepolymer blo

A combustible cartridge case is provided that includes at least one energetic thermoplastic homopolymer or copolymer derived from, at least in part, poly(bis-azidomethyloxetane) prepolymer blocks terminated with isocyanate-reactive groups, such as hydroxyl groups. Chain linking of the prepolymer blocks is performed with diisocyanates for end-capping the prepolymer blocks, and a difunctional linking compound for linking the end-capped prepolymer blocks. The energetic thermoplastic is preferably capable of being pressed, extruded, rotational molded, injection loaded, or otherwise shaped into a desired configuration. Also provided is a chain-extended poly(bis-azidomethyloxetane) homopolymer derived from bis-azidomethyloxetane prepolymer blocks, which are terminated with isocyanate-reactive groups and chain extended with at least one diisocyanate end-capping compound and at least one difunctional linking compound. erein said aromatic compound is at least one member selected from the group consisting of phenyl and halogenated phenyl. 6. The polyalkylaromaticsilsesquioxane as claimed in claim 1 wherein said lower alkyl group is at least one member selected from the group consisting of methyl, ethyl and propyl. 7. The method as claimed in claim 2 wherein said metal is at least one selected from the group consisting of sodium and potassium. 8. The method as claimed in claim 2 wherein said condensation reaction is accomplished without catalyst. 9. The method as claimed in claim 3 wherein said alkali metal hydroxide is at least one member selected from the group consisting of sodium hydroxide, potassium hydroxide and cesium hydroxide. 10. The method as claimed in claim 3 wherein said amine is at least one member selected from the group consisting of triethyl amine, diethylene triamine, n-butyl amine, p-dimethyl aminoethanol, and triethanol amine. US-5037924, 19910800, Tazi et al.; US-5082913, 19920100, Tazi et al.; US-5122161, 19920600, Benfaremo et al.; US-5126403, 19920600, Graiver et al.; US-5156920, 19921000, Aycock et al.; US-5202384, 19930400, Pyke et al.; US-5212227, 19930500, Sakazume et al.; US-5219628, 19930600, Hathaway et al.; US-5225498, 19930700, Sorathia et al.; US-5244971, 19930900, Jean-Marc; US-5247020, 19930900, Nakano et al.; US-5256710, 19931000, Krivohlavek; US-5300569, 19940400, Drake et al.; US-5318854, 19940600, Hamersma et al.; US-5356953, 19941000, Harada et al.; US-5373048, 19941200, Witzeman et al.; US-5414044, 19950500, Moriya et al.; US-5432662, 19950700, Kato et al.; US-5472741, 19951200, Sackmann et al.; US-5489657, 19960200, Sue et al.; US-5494964, 19960200, Meichsner et al.; US-5494981, 19960200, Gorodisher et al.; US-5508334, 19960400, Chen; US-5532316, 19960700, Shinmura et al.; US-5532317, 19960700, Shinmura et al.; US-5536774, 19960700, Segatta; US-5548031, 19960800, Doi; US-5585434, 19961200, DeNicola, Jr. et al.; US-5585436, 19961200, Niessner et al.; US-5602200, 19970200, Wissmann; US-5618881, 19970400, Hojabr; US-5634122, 19970500, Loucks et al.; US-5637410, 19970600, Bonner et al.; US-5651927, 19970700, Auda et al.; US-5652307, 19970700, Niessner et al.; US-5654364, 19970800, Bates et al.; US-5655820, 19970800, Kervagoret; US-5658985, 19970800, Eichenauer et al.; US-5665820, 19970900, Leistner et al.; US-5670006, 19970900, Wilfong et al.; US-5684122, 19971100, Inoue et al.; US-5691411, 19971100, Khouri et al.; US-5710228, 19980100, Krause et al.; US-5776234, 19980700, Schilling; US-5783630, 19980700, Evans et al.; US-5798413, 19980800, Spelthann et al.; US-5798414, 19980800, Mishima et al.; US-5821032, 19981000, DoMinh; US-5869695, 19990200, Ulmer et al.; US-5883188, 19990300, Hwang et al.; US-5905116, 19990500, Wang et al.; US-5912296, 19990600, Wang et al.; US-5962572, 19991000, Chen; US-5965666, 19991000, Koo et a