公开(公告)号：US20210231420A1

公开(公告)日：2021-07-29

申请号：US17264599

申请日：2019-07-26

申请人： SHPP GLOBAL TECHNOLOGIES B.V.

发明人： Mark A. SANNER ,  Ernest Ford CALDWELL ,  Charles PADGETT ,  Christopher WALL ,  Gerould HARDING ,  Lanse PADGETT

IPC分类号： F42B5/307

摘要： 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.).

公开(公告)号：US20230044498A1

公开(公告)日：2023-02-09

申请号：US17783507

申请日：2020-12-30

申请人： SHPP GLOBAL TECHNOLOGIES B.V.

发明人： Mark A. SANNER ,  Raghavendra Raj MADDIKERI ,  Thomas Link GUGGENHEIM ,  Manojkumar CHELLAMUTHU

IPC分类号： C08G73/10 ,  C08K5/526

摘要： 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.