# US 10,479,738 B2 · Compositions usable as flare compositions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,479,738 B2 - Document ID: US10479738B2 - Status: Granted - Kind: B2 - Application number: 16/208,840 - Filed: 2018-12-04 - Published: 2019-04-04 - Granted: 2019-11-19 - Earliest claimed: 2014-10-16 - Assignees: Northrop Grumman Innovation Systems, Inc. - Applicants: Northrop Grumman Innovation Systems, Inc. - Inventors: Daniel B. Nielson; Curtis W. Fielding - Web page: https://patentgrep.com/patent/US10479738B2 ## CPC - C06B 43/00: Compositions characterised by explosive or thermic constituents not provided for in groups C06B25/00 - C06B41/00 - C06B 27/00: Compositions containing a metal, boron, silicon, selenium or tellurium or mixtures, intercompounds or hydrides thereof, and hydrocarbons or halogenated hydrocarbons - C06C 15/00: Pyrophoric compositions; Flints (chemical lighters C06C9/00) - F42B 4/26: Flares; Torches {(mines for practice or training containing flares or illuminating charges F42B8/28; projectiles of illuminating type F42B12/42)} - C06B: EXPLOSIVES OR THERMIC COMPOSITIONS (blasting F42D); MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES (compounds in general C01, C07 or C08; {demolition agents based on cementitious or like materials C04B41/0009}) - C06C: DETONATING OR PRIMING DEVICES; FUSES (ammunition fuzes F42C); CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS - F42B: EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION (explosive compositions C06B; fuzes F42C; blasting F42D) ## Abstract A composition that includes a fuel and a perfluoropolyether (PFPE) is disclosed. The composition may be used as a flare composition in a countermeasure device. Countermeasure devices including the flare composition are also disclosed, as are methods of forming grains of the countermeasure device. ## Claims ### Claim 1 A composition, comprising: a fuel; a perfluoropolyether (PFPE) having a chemical structure of HO(CH2CH2O)nCH2CF2O(CF2CF2O)p(CF2O)qCF2CH2(OCH2CH2)nOH and a fluorine content of about 57% by weight of the PFPE, where n is an integer between 1 and 10, p is an integer between 1 and 50, and q is an integer between 1 and 50; and an isocyanate compound, the PFPE comprising from about 15 wt % to about 35 wt % of the composition. ### Claim 2 (depends on 1) The composition of claim 1, wherein the PFPE comprises from about 20 wt % to about 35 wt % of the composition. ### Claim 3 (depends on 1) The composition of claim 1, wherein the PFPE comprises from about 30 wt % to about 35 wt % of the composition. ### Claim 4 (depends on 1) The composition of claim 1, wherein the fuel comprises magnesium. ### Claim 5 (depends on 1) The composition of claim 1, wherein the fuel comprises magnesium and aluminum. ### Claim 6 (depends on 1) The composition of claim 1, further comprising boron. ### Claim 7 (depends on 1) The composition of claim 1, further comprising polytetrafluoroethylene. ### Claim 8 (depends on 1) The composition of claim 1, further comprising polytetrafluoroethylene, a terpolymer of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride, a copolymer of tetrafluoroethylene and perfluorovinylether, a copolymer of tetrafluoroethylene and ethylene, or a copolymer of tetrafluoroethylene and hexafluoropropylene. ### Claim 9 A composition, comprising: a fuel; a perfluoropolyether (PFPE) having a chemical structure of HO(CH2CH2O)nCH2CF2O(CF2CF2O)p(CF2O)qCF2CH2(OCH2CH2)nOH and a fluorine content of about 57% by weight of the PFPE, where n is an integer between 1 and 10, p is an integer between 1 and 50, and q is an integer between 1 and 50; and an isocyanate compound, the PFPE comprising from about 20 wt % to about 35 wt % of the composition. ### Claim 10 (depends on 9) The composition of claim 9, wherein the fuel comprises at least one of magnesium and aluminum. ### Claim 11 (depends on 9) The composition of claim 9, wherein the fuel comprises zirconium. ### Claim 12 (depends on 9) The composition of claim 9, further comprising carbon. ### Claim 13 (depends on 9) The composition of claim 9, further comprising a cure catalyst. ### Claim 14 (depends on 9) The composition of claim 9, further comprising boron, phosphorous, or silicon. ### Claim 15 A composition, comprising: a fuel; a perfluoropolyether (PFPE) having a chemical structure of HO(CH2CH2O)nCH2CF2O(CF2CF2O)p(CF2O)qCF2CH2(OCH2CH2)nOH and a fluorine content of about 57% by weight of the PFPE, where n is an integer between 1 and 10, p is an integer between 1 and 50, and q is an integer between 1 and 50; and an isocyanate compound, the PFPE comprising from about 15 wt % to about 35 wt % of the composition, and the composition formulated to produce an infrared intensity of at least about 95% of an infrared intensity of a composition comprising magnesium, polytetrafluoroethylene, and a copolymer of vinylidenefluoride and hexafluoropropylene (MTV composition). ### Claim 16 (depends on 15) The composition of claim 15, wherein the composition is formulated to produce an infrared intensity greater than or equivalent to the infrared intensity of the MTV composition. ### Claim 17 (depends on 15) The composition of claim 15, wherein the composition is formulated to produce a comparable or increased burn time compared to the MTV composition. ### Claim 18 (depends on 15) The composition of claim 15, wherein the composition is formulated to produce a burn time of from about 1.5 times to about 2 times greater than that of the MTV composition. ### Claim 19 (depends on 15) The composition of claim 15, wherein the composition is formulated to produce a comparable or increased rise time compared to the MTV composition. ### Claim 20 (depends on 15) The composition of claim 15, wherein the composition is formulated to produce a rise time of at least about 95% of the rise time of the MTV composition.