Polysaccharide Or Derivative Thereof Patents (Class 149/19.7)
  • Patent number: 10028504
    Abstract: A biocidal and sporicidal smoke composition(s) using iodine oxide and metal powder is provided. This composition generates iodine gas or smoke as the primary biocidal agent, as well as metal oxides that provide additional biocidal properties. The smoke producing composition is suitable for pressing into canisters of compacted powder at a load pressure range of 1500 to 7500 psi and can be used for decontamination of spaces believed to be contaminated with biological agents. The composition is also suitable for use in hand grenades, smoke pots, rifle grenades, mortars, multiple launch grenades, shoulder fired missiles, and artillery rounds, as well as first responder and commercial biological decontamination applications.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: July 24, 2018
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: Amee L Polk, Michael F. Kauzlarich, Lisa S. Smith, Nino L. Bonavito, Vipin K. Rastogi
  • Patent number: 9914671
    Abstract: The present application discloses an improved electrically controlled propellant wherein the electrically controlled propellant comprises at least one compound selected from the group comprising organosilanes, siloxanes, and poly(dimethylsiloxane)s.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: March 13, 2018
    Assignee: Digital Solid State Propulsion LLC
    Inventor: Michael D. McPherson
  • Patent number: 9382168
    Abstract: The present application discloses a variety of improvements that enhance at least one of the mechanical, chemical/energetic, ballistic, or adhesive properties, of a class of ECPs, regardless of whether said ECPs are in solid phase or gels, singly or in combinations thereof.
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: July 5, 2016
    Assignee: Digital Solid State Propulsion LLC
    Inventor: Michael D. McPherson
  • Patent number: 8864923
    Abstract: A double base propellant modifier uses a combination of a lead component, a tin component and a copper component in physical contact to effect super-rate burning of double base propellants with defined plateau and mesa burning rate characteristics.
    Type: Grant
    Filed: January 30, 2006
    Date of Patent: October 21, 2014
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Stephen N. Stiles, Paul R. McCool
  • Patent number: 8828161
    Abstract: A double base propellant modifier uses a lead-tin component with a defined amount of lead and a copper component with a defined surface area to effect super-rate burning of double base propellants with defined plateau and mesa burning rate characteristics.
    Type: Grant
    Filed: January 30, 2006
    Date of Patent: September 9, 2014
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Stephen N. Stiles, Paul R. McCool
  • Patent number: 8613821
    Abstract: Provided is a basic metal nitrate suitable as an oxidizing agent for a gas generating agent, which is a basic metal nitrate having a good thermal stability and meeting at least one requirement of the following (a) to (d): (a) a particle diameter of 0.5 to 40 ?m; (b) a degree of crystallinity having 0.4 deg or less of a half band width of the peak in the X-ray analysis; (c) an initiation temperature of weight loss being 220° C. or higher according to TG-DTA analysis; and (d) an impurity content of 1,000 ppm or less based on Na atom. Further provided is a gas generating composition which has a low toxicity, a high burning rate and a low combustion temperature and which is used in a gas generator for an air bag. The gas generating composition comprises (a) tetrazole derivatives, guanidine derivatives or a mixture thereof, (b) a basic metal nitrate and (c) a binder and/or a slag-forming agent.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: December 24, 2013
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Xingxi Zhou, Kazuyuki Matsuoka, Jianzhou Wu, Yo Yamato, Takeshi Takahori, Kaoru Yamazaki
  • Patent number: 8147706
    Abstract: A low temperature flameless aerosol producing fire extinguishing composition containing potassium nitrate and binding fuel is characterized by using cellulose-fibrous mass as a binding fuel, with potassium nitrate at 30-70% and fibrous cellulose mass making up the remainder. A production method for the composition is further provided.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: April 3, 2012
    Assignee: ATOZ Design Labs Co., Limited
    Inventors: Zachary Joseph Zeliff, Liana Vladimirovna Loveless, Vladimir Victorovich Kutsel, Aleksander Ivanovich Doronichev
  • Patent number: 8147627
    Abstract: Ignition means for propellant powders include at least one oxidation means, at least one reduction means and at least one binder, and are free from primary explosives.
    Type: Grant
    Filed: January 10, 2006
    Date of Patent: April 3, 2012
    Inventors: Klaus Redecker, Ulrich Bley, Rainer Hagel
  • Publication number: 20100276042
    Abstract: A precursor composition of a reactive material that comprises a metal material and an energetic material, such as at least one oxidizer or at least one class 1.1 explosive. The metal material defines a continuous phase at a processing temperature of the precursor composition and the energetic material is dispersed therein. The metal material may be a fusible metal alloy having a melting point ranging from approximately 46° C. to approximately 250° C. The fusible metal alloy may include at least one metal selected from the group consisting of bismuth, lead, tin, cadmium, indium, mercury, antimony, copper, gold, silver, and zinc. The reactive composition may have a density of greater than approximately 2 g/cm3. The reactive composition may also include a polymer/plasticizer system.
    Type: Application
    Filed: January 5, 2007
    Publication date: November 4, 2010
    Applicant: ALLIANT TECHSYSTEMS INC.
    Inventors: Benjamin N. Ashcroft, Daniel B. Nielson, Daniel W. Doll
  • Publication number: 20100078098
    Abstract: To provide a gas generating composition for air bag which is low in toxicity, large in burning rate, and low in combustion temperature. Gas generating compositions comprising (a) melamine cyanurate or a mixture of melamine cyanurate and nitrogen-containing organic compound and (b) oxygen-containing oxidant, and gas generating compositions comprising (c) binder and (d) additive are provided.
    Type: Application
    Filed: April 22, 2009
    Publication date: April 1, 2010
    Applicant: DAICEL CHEMICAL INDUSTRIES, LTD.
    Inventors: Jianzhou WU, Shogo Tomiyama
  • Patent number: 7503987
    Abstract: There is provided a tubular molded article of a gas generating agent consisting of a non-azide-based composition. Both ends of the molded article are squashed. A gas-generating-agent producing process is to obtain a gas generating agent which is molded into the form of a tube both ends of which are squashed in such a way that the tubular molded article of the gas generating agent being in a wetted state is passed through a gap between a pair of molding gears that are rotatable so that each convex tooth of one of the molding gears can face that of the other molding gear, thereafter the molded article is squashed with the convex teeth at predetermined intervals, thereafter the molded article is cut off at the squashed concave parts in such a way as to be folded, and the resultant cut pieces are dried.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: March 17, 2009
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Tameo Kawakami, Eishi Sato, Koji Wakisaka, Kazuhisa Tamura
  • Patent number: 7335270
    Abstract: A stable, low-temperature ignition gas generating composition has a heating starting temperature of 170 to 220° C. The gas generating composition includes ammonium perchlorate, a chlorine scavenger, and microcrystalline carbon powder. The chlorine scavenger is sodium nitrate or aluminun/magnesium mixed powder, and the microcrystalline carbon powder is activated carbon or charcoal. The gas generating composition may include 40 to 58% by weight of ammonium perchlorate, 30 to 43% by weight of the chlorine scavenger, and 1 to 30% by weight of the microcrystalline carbon powder.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: February 26, 2008
    Assignee: NOF Corporation
    Inventors: Kazuya Serizawa, Katsuhiko Takahashi
  • Patent number: 6984275
    Abstract: The present invention comprises an additive to a propelling charge that greatly reduces barrel erosion when used in a gun system compared to the current additives noted above. The invention provides both a high nitrogen to carbon monoxide ratio in the combustion products of the propelling charge in conjunction with a reduced flame temperature which both work to reduce gun-barrel erosion.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: January 10, 2006
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Christine Marie Walsh, Christine Dianne Knott, Charles Stanley Leveritt
  • Patent number: 6881283
    Abstract: An explosive composition is provided that includes 85 to about 96 weight percent nitramine, based on the total composition weight, and about 4 to 15 weight percent plasticized binder. At least 80 weight percent of the total composition weight, and more preferably 85 to 96 weight percent of the total composition weight, comprises 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazatetracyclo[5.5.0.05,903,11]-dodecane (CL-20) particles having an average particle size not greater than 30 microns as the nitramine. Methods for preparing an explosive from the explosive composition are also provide.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: April 19, 2005
    Assignee: Alliant Techsystems Inc.
    Inventors: Kenneth E. Lee, Paul C. Braithwaite, Steve Nicolich, Mark Mezger
  • Patent number: 6875295
    Abstract: A gas generating material (140) for use in a vehicle occupant protection apparatus (10) comprises about 5% to about 20% by weight of the gas generating material, of a binder, 0 to about 50%, by weight of the gas generating material, of an energetic fuel, and an amount of oxidizer effective to oxygen balance the gas generating material. More than 50% by weight of the oxidizer is basic copper nitrate. The binder comprises at least about 20% by volume of the gas generating material.
    Type: Grant
    Filed: December 27, 2001
    Date of Patent: April 5, 2005
    Assignee: TRW Inc.
    Inventors: Harold R. Blomquist, Abdelkader M. Helmy, William P. Sampson, Michael G. Mangum
  • Patent number: 6811626
    Abstract: A gas-generating composition is provided resistant to temperature changes between −40° C. and 100° C., repeated 200 times. The gas-generating composition includes a nitrogen compound stabilizer having nitrogen atom with an unpaired electron. The gas-generating composition is stabilized by the stabilizer by improving the adhesiveness between the organic binder and ammonium nitrate.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: November 2, 2004
    Assignee: NOF Corporation
    Inventors: Kazuya Serizawa, Katsuhiko Takahashi
  • Patent number: 6783615
    Abstract: An insensitive high energy explosive is disclosed which can be processed on high speed loading equipment without significant buildup of explosive material on the tooling of the high speed loading equipment. The insensitive high energy explosive comprises (a) from about eighty to about ninety-six percent (80.0 to 96.0%) by weight of a high energy explosive chosen from the group comprising cyclotetramethylene tetranitramine (HMX), cyclotrimethylylene trinitramine (RDX), or hexanitrohexaazaisowurtzitane (CL-20); (b) from about two and four-tenths to about twelve percent (2.4 to 12.0%) by weight of an energetic plasticizer, preferably a 1:1 mixture of BIS 2,2-Dintropropylacetate and BIS 2,2-Dinitropropyl formal (BDNPA/F); (c) from about one and six-tenths to about eight percent (1.6 to 8.0%) by weight CAB binder system; and, (d) about one half of one percent (0.5%) fluorocarbon additive, preferable a Teflon-type additive commercially available under the Trade name Zonyl® MP 1100.
    Type: Grant
    Filed: January 29, 2003
    Date of Patent: August 31, 2004
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Keith Van Biert, Donald A. Geiss, Jr.
  • Patent number: 6689236
    Abstract: A binder matrix suitable for use in a gas generant composition, a gas generant composition including the binder matrix, and a related method of igniting such a gas generant composition are provided. The binder matrix includes a non-energetic binder material and dimethyl malonate non-energetic plasticizer and has a softening temperature above at least about 125° C. A gas generant composition including the binder matrix includes a non-energetic binder material such as cellulose acetate, dimethyl malonate non-energetic plasticizer, a fuel such as a nitramine fuel such as RDX, HMX or a combination thereof, and a stabilizer such as N-methyl-p-nitroaniline.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: February 10, 2004
    Assignee: Autoliv ASP, Inc.
    Inventors: Robert D. Taylor, Gregory B. Hess, Gary L. Smith
  • Publication number: 20030097953
    Abstract: Disclosed is a gas generating composition being stable and having a heating starting temperature of 170 to 220° C., which is of a low-temperature ignition type. The gas generating composition comprises ammonium perchlorate, a chlorine scavenger, and microcrystalline carbon powder. The chlorine scavenger is sodium nitrate or aluminum/magnesium mixed powder, and the microcrystalline carbon powder is activated carbon or charcoal. The gas generating composition preferably comprises 40 to 58% by weight of ammonium perchlorate, 30 to 41% by weight of the chlorine scavenger, and 1 to 30% by weight of the microcrystalline carbon powder.
    Type: Application
    Filed: October 22, 2002
    Publication date: May 29, 2003
    Inventors: Kazuya Serizawa, Katsuhiko Takahashi
  • Publication number: 20030094224
    Abstract: An explosive composition is provided that includes 85 to about 96 weight percent nitramine based on the total composition weight, and about 4 to 15 weight percent plasticized binder. At least 80 weight percent of the total composition weight, and more preferably 85 to 96 weight percent of the total composition weight, comprises 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazatetracyclo[5.5.0.05,903,11]-dodecane (CL-20) particles having an average particle size not greater than 30 microns as the nitramine. Methods for preparing an explosive from the explosive composition are also provided.
    Type: Application
    Filed: July 31, 2002
    Publication date: May 22, 2003
    Inventors: Kenneth E. Lee, Paul C. Braithwaite, Steve Nicolich, Mark Mezger
  • Patent number: 6562160
    Abstract: The present invention is a propellant used to inflate an airbag in vehicle safety systems comprising from about 70 weight percent to about 82 weight percent Cyclotrimethylenetrinitramine (RDX), from about 10 weight percent to about 15 weight percent of a polymer binder, from about 6 weight percent to about 9 weight percent of an inert plasticizer, from about 2 weight percent to about 4 weight percent of Hydroxypropyl Cellulose, from about 0.5 weight percent to about 1 weight percent of a polymeric processing aid; and, from about 0.3 weight percent to about 0.5 weight percent of a material that acts as a stabilizer and anti-oxidant. The present invention is designed to have a long shelf life, high resistance to performance degradation after thermal aging testing and excellent physical properties such as excellent strength, insensitivity, and safety.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: May 13, 2003
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Christine M. Walsh
  • Patent number: 6558487
    Abstract: A smoke generating composition including at least one smoke generating material and an effective amount of a polymerized monosaccharide or disaccharide as a binder. The polymerized monosaccharide or disaccharide serves the dual purpose of being both a binder and a fuel to provide a more efficient and safer smoke generating composition.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: May 6, 2003
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Raef M. Tadros
  • Publication number: 20030034103
    Abstract: The present invention describes ignition means for propellant powders. The inventive means are characterized in that said means are free from primary explosives and contain at least one oxidation means, at least one reduction means and at least one binding agent. The invention also relates to the use of said ignition means and to covering foils for propellant powders that are coated with the inventive ignition means.
    Type: Application
    Filed: August 26, 2002
    Publication date: February 20, 2003
    Inventors: Klaus Kedecker, Ulrich Bley, Rainer Hagel
  • Publication number: 20030024618
    Abstract: A gas generating composition for an air bag having a low toxicity, a high burning rate and a low combustion temperature is provided.
    Type: Application
    Filed: July 22, 2002
    Publication date: February 6, 2003
    Inventors: Jianzhou Wu, Yo Yamato
  • Publication number: 20020144759
    Abstract: The present invention is a propellant used to inflate an airbag in vehicle safety systems comprising from about 70 weight percent to about 82 weight percent Cyclotrimethylenetrinitramine (RDX), from about 10 weight percent to about 15 weight percent of a polymer binder, from about 6 weight percent to about 9 weight percent of an inert plasticizer, from about 2 weight percent to about 4 weight percent of Hydroxypropyl Cellulose, from about 0.5 weight percent to about 1 weight percent of a polymeric processing aid; and, from about 0.3 weight percent to about 0.5 weight percent of a material that acts as a stabilizer and anti-oxidant. The present invention is designed to have a long shelf life, high resistance to performance degradation after thermal aging testing and excellent physical properties such as excellent strength, insensitivity, and safety.
    Type: Application
    Filed: April 10, 2001
    Publication date: October 10, 2002
    Inventor: Christine M. Walsh
  • Patent number: 6368431
    Abstract: An apparatus (2) for inflating an air bag (4) including a container (12) and a combustible material (20) disposed in the container. The combustible material (20) comprises a binder selected from the group consisting of cellulose acetate butyrate and cellulose acetate propionate. The binder has a melting point in the range of about 230° C. to about 260° C. An igniter (32) ignites the combustible material (20) to generate combustion products. A conduit directs the combustion products towards the air bag (4).
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: April 9, 2002
    Assignee: TRW Inc.
    Inventors: Michael G. Mangum, David C. Ouart
  • Patent number: 6315930
    Abstract: A method for making a propellant composition that results in a desirable gas output when combusted. The propellant can be part of an inflator used in a vehicle for inflating an air bag. The propellant has a relatively low burn rate exponent of no greater than about 0.7. The propellant is substantially dense, with the propellant having a density that is at least 85% of theoretical density. In making the propellant, its density can be reduced using a roller mill that flattens the propellant to a controlled thickness. The propellant preferably includes phase-stabilized ammonium nitrate and fibrous cellulose.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: November 13, 2001
    Assignee: Autoliv ASP, Inc.
    Inventor: Brian K. Hamilton
  • Publication number: 20010017175
    Abstract: An apparatus (2) for inflating an air bag (4) including a container (12) and a combustible material (20) disposed in the container. The combustible material (20) comprises a binder selected from the group consisting of cellulose acetate butyrate and cellulose acetate propionate. The binder has a melting point in the range of about 230° C. to about 260° C. An igniter (32) ignites the combustible material (20) to generate combustion products. A conduit directs the combustion products towards the air bag (4).
    Type: Application
    Filed: November 12, 1997
    Publication date: August 30, 2001
    Inventors: MICHAEL G. MANGUM, DAVID C. OUART
  • Patent number: 6235132
    Abstract: A pyrotechnic material comprising at least one fuel and an oxidizer of ceric ammonium nitrate or a mixture of ceric ammonium nitrate and one or more other oxidizers, and, optionally, sub-micron (i.e., having an average particle size of less than about 1 &mgr;m) fumed silica for use as a low-solids gas generating composition. When the oxidizer-fuel mixture is within about 4 percent of stoichiometric balance, the pyrotechnic material provides a low solids gas generant less than about 30 percent solids on combustion, and may be formed as pressed pellets, grains, or granules for use in automotive passive restraint systems.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: May 22, 2001
    Assignee: Talley Defense Systems, Inc.
    Inventors: Gregory D. Knowlton, Christopher P. Ludwig
  • Patent number: 6214137
    Abstract: High performance explosive compositions and ordnances using the explosive compositions as an explosive ingredient for high performance, low sensitivity explosive applications are disclosed. The explosive formulation includes CL-20 as an explosive ingredient, and a binder system including cellulose acetate butyrate as a non-energetic binder and bis-dinitropropyl acetal and bis-dinitropropyl formal as an energetic plasticizer. The CL-20 may be present in the explosive formulation in a concentration of from about 85 wt % to about 96 wt %. The formulation is preferably sufficiently pressable and/or extrudable to permit it to be formed into grains suitable for ordnance and similar applications, including use as grenades, land mines, missile warheads, and demolition explosives.
    Type: Grant
    Filed: October 6, 1998
    Date of Patent: April 10, 2001
    Assignee: Cordant Technologies Inc.
    Inventors: Kenneth E. Lee, Robert L. Hatch, Mark Mezger, Steve Nicolich
  • Patent number: 6206988
    Abstract: Hexanitrohexaazaisowurtzitane-containing compositions which comprise hexanitrohexaazaisowurtzitane, polynitropolyacetylhexaazaisowurtzitanes and one or more of oxaisowurtzitane compounds represented by the specified formulae. The explosive compositions which contain the hexanitrohexaazaisowurtzitane-containing compositions have improved handling safety by lowering their sensitivity without degrading combustibility and detonability.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: March 27, 2001
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventor: Hakobu Bazaki