Abstract: A new anode material consisting essentially of from about 50 weight percent o about 90 weight percent of lithium and from about 50 weight percent to about 10 weight percent of boron, and current generating electrochemical cells utilizing said anode material.
Type:
Grant
Filed:
September 24, 1976
Date of Patent:
July 24, 1979
Assignee:
The United States of America as represented by the Secretary of the Navy
Abstract: Marine structures which are designed to be submerged in an aqueous environt containing fouling organism are protected from fouling by the use of an organotin containing polymer wherein the tin is chemically bonded to the polymer. The polymer inhibits fouling of the exposed surface of the structure while minimizing the adverse effects on the surrounding environment due to reduced leaching of the organotin compound from the polymer.
Type:
Grant
Filed:
June 24, 1976
Date of Patent:
February 21, 1978
Assignee:
The United States of America as represented by the Secretary of the Navy
Inventors:
Edward J. Dyckman, Deborah M. Andersen, Eugene C. Fischer
Abstract: Hydrolyzable, non-aromatic, nitroso- or nitro-substituted explosive compos are removed from water by adsorption of the explosive on a strongly basic anion exchange resin, and by chemical interaction of the adsorbed explosive with the anion exchange resin to produce relatively non-toxic products.
Type:
Grant
Filed:
January 15, 1976
Date of Patent:
April 19, 1977
Assignee:
The United States of America as represented by the Secretary of the Navy
Inventors:
John C. Hoffsommer, Lloyd A. Kaplan, Donald A. Kubose, Donald J. Glover
Abstract: Hydroxyalkyl starch having utility as a cryoprotective agent for human errocytes and as a plasma volume expander is prepared by the steps of subjecting a waxy starch to acid hydrolysis at a temperature below the gelatinization temperature of the starch to effect a molecular size reduction while substantially retaining the granular form of the starch, reacting the hydrolyzed starch with a reducing agent under reaction conditions which prevent the dissolution of the granular starch, suspending the stabilized, hydrolyzed starch in a liquid medium comprising a water-miscible organic solvent, in which medium the hydrolyzed starch is substantially insoluble, reacting the stabilized, hydrolyzed starch in suspension with a starch hydroxyalkylating agent under basic pH conditions until a hydroxyalkylated starch having a molecular substitution within the range from about 0.3 to 0.9 is obtained. The granular form of the starch is retained throughout the process.
Type:
Grant
Filed:
October 6, 1975
Date of Patent:
April 5, 1977
Assignee:
The United States of America as represented by the Secretary of the Navy
Abstract: Increasing the critical pressure of composite propellants by admixing into he propellant composition an additive selected from the group consisting of (1) oxides of Group II metals, titanium, aluminum, boron, zirconium, and lead; (2) nitrides of Group II metals, aluminum, and boron; (3) carboxylates, formates, and sulfates of Group II metals, aluminum, calcium, and magnesium; (4) hydrates of the carboxylates, formates, and sulfates of Group II metals, aluminum, calcium, and magnesium; (5) the following fibrous materials, asbestos, quartz, carbon, and boron; (6) the following metal: Group II metals and boron; and (7) mixtures thereof.
Type:
Grant
Filed:
April 12, 1974
Date of Patent:
October 19, 1976
Assignee:
The United States of America as represented by the Secretary of the Navy
Abstract: High density solid propellants are prepared by a process which comprises mixing the solid propellant components comprising a perfluorinated polymer, such as high molecular weight polytetrafluorethylene, and an inorganic oxidizer salt, such as NF.sub.4 BF.sub.4, with a dispersion containing a dissolved low molecular weight perfluorinated polymer, a suspended low molecular weight pefluorinated polymer and a suitable solvent, removing the solvent from the mixture, and drying the solids.
Type:
Grant
Filed:
September 9, 1975
Date of Patent:
September 21, 1976
Assignee:
The United States of America as represented by the Secretary of the Navy
Abstract: A pyrotechnically activated lithium-chlorine cell possessing high voltage, igh energy density and a high rate of discharge is composed of a porous graphite gas diffuser, a fused alkali metal salt electrolyte, a lithium anode in contact with the electrolyte, and a cartridge containing a pyrotechnic material disposed within the anode, all of the components being stacked inside a container that serves as the cell case. The porous gas diffuser is positioned within the cell case to provide a gas receiving chamber. Chlorine is introduced into the gas receiving chamber as the pyrotechnic material is ignited to activate the cell.
Type:
Grant
Filed:
June 25, 1975
Date of Patent:
August 3, 1976
Assignee:
The United States of America as represented by the Secretary of the Navy
Inventors:
Frederic M. Bowers, Judith H. Ambrus, George S. Briggs, Michael E. DeGraba, Gary L. Green, Allan S. Kushner, Donald L. Warburton
Abstract: Fully dense ceramic articles are prepared by mixing powders of silicon nide, aluminum oxide and magnesium oxide to form a composite powder composition wherein the magnesium oxide acts as a sintering aid, forming the composite powder into a desired shape, and heating the shaped composite powder composition in the absence of applied pressure at a temperature sufficient to effect sintering of the composition.
Type:
Grant
Filed:
April 22, 1975
Date of Patent:
April 27, 1976
Assignee:
The United States of America as represented by the Secretary of the Navy