Silicate-containing powders providing controlled, sustained gas release
AssigneesBernard Technologies, Inc., Southwest Research Institute
InventorsStephen T. Wellinghoff, Joel J. Kampa, Sumner A. Barenberg, Peter N. Gray, Michael D. Lelah
Life of this patent
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Abstract
A particle including anions dispersed throughout an amorohous, paracrystalline or crystalline solid solution, the anions being capable of reacting with hydronioum ions to generated a gas. The particle can be incorporated into a power capable of generating and releasing a gas after hydrolysis of an acid releasing agent.
Claims138
A particle comprising anions dissolved in an amorphous, paracrystalline or crystalline solid solution, the anions being capable of reacting with hydronioum ions to generate a gas.
Silicate particles prepared by a process comprising the steps of admixing a silicate, a solvent, and a chlorite, bisulfite, sulfite, sulfide, hydrosulfide, nitrite, hypochlorite, or cyanide salt to form a solution, and forming silicate particles containing an amorphous, paracrystalline or crystalline solid solution from the solution.
A silicate particle comprising anions dispersed throughout substantially amorphous silicate, the anions being capable of reacting with hydronioum ions to generate a gas.
A process for preparing particles comprising the steps of admixing an amorphous, paracrystalline or crystalline material, a solvent, and a chlorite, bisulfite, sulfite, sulfide, hydrosulfide, nitrite, hypochlorite, or cyanide salt to form a solution, and forming particles containing an amorphous, paracrystalline or crystalline solid solution from the solution.
A process for preparing silicate particles comprising the steps of admixing a silicate, a solvent, and a chlorite, bisulfite, sulfite, sulfide, hydrosulfide, nitrite, hypochlorite, or cyanide salt to form a solution, and forming substantially amorphous silicate particles from the solution.
A powder for sustained release of a gas comprising:
- anions dissolved in an amorphous, paracrystalline or crystalline solid solution, the anions being capable of reacting with hydronioum ions to generate a gas;
- and
- an acid releasing agent, the powder being substantially free of water and capable of generating and releasing a gas after hydrolysis of the acid releasing agent.
A powder for sustained release of a gas comprising:
- an interpenetrating network containing a silicate, anions that are capable of reacting with hydronioum ions to generate a gas, and an acid releasing agent;
- the powder being substantially free of water and capable of generating and releasing a gas after hydrolysis of the acid releasing agent.
A powder for sustained release of a gas comprising:
- a core containing a silicate and anions that are capable of reacting with hydronioum ions to generate a gas;
- and
- a first layer containing an acid releasing agent;
- and
- a second layer between the core and the first layer, the second layer containing a silicate;
- the core and the first and second layers being substantially free of water, the second layer being substantially water-insoluble, and the core being capable of generating and releasing a gas after hydrolysis of the acid releasing agent.
A powder for sustained release of a gas comprising:
- a core containing a silicate and anions that are capable of reacting with hydronioum ions to generate a gas;
- and
- a layer on the outer surface of the core, the layer containing an acid releasing agent and a silicate;
- the core and the layer being substantially free of water, the layer being substantially water-insoluble, and the core being capable of generating and releasing a gas after hydrolysis of the acid releasing agent.
A process for preparing a powder providing sustained release of a gas, the process comprising:
- admixing particles containing a silicate and anions that are capable of reacting with hydronioum ions to generate a gas with a solvent to form a slurry;
- admixing a zinc, magnesium, calcium, aluminum or other monovalent, divalent or multivalent salt and an acid releasing agent with the slurry to form a solids-containing suspension;
- and forming a powder from the solids-containing suspension, the powder being substantially free of water and capable of generating and releasing the gas after hydrolysis of the acid releasing agent.
A process for preparing a powder providing sustained release of a gas, the process comprising admixing a zinc, magnesium, calcium, aluminum or other monovalent, divalent or multivalent salt, an acid releasing agent, and particles containing a silicate and anions that are capable of reacting with hydronioum ions to generate a gas with a solvent to form a solids-containing suspension, and forming a powder from the solids-containing suspension, the powder being substantially free of water and capable of generating and releasing the gas after hydrolysis of the acid releasing agent.
A process for preparing a powder providing sustained release of a gas, the process comprising admixing a silicate, a solvent, an acid releasing agent, and a chlorite, bisulfite, sulfite, sulfide, bicarbonate, carbonate, hydrosulfide, nitrite, hypochlorite, or cyanide salt to form a solution;
- and forming the powder from the solution.
Dependencies are inferred from the claim text.