Stable suspensions
阅读：146发布：2023-09-04
专利汇可以提供Stable suspensions专利检索，专利查询，专利分析的服务。并且Stable suspensions useful as high energy propellant and agricultural compositions comprising a finely-divided vehicleinsoluble organic or inorganic powder, 0.2 to 3.0 percent vehicle-insoluble microfibers and a liquid vehicle which is either a liquid hydrocarbon or a hydrocarbon soluble polar hydrocarbon derivative such as an amine, amide, ketone, alcohol, etc. The microfibers are either inorganic microfibers having an average particle between 0.01 and 2.0 microns or organic microfibers having an average fiber diameter between 1 and 20 microns. A typical stable suspension comprises 68.72 percent aluminum powder, 1.43 percent diethyl stearyl amide, 0.75 percent glass microfibers having an average fiber diameter of 0.05 to 0.2 microns and 29.1 percent kerosene. This stable suspension useful as a propellant was prepared by blending glass microfibers into the kerosene fraction to form a soft gel and separately blending the aluminum powder with distearyl amide; the aluminum-amide mixture is then slowly added to the glass fiber-kerosene gel until a buttery suspension is formed.，下面是Stable suspensions专利的具体信息内容。
2. A stable suspension as described in claim 1 in which said microfibers are employed in a concentration between 0.4 and 2.5 weight percent.
3. A stable suspension as described in claim 1 in which inorganic microfibers are selected from the group consisting of asbestos, glass and silica fibers.
4. A stable suspension as described in claim 1 in which organic microfibers are selected from the group consisting of cellulose fibers, nitro-cellulose fibers, carboxylated cellulose fibers, aminoethyl cellulose fibers, cellulose phosphate fibers, carboxymethyl cellulose fibers, poly-halogenated olefin polymer fibers, polypropylene fibers, polyvinyl alcohol fibers and polyvinylacetate fibers.
5. A stable suspension as described in claim 1 wherein said finely-divided powder has an average pArticle size less than 100 mesh.
6. A stable suspension according to claim 1 in which said vehicle is a liquid hydrocarbon fraction boiling above 150* F.
7. A stable suspension consisting essentially of 25-90 weight percent of a vehicle-insoluble powder selected from the group consisting of metals, metalloids, metal and metalloid compounds, 1-naphthyl-N-methyl-carbamate, 3-(2-(3,5-dimethyl-2-oxycyclo-hexyl)-2-hydroxyethyl) glutarimide, N-trichloromethyl mercapto-4-cyclohexene-1,2-dicarboximide and tetramethyl thiuram disulfide having a particle size less than 100 mesh, 0.2 to 3.0 weight percent vehicle-insoluble microdimensional fibers selected from the group consisting of inorganic microfibers having an average particle diameter between 0.01 and 2.0 microns and organic microfibers having an average fiber diameter between 1 and 20 microns and 5-75 weight percent of a liquid hydrocarbon vehicle, said vehicle containing 0.2 to 20 percent of a texture improving agent, which is a hydrocarbon-soluble polar hydrocarbon derivative containing at least 12 carbon atoms and at least one radical selected from the group consisting of amino, hydroxy, carbonyl, amide, imide, carboxylic and ester radicals.
8. A stable suspension according to claim 7 in which said texture improving agent is present in a concentration between 1 to 10 weight percent of said vehicle.
9. A stable suspended propellant consisting essentially of 50-90 weight percent of a vehicle-insoluble powder selected from the group consisting of aluminum, boron, carbon, boron carbide, beryllium and mixtures thereof, said powder having an average particle size less than 20 mesh, 0.2 to 3.0 weight percent vehicle-insoluble microdimensional fibers selected from the group consisting of inorganic microfibers having an average particle diameter between 0.01 and 2.0 microns and organic microfibers having an average fiber diameter between 1 and 20 microns and 10-50 weight percent of a liquid vehicle selected from the group consisting of liquid hydrocarbons, a hydrocarbon-soluble polar hydrocarbon derivative containing at least one radical selected from the group consisting of amino, hydroxy, carbonyl, amide, imide, carboxylic and ester radicals and mixtures of hydrocarbons and said hydrocarbon derivatives.
10. A stable suspended propellant as described in claim 9 in which said microdimensional fibers are inorganic microfibers having an average fiber diameter between 0.01 and 0.5 micron.
11. A stable suspended propellant as described in claim 9 in which said microfibers are organic microfibers having an average fiber diameter between 1 and 20 microns.
12. A stable suspended propellant as described in claim 9 in which said vehicle is a hydrocarbon fraction boiling between 300* and 750* F. and contains 1-10 weight per cent of a fatty acid derivative containing more than 16 carbon atoms as a texture improving agent.
13. A process for preparing stable suspensions of hydrocarbon-insoluble powders which comprises thickening a liquid vehicle selected from the group consisting of liquid hydrocarbons, hydrocarbon-soluble polar hydrocarbon derivatives substituted with at least one radical selected from the group consisting of amino, hydroxyl, carbonyl, amide, imide, carboxyl and ester radicals and mixtures of hydrocarbons and said hydrocarbon derivatives with hydrocarbon-insoluble microdimensional fibers selected from the group consisting of inorganic microfibers having an average particle diameter between 0.01 and 2.0 microns and organic microfibers having an average fiber diameter between 1 and 20 microns and adding with mixing a hydrocarbon-insoluble powder selected from the group consisting of metals, metalloids, metal and Metalloid compounds, 1-naphthyl-N-methyl-carbamate, 3-(2-(3,5-dimethyl-2-oxycyclo-hexyl)-2-hydroxyethyl) glutarimide, N-trichloro-methyl mercapto-4-cyclohexene-1,2-dicarboximide and tetramethyl thiuram disulfide having a particle size less than 20 mesh to said fiber-thickened vehicle to form a stable suspension consisting essentially of 3-90 weight per cent powder, 0.2-3.0 weight per cent microdimensional fibers and 5-97 weight per cent liquid vehicle.
14. A process according to claim 13 in which said powder has an average particle size less than 100 mesh and said fibers are inorganic microfibers having an average fiber diameter between 0.01 and 0.5 micron.
15. A process according to claim 13 in which said powder has an average particle size less than 100 mesh and said fibers are organic microfibers having an average fiber diameter between 1 and 20 microns.
16. A suspended propellant comprising 50-90 percent aluminum powder of 200-325 mesh, 0.2-3.0 weight percent glass microfibers having an average fiber diameter between 0.01 and 0.5 micron, 10-50 weight percent kerosene and 1-10 weight percent of a fatty acid amide containing at least 16 carbon atoms.
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