HIGH STRENGTH FLUOROSILICONE SEALANTS
The method of this invention produces a high strength, one-part fluorosilicone sealant which is stable in the absence of moisture and contains an in situ treated reinforcing silica filler. The fluorosilicone sealant is produced by a process which in situ treats the reinforcing filler with a di(trifl...
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| creator | MAXSON, MYRON TIMOTHY |
| description | The method of this invention produces a high strength, one-part fluorosilicone sealant which is stable in the absence of moisture and contains an in situ treated reinforcing silica filler. The fluorosilicone sealant is produced by a process which in situ treats the reinforcing filler with a di(trifluoropropyl)tetramethyldisilazane in the presence of a portion of the fluorosilicone polymer. The remainder of the polymer is then added and the reinforced polymer is admixed with a moisture activated curing system to give a sealant which cures upon exposure to moisture to give an elastomer. The sealant is easily extrudable from a storage container. The cured elastomer has improved tensile strength, tear strength and elongation values. The cured elastomer, being a fluorosilicone, is resistant to non-polar organic hydrocarbon fluids such as aircraft jet engine fuels and gasoline. |
| format | Patent |
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The fluorosilicone sealant is produced by a process which in situ treats the reinforcing filler with a di(trifluoropropyl)tetramethyldisilazane in the presence of a portion of the fluorosilicone polymer. The remainder of the polymer is then added and the reinforced polymer is admixed with a moisture activated curing system to give a sealant which cures upon exposure to moisture to give an elastomer. The sealant is easily extrudable from a storage container. The cured elastomer has improved tensile strength, tear strength and elongation values. 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The fluorosilicone sealant is produced by a process which in situ treats the reinforcing filler with a di(trifluoropropyl)tetramethyldisilazane in the presence of a portion of the fluorosilicone polymer. The remainder of the polymer is then added and the reinforced polymer is admixed with a moisture activated curing system to give a sealant which cures upon exposure to moisture to give an elastomer. The sealant is easily extrudable from a storage container. The cured elastomer has improved tensile strength, tear strength and elongation values. The cured elastomer, being a fluorosilicone, is resistant to non-polar organic hydrocarbon fluids such as aircraft jet engine fuels and gasoline.</abstract><edition>4</edition><oa>free_for_read</oa></addata></record> |
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| subjects | ADHESIVES AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DYES GENERAL PROCESSES OF COMPOUNDING MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING-UP |
| title | HIGH STRENGTH FLUOROSILICONE SEALANTS |
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