Hydrocarbon polymers
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorMartin H. Kaufman
Life of this patent
Estimating the term…
Abstract
A technique for improving the tensile strength of extruded fibers by incorating Teflon into hydrocarbon polymers. These polymeric compositions have extensive application in improving the physical behavior, reliability, and long term storage stability of extruded propellants, pyrotechnics and explosives.
Claims4
A method of compounding an elastomeric polymeric composition which comprises
- dissolving an elastomeric polymer selected from the group consisting of butadiene-acrylonitrile rubber, ethylene-propylene rubber, butyl rubber, styrene-butadiene rubber, polyisoprene rubber, polychloroprene rubber, in a solvent selected from the group consisting of benzene, toluene, xylene, hexane, cyclohexane, petroleum ether to form a solution;
- incorporating into said solution polytetrafluoroethylene to form a suspension;
- coprecipitating said polymer and said polytetrafluoroethylene by mixing said suspension with a nonsolvent for said polymer whereby a precipitate forms;
- separating said precipitate from said solvent and drying said precipitate.
An elastomeric polymeric composition consisting essentially of an elastomeric polymer selected from the group consisting of butadiene-acrylonitrile, ethylene-propylene rubber, styrene-butadiene rubber, polyisoprene, polychloroprene, butyl rubber and a polytetrafluoroethylene.
Dependencies are inferred from the claim text.