Hughes Aircraft Company

Robert K Jenkins

Leon B Keller

Gary Luster

Boyce G Kimmel

L Brian Keller

John H Cover, Jr

Polymeric fibers are formed from solution by the influence of polymeric seeding materials under conditions of simultaneous cooling and agitation.

Formation of polymeric fibers by a seeding technique

We have prepared a new class of polymeric fibers and masses which are produced by precipitation from solutions of the polymer. The fibers and fiber masses have novel and useful characteristics. A fiber mass of this invention is a coherent, three-dimensional network of interconnected crystalline polymeric fibers and fiber bundles randomly arrayed in all directions. The fibers are smaller in diameter than can be consistently produced by conventional fiber drawing and spinning techniques. The novel fiber masses are produced from solutions of fiber-forming linear organic polymers having regularly repeated chain structures. The polymers are precipitated from these solutions by simultaneously cooling and agitating the polymer solution at vibrations in the sonic frequency range. The fiber masses may then be removed from the solvent or, in the case of a polymerizable solvent, a composite may be formed.

Polymeric fiber masses, fibers therefrom, and processes for producing

Process for producing novel polymeric fibers and fiber masses

A new system of epoxy resins and curing agents is disclosed which may be cured at low temperatures to yield polymeric materials capable of providing excellent binders for filled systems. The new combination exhibits a useful pot life, and cures at low temperatures to form a tough, dimensionally stable polymer.

Low temperature curing resin system

A mesh article, such as a reflector for radio frequencies, comprises glassy base fibers of high tensile strength, low elongation properties and low coefficient of expansion, the fibers being coated with a thin layer of metal. In a typical embodiment, the fibers are quartz coated with aluminum. The fibers are not interwoven and are bonded together at their intersections and to a peripheral ring support. These articles are lightweight, flexible and foldable and possess a 'shape memory.'

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Huntington Beach, CA, United States of America

Robert K Jenkins