Suntech, Inc.

Sun Oil Company of Pennsylvania

Edward M Kohn

Robert M Thompson

William D Vanderwerff

Stephen L Nickol

A novel composition comprises a block copolymer of a polyetheramide, e.g., poly-(4,7-dioxadecamethylene adipamide) and a random copolymer resulting from the polymerization of an ether free polyamide precursor, e.g., hexamethylenediamine salt of adipic acid and a precursor of a polyetheramide. The block copolymer can be more easily processed into useful articles such as fiber and film because it differs structurally from a corresponding block copolymer of homopolymers of polyetheramide and polyamide.

Block copolymer of polyetheramide and random copolymer of polyamide and

Coal-oil slurries are stabilized by incorporation of a mixture comprised of a coal tar or pitch and a grease made from an aluminum based complex soap.

Stabilized coal-oil slurry and process

Coal-oil slurries are stabilized by incorporation of a mixture comprised of a hydrogenated coal liquid and a grease made from an aluminum based complex soap.

Suitable pitch is formed into a filament continuously and upward by various means located at the bottom of a vessel containing a hot buoyant liquid. The liquid buoys up the fragile filament as it ascends the vessel from a lower region held at one temperature to an upper region where the temperature is about 450.degree.-700.degree.C. The filament emerges upward out of the liquid to move further through a still higher temperature (&gt;900.degree.C) zone which upon leaving the previously formed pitch is a carbon filament. The liquid can be a blend of suitable molten inorganic salts or a molten inorganic oxide.

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Philadelphia, PA, United States of America

Edward M Kohn