Carus Corporation

Edward S Rogers

Arno H Reidies

Ernest M Eissele

Mark A Herbstrith

Kenneth C Scott

A layered composition which includes a hardened core comprising at least about 50 weight percent permanganate which composition releases permanganate ion into an aqueous media over time is described. A method of making and using the composition of the invention also are described.

Layered cementitous composition which time releases permanganate ion

Permanganate-containing pellets for gradual release or permanganate comprise an integrated body of a hydratable, self-curing cement in cured, hydrated form, and finely-divided particles of a water-soluble permanganate salt in substantially uniform distribution therein. The pellets are formed from a mixture of the permanganate salt, hydratable self-curing mineral cement, and water.

Permanganate-containing pellets and method of manufacture

A method is provided for selectively bleaching dyed, bleachable cotton garments. The garments are tumbled in damp condition with reuseable pre-formed solid pellets of limited porosity having abradable surfaces. The pellets comprise substantially water-insoluble cemented aggregates of mineral particles with a finely-divided particulate bleaching aent imbedded therein. The bleaching agent, which preferably is substantially uniformly distributed in the pellets, bleaches the garments by surfaces of the pellets wearing away during the garment tumbling to release the bleaching agent as the pellets contact the garments.

Method of bleaching dyed cotton garments

Self-ignition of low rank coal is inhibited by application of a permanganate salt, such as potassium permanganate, together with a phosphorus compound, such as a phosphoric or polyphosphoric acid. The inhibitors are applied in aqueous solution following drying of the particulate coal. The combination treatment is much more effective than the use of a permanganate salt alone.

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Princeton, IL, United States of America

Edward S Rogers