초록 ▼

A manufacturing process and composition is claimed for a composition of matter comprising sodium carbonate, sodium carbonate perhydrate, a fluorescent whitening agent and a diphosphonic acid. The process comprises incorporating the fluorescent whitening agent and diphosphonic acid into aqueous hydro

A manufacturing process and composition is claimed for a composition of matter comprising sodium carbonate, sodium carbonate perhydrate, a fluorescent whitening agent and a diphosphonic acid. The process comprises incorporating the fluorescent whitening agent and diphosphonic acid into aqueous hydrogen peroxide, uniformly applying the hydrogen peroxide solution to particulate sodium carbonate to form a reaction mixture, urging water vapor from the surface of the reaction mixture and maintaining the temperature of the reaction mixture between about 35°C. and 80°C.

대표청구항 ▼

A stabilized soda ash peroxygen carrier composition comprising a plurality of particles, substantially all of which particles comprise sodium carbonate perhydrate, an effective amount of a bis(styryl)aromatic fluorescent whitening agent to provide 0.1% to 5% by weight in a formulation and 0.1% to ab

A stabilized soda ash peroxygen carrier composition comprising a plurality of particles, substantially all of which particles comprise sodium carbonate perhydrate, an effective amount of a bis(styryl)aromatic fluorescent whitening agent to provide 0.1% to 5% by weight in a formulation and 0.1% to about 3% by weight of a diphosphonic acid or salt having a formula of [Figure] wherein Y is hydrogen or hydroxyl, R is hydrogen or an aliphatic hydrocarbon group having one to six carbons, sufficient sodium carbonate being present in the composition to provide between 1 and 5 moles of sodium carbonate for each mole of available water in the composition, said available water including water chemically available as hydrogen peroxide, water of crystallization of sodium carbonate hydrates and free water which may temporarily exist in the composition.