Process for granulating perborate monohydrate
AssigneeHenkel Kommanditgesellschaft auf Aktien
InventorsVolker Bauer, Wilfried Raehse, Klaus Koester, Jochen Jacobs
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Abstract
The process of preparing granules of sodium perborate monohydrate having an increased density by dry-compacting a mixture of sodium perborate monohydrate and from about 0.2 to about 30% by weight of a compacting aid, based on the weight of the mixture. The compacting aid is selected from the group consisting of an alkali metal salt, alkaline earth metal salt, carbohydrate, anionic surfactant, and nonionic surfactant. After forming a compactate of the mixture, the compactate is size-reduced to obtain granules having the desired particle size.
Claims17
The process of granulating sodium perborate monohydrate, comprising dry-compacting a mixture of sodium perborate monohydrate and a compacting aid selected from the group consisting of an alkali metal salt, alkaline earth metal salt, carbohydrate, anionic surfactant, and nonionic surfactant, and size-reducing the compactate formed to the desired particle size.
The process of preparing granules of sodium perborate monohydrate having an increased density, comprising dry-compacting a mixture of sodium perborate monohydrate and from about 0.2 to about 30% by weight of a compacting aid based on the weight of said mixture, said compacting aid being selected from the group consisting of an alkali metal salt, alkaline earth metal salt, carbohydrate, anionic surfactant, and nonionic surfactant, and size-reducing the compactate formed to the desired particle size.
The process as in clam 10 wherein said alkali metal salt and said alkaline earth metal salt is selected from the group consisting of sodium perborate tetrahydrate, sodium carbonate decahydrate, sodium carbonate, sodium sulfate, sodium citrate, sodium lactate and sodium aluminum silicate.
Dependencies are inferred from the claim text.