Method of producing perborate

PCT No. PCT/EP89/01015 Sec. 371 Date Dec. 9, 1991 Sec. 102(e) Date Dec. 9, 1991 PCT Filed Aug. 30, 1989 PCT Pub. No. WO90/02703 PCT Pub. Date Mar. 22, 1990.A method for the production of granular sodium perborate tetrahydrate is disclosed herein. The method includes the steps of adding 0.3-5% by wei...

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Bibliographische Detailangaben
Hauptverfasser:	FRENCH, SEAMUS, JAHNKE, ULRICH, CARDUCK, FRANZ-JOSEF, KOESTER, KLAUS
Format:	Patent
Sprache:	eng
Schlagworte:	BEARINGS BLASTING CHEMISTRY COMPOUNDS THEREOF ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INORGANIC CHEMISTRY LIGHTING MECHANICAL ENGINEERING METALLURGY NON-METALLIC ELEMENTS ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS THERMAL INSULATION IN GENERAL WEAPONS
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Zusammenfassung:	PCT No. PCT/EP89/01015 Sec. 371 Date Dec. 9, 1991 Sec. 102(e) Date Dec. 9, 1991 PCT Filed Aug. 30, 1989 PCT Pub. No. WO90/02703 PCT Pub. Date Mar. 22, 1990.A method for the production of granular sodium perborate tetrahydrate is disclosed herein. The method includes the steps of adding 0.3-5% by weight of a sodium salt or a potassium salt of a polymeric carboxylic acid to powdered perborate tetrahydrate, softening the mixture by heating under pressure to form a plastically deformable mass, deforming the plastically deformable mass into thin strands by pressing, and comminuting the strands into granular form. The perborate tetrahydrate may be de-watered to produce granular perborate monohydrate. The final granular products exhibit high abrasion resistance and are preferably used in washing and cleaning agents.