Process of preparing pulverulent to granular perborate containing washing compositions

Abstract

Abstract PULVERULENT TO GRANULAR, PERBORATE CONTAINING WASHING COMPOSITION COMPRISING (A) FROM 5% TO 40% BY WEIGHT OF ANIONIC, AND OPTIONALLY AMPHOTERIC AND NON-IONIC SURFACE-ACTIVE COMPOUNDS WITH THE PROVISO THAT ANY NON-IONIC SURFACE-ACTIVE COMPOUND PRESENT DOES NOT CONSTITUTE MORE THAN 50% BY WEIGHT OF THE TOTAL AMOUNT OF SURFACE-ACTIVE COMPOUNDS. (B) FROM 7.5, TO 50% BY WEIGH OF A PERBORATE WHOSE WATER OF CRYSTALLIZATION IS BELOW THAT OF A PERBORATE TETRAHYDRATE. (C) FROM 15% TO 80% BY WEIGHT OF COMPOUNDS CAPABLE OF COMPLEXING CALCIUM IONS AND, OPTIONALLY OTHER ALKALINE BUILDERS. (D) FROM 0 TO 10% BY WEIGHT OF NON-WASHACTIVE COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF NEUTRAL INORGANIC COMPOUNDS AND WATER, AND (E) FROM 0 TO 10% BY WEIGHT OF OTHER CUSTOMARY WASHING COMPOSITION ADDITIVES, SAID COMPOSITION BEIN A MIXTURE OF AT LAST (TWO PULVERULENT COMPONENTS COMPRISING (A) A PULVERLUENT COMPONENT COMPRISING (1) SAID ANIONIC AND ANY AMOPHOTERIC AND NON-IONIC SURFACE-ACTIVE COMPOUNDS, (2) OPTIONALLY PRESENT NON-HYDROLYSABLE COMPLEX-FORMERS, (3) NOT MORE THAN 20, BY WEIGHT OF HYDROLYSABLE COMPLEX-FORMERS, AND (4) OTHER CUSTOMARY WASHING COMPOSITION ADDITIVES UTILIZED IN SMALL AMOUNTS SAID PULVERULENT COMPONENT BEING PREPARED BY DRYING WITH HEAT AN AQUEOUS SUSPENSION OR SLURRY OF THE SAID COMPONENTS, (B) SAID PERBORATE COMPONENT, AND (C) A PULVERULENT COMPONENT COMPRISING THE REMAINDER OF THE HYDROLYSABLE COMPLEX-FORMERS AND ALKALINE BUILDERS, IF ANY. THE PROCESS OF PRODUCING THE WASHING COMPOSITION IS ALSO PART OF THE INVENTION.

Inventors

• 👤 Horstmar Nagel
• 👤 Markus Berg
• 👤 Albrecht Lohr
• 👤 Wilfried Adler

Bibliographic Details