Detergent compositions

Claim 1

A DETERGENT COMPOSITION COMPRISING 25 TO 50% OF AT LEAST ONE ALKALI METAL PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF SODIUM AND POTASSIUM SALTS OF ORTHOPHOSPHORIC ACID, METAPHOSPHORIC ACID, POLYPHOSPHORIC ACID AND PYROPHOSPHORIC ACID, 1 TO 10% OF MAGNESIUM OXIDE, AND 15 TO 50% OF A DETERGENT SELECTED FROM THE GROUP CONSISTING OF A NONIONIC NON-SOAP SYNTHETIC ORGANIC DETERGENT AND AN ANIONIC NON-SOAP SYNTHETIC ORGANIC DETERGENT, SAID COMPOSITION HAVING A PH WITHIN THE RANGE OF 7.5 TO 9.5 WHEN ADMIXED WITH WATER AT A TEMPERATURE BELOW APPROXIMATELY 60*C., SAID MAGNESIUM OXIDE BEING PRESENT IN AN AMOUNT PROVIDING A PH WITHIN THE RANGE OF 9.5 TO 11 WHEN SAID COMPOSITION IS ADMIXED WITH WATER AT A TEMPERATURE BETWEEN APPROXIMATELY 80 AND 100*C., SAID MAGNESIUM OXIDE BEING PRESENT IN THE FORM OF A POWDER THE PARTICLES OF WHICH ARE COATED WITH AN ORGANIC COATING SUBSTANCE WHICH IS SOLID AND INSOLUBLE IN WATER AT A TEMPERATURE BELOW APPROXIMATELY 60* C. TO PREVENT SAID MAGNESIUM OXIDE FROM DISSOLVING IN SAID SOLUTION AT A TEMPERATURE BELOW THE LAST MENTIONED TEMPERATURE, SAID ORGANIC COATING SUBSTANCE MELTING AT A TEMPERATURE OF 50 TO 60*C. TO PROVIDE FOR DISSOLVING OF SAID MAGNESIUM OXIDE IN WATER AT A TEMPERATURE ABOVE APPROXIMATELY 60*C., SAID ORGANIC COATING SUBSTANCE BEING PRESENT ON THE PARTICLES OF MAGNESIUM OXIDE IN AN AMOUNT BETWEEN 25 AND 75% BY WEIGHT OF THE COATED MAGNESIUM OXIDE.