Detergent composition with improved bleaching efficiency

Claim 1

A STABLE, SUBSTANTIALLY DRY, PERBORATE-CONTAINING DETERGENT COMPOSITON EFFECTIVE FOR WASHING AT THE BOIL, CONSISTING ESSENTIALLY OF BY WEIGHT FROM ABOUT 4 TO 40% OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF WATER-SOLUBLE, SYNTHETIC,NON-SOUP ANIONIC AND NONIONIC ORGANIC DETERGENTS, FROM ABOUT 3 TO ABOUT 20% WATERSOLUBLE INORGANIC PERBORATE, FROM ABOUT 40 TO ABOUT 90% WATER-SOLUBLE INORGANIC ALKALI METAL NON-OXIDIZING BUILDER SALTS, A WATER-SOLUBLE INORGANIC COPPER SALT, AND A SEQUESTERING AGENT SELECTED FROM THE GROUP CONSISTING OF METHYLAMINODIACETIC ACID, AMINOTRICTIC ACID, AND HYDROXYETHYLAMINODIACETIC ACID, THE COPPER SALT BEING PRESENT IN AMOUNT SUFFICIENT TO PRODUCE A COPPER ATOM CONCENTRATION OF FROM ABOUT 30 TO 300 PARTS PER MILLION PARTS BY WEIGHT OF THE DETERGENT COMPOSITION, AND THE SEQUESTERING AGENT BEIG PRESENT IN AMOUNT SUCH THAT 3 TO 15 MOLECULES THEREOF ARE CONTAINED IN THE DETERGENT COMPOSITION PER ATOM OF COPPER, SAID AMOUNTS OF COPPER SALT AND SEQUESTERING AGENT ENHANCING THE BLEACHING ACTION OF THE PERBORATE AT THE BOIL.