Patent ID: 7084102

Claim:
A perfumed detergent tablet, the tablet comprising a clay mineral compound, and a perfume composition that is substantially free of Schiff base and wherein said tablet further comprises a heavy metal ion sequestrant coating from 0.5% to 5% by weight of the tablet and wherein said heavy metal ion sequestrant comprises alkali metal ethane 1-hydroxy diphosphonates: ethylenediamine-N,N′-disuccinic acid (EDDS); Na 2 EDDS; Na 3 EDDS; MgEDDS Mg 2 EDDS; iminodiacetic acid derivatives; ethylenetriamine pentaacetic acid; ethylenediamine disuccinic acid; ethylenediamine diglutaric acid; 2-hydroxypropylenediamine disuccinic acid; amino alkylene poly (alkylene phosphonates); nitrilo trimethylene phosphonates; iminodiacetic acid-N-2-hydroxypropyl sulfonic acid; aspartic acid N-carboxymethyl N-2-hydroxypropyl-3-sulfonic acid; β-alanine-N-N′-diacetic acid; aspartic acid-N,N′-diacetic acid; aspartic acid-N-monoacetic acid; iminodisuccinic acid, the alkali metal, alkaline earth metal, ammonium, or substituted ammonium salts thereof.