In-tank toilet dispenser
AssigneeThe Drackett Company
InventorsRichard S. Hutchings, Carey B. Bottom
Life of this patent
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Abstract
Treatment of water-containing reservoirs with a cleaning composition including a water-dissipatable polyester polymer, the polyester polymer concentration in the reservoir being in an amount effective to capture heavy metal ions, thereby inhibiting staining. In a preferred embodiment, the polyester complexes a perfume, the perfume being released in dilute solution as in the reservoir, whereby a fragrance bloom is provided to the environment.
Claims9
An in-tank toilet dispenser containing a cleaning composition and adapted to release an effective cleaning amount of said composition into the toilet, said composition comprising up to about 15% surfactant, and from about 0.05 to about 10% by weight of the water-dissipatable polyester polymer which is the reaction product of (a) a difunctional dicarboxylic acid, (b) a difunctional sulfomonomer, and (c) a glycol or a glycol and diamine mixture, the polyester having an inherent viscosity of at least 0.1, the cleaning composition containing above about 65% water, the amount of said composition released from the dispenser being sufficient to provide a polymer concentration of from about 40 ppb to about 100 ppm, whereby heavy metal ions are captured by the polymer to inhibit staining.
Dependencies are inferred from the claim text.