CA1194251A - Apparatus for dispensing a cleaning agent including dye stable to a halogen-releasing compound - Google Patents

Abstract

ABSTRACT OF THE DISCLOSURE
In the cleaning of toilets, it is advantageous to dispense into the bowl a cleaning composition containing a halogen releasing compound, for example alkaki metal hypochlorite, which serves to disinfect the bowl. The cleaning composition also contains a detergent, fragrance, and dye. A dispenser is used comprising a product chamber means for discharging and filling the dispenser and vent means. The dispenser may have at least two product chambers one for a detergent and dye constituent and another for a disinfectant. The present specification discloses in particular a passive dispenser comprising one or more product chambers and means adapted to fill the product chamber, as well as means to dispense the solution therefrom. The improvement comprises the inclusion within the product chamber of a halogen stable dye Acid Blue 249, C.I. No. 74220.

Description

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DETAILED DESCRIPTION OF INVENTION

In the cleaning of toilets, it is advantageous to dispense into the bowl a cleaning composition containing a halogen releasing compound, for example alkali metal hypochlorite, which serves to disinfect the bowl. The cleaning composition also contains a detergent, fragrance, and dye.

Recent U.S. Patents 4,171, 546, 4,186,546 and 4,208,747 to Dirksing; 4,281,421 to Nyquist et al; 4,305,162 to Cornelisse, Jr. et al, and 4,307,474 to Choy each disclose a passive dispenser which dispenses the active cleaning and optional constituents into the bowl in response to a change in toilet tank liquid level. These patents supplement the art in the field disclosed in older U.S. Patents 650,161 to Williams et al; 1,175,036 to Williams and 3,504,384 to Radley et al.

The aforesaid recent patents are characterized by providing a dispenser comprising a product chamber, means for discharging and filling the dispenser, and vent means.
Two or more of these dispensers can be used in combination to provide dispensation of active constituents from each dispenser. U.S. Patent 4,216,027 to ~ages discloses a dispenser of the same type, but having at least two product chambers, one chamber for the detergent and dye constituents, the other chamber for the disinfectant.

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U.S. Patents 4,249,274 and 4,308,625 t~ ~itko diseloses various dyes resistant ~o hy~ochlorite, such as FD~C slue No. 1 and FD&C Green No. 3.

It has now been found unexpectedly that Acid Blue 249, C.I~ No. 74220, a phthalocyanine dye, is also resistant to attacX by halogen releasing constituents, when said dye is included in a dispenser of the type described above. A dye of this type is available from Sandoz Colors Chemicals,Inc., under the name Carta Brilliant ~lue PTS
(43% active ingredient concentration).

In particular the above mentioned Acid Blue 249 is resistant to attack from N-halogenated organic materials, e.g., l-bromo-3-chloro-5,5-dimethylhydantoin. By stability is meant resistance of the dye to oxidation by halogen and re~ulting loss of color.

Thus the present invention provides a passive dis-penser comprising at least one product chamber~ means adapted to fill the product chamber, and means adapted to dispense solution therefrom. The improved dispenser includes within the product chamber the halogen stable dye Acid Blue 249, C.I. No. 74220.

In another embodiment the present invention provides a passive dispenser for dispensing a halogen releasing com-pound in solution into a body of liquid, the dispenser com-prising a first and a second product chamber, said product chambers being separate from one anothert means adapted to fill said chambers with liquid and to dispense solution there-from in response to changes in the level of the body of liquid, at least one product chamber containing the halogen stable 30 dye Acid Blue 249, Color Index No. 74,220.
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Co~parative tests were conducted on two dyes and on the Carta Brilliant Blue dye of the present invention.
A solution containing 5.2 ppm of to~al available halogen was prepared, 2.0 ppm being a typical halogen concentration used to effect disinfecting of a toilet bowl. At a dye level of 6.2 ppm, the following results were obtained for the three dyes tested:

DYE TIME TO COLORLESS SOL~TION
Carta Brilliant Blue 4~ hours (this invention) Acid Azure Blue 43 minutes (Hilton - Davis Co. --C.I. No. 42090) (FD&C
Blue No. 1) Irganol Blue Violet FLS 2.0 minutes ~Ciba Geigy Co.) From the above data it is apparent that Carta Brilliant Blue dye is quite stable in the presence of halogen releasing agents.

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Claims (7)

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1. In a passive dispenser comprising at least one product chamber, means adapted to fill the product chamber, and means adapted to dispense solution there-from, the improvement comprising the inclusion within said product chamber the halogen stable dye Acid Blue 249, C.I. No. 74220.

2. A passive dispenser for dispensing a halogen releasing compound in solution into a body of liquid, the dispenser comprising a first and a second product chamber, said product chambers being separate from one another, means adapted to fill said chambers with liquid and to dispense solution therefrom in response to changes in the level of the body of liquid, at least one product chamber containing the halogen stable dye Acid Blue 249, Color Index No. 74,220.

3. A dispenser as in claim 1, wherein the solution comprises aqueous alkali metal hypochlorite.

4. A dispenser as in claim 2, wherein the solution comprises aqueous alkali metal hypochlorite.

5. A dispenser as in claim 1, wherein the solution comprises 1-bromo-3-chloro-5,5-dimethylhydantoin.

6. A dispenser as in claim 2, wherein the solution comprises 1-bromo-3-chloro-5,5-dimethylhydantoin.

7. The dispensers of claims 1, 2 or 3 further com-prising means for venting at least one product chamber to the atmosphere.