Dissolvable Toilet Brush - Low pH Formulations For Antibacterial And Antiviral Benefits
Low-pH compositions are provided for dissolvable solid unit dose formulations that can be used with a wand apparatus to clean a toilet surface. The formulations include surfactants, an organic acid and an organic acid buffering agent, and virgin soap pellets and/or a cellulose filler. Formulations having antibacterial efficacy include an anionic surfactant present at about 15% to about 30% by weight of the composition, an organic acid-buffer system in an amount sufficient to provide toilet water with a pH which is less than 4.6 when the composition is dissolved in toilet water, and virgin soap pellets.
1 . A dissolvable solid unit dose toilet cleaning composition comprising:
an anionic surfactant in an amount of about 15% to about 30% by weight of the composition;
a water-soluble inert salt;
an organic acid and an organic acid buffering agent in a ratio of acid to buffering agent of from about 4:1 to about 10:1; and
virgin soap pellets or a cellulose filler, or a combination thereof; wherein time to breakage of the unit dose when submerged in toilet water is less than 5 minutes.
2 . The unit dose toilet cleaning composition of claim 1 , wherein the composition provides an aqueous solution having a pH less than 4.6 when dissolved in water.
3 . The unit dose toilet cleaning composition of claim 1 , wherein the cellulose filler is microcrystalline cellulose.
4 . The unit dose toilet cleaning composition of claim 3 , further comprising virgin soap pellets.
5 . The unit dose toilet cleaning composition of claim 1 , wherein the virgin soap pellets or a cellulose filler, or a combination thereof is a combination of virgin soap pellets and a cellulose filler.
6 . The unit dose toilet cleaning composition of claim 1 , wherein the acid comprises 40% to 60% by weight of the composition.
7 . The unit dose toilet cleaning composition of claim 1 , wherein the acid is selected from the group consisting of lactic acid, glycolic acid, citric acid, and malic acid.
8 . The unit dose toilet cleaning composition of claim 1 , wherein the anionic surfactant comprises about 18 to about 25% by weight of the composition.
9 . The unit dose toilet cleaning composition of claim 1 , wherein the anionic surfactant is selected from the group consisting of Sodium Dodecylbenzenesulfonate, Sodium Cocoyl Isethionate, Sodium Olefin Sulphonate, and combinations thereof.
10 . The unit dose toilet cleaning composition of claim 1 , wherein the anionic surfactant is Sodium Olefin Sulphonate.
11 . The unit dose toilet cleaning composition of claim 1 , wherein the virgin soap pellets comprise about 5% to about 30% by weight of the composition.
12 . The unit dose toilet cleaning composition of claim 1 , wherein the virgin soap pellets or a cellulose filler, or a combination thereof comprises about 8% to about 35% by weight of the composition.
13 . The unit dose toilet cleaning composition of claim 1 , further comprising about 1% to about 7% of a binder.
14 . The unit dose toilet cleaning composition of claim 1 comprising an indentation in at least one surface that is adapted to receive and engage a wand.
15 . An antibacterial unit dose toilet cleaning composition comprising:
an anionic surfactant present at about 15% to about 30% by weight of the composition;
an organic acid-buffer system in an amount sufficient to provide toilet water with a pH which is less than 4.6 when the composition is dissolved in toilet water; and
virgin soap pellets.
16 . The antibacterial unit dose toilet cleaning composition of claim 15 , further comprising a water-soluble inert salt.
17 . The antibacterial unit dose toilet cleaning composition of claim 15 , wherein the organic acid-buffer system comprises citric acid.
18 . The antibacterial unit dose toilet cleaning composition of claim 17 , wherein the organic acid-buffer system has a ratio of citric acid to buffer of about 8:1 to about 10:1.
19 . The antibacterial unit dose toilet cleaning composition of claim 15 , wherein the anionic surfactant comprises sodium olefin sulfate.
20 . A dissolvable toilet brush composition comprising:
about 18% to about 25% by weight anionic surfactant;
about 40% to about 60% by weight citric acid;
about 8% to about 23% by weight virgin soap pellets;
about 1% to about 7% by weight sodium chloride; and
about 1% to about 10% by weight of a citric acid buffering agent, wherein the composition provides water with a pH which is less than 4.6 when the composition is dissolved in water.