Claims
- 1. A thickened aqueous bleach composition for use in a spray dispenser to deliver the composition onto a hard surface to be cleaned, the dispenser tending to divide the composition into particles resulting in the release of bleach odor, the composition comprising:
- (a) an aqueous solution of about 0.1 to 15 weight percent of an alkali metal hypochlorite and;
- (b) about 0.2-7.5 weight percent a thickening system of consisting essentially of
- (i) a hexadecyl di (C.sub.1-2 alkyl) amine oxide component having an alkyl chain length distribution of at least 80% C.sub.16 ; and
- (ii) an organic anionic counterion selected from the group consisting of aryl or C.sub.2-6 alkyl sulfonates, aryl or C.sub.2-6 alkyl carboxylates, sulfated C.sub.2-6 alkyl or aryl alcohols and mixtures thereof said aryl groups being derived from benzene or naphthalene and being unsubstituted or substituted with C.sub.1-4 alkyl groups, C.sub.1-4 alkoxy groups, halogens, nitro groups or mixtures thereof and wherein
- a ratio of amine oxide component to counterion is between 4:1 and 1:2, the system possesses a Trouton ratio of greater than about 50 and an initial viscosity measured at 21.degree. C. and 5 rpm of at least about 20 cP, and the composition pH is above about 10.5.
- 2. The thickened bleach composition of claim 1 wherein
- the counterion is an alkali metal aryl sulfonate.
- 3. The thickened liquid bleach composition of claim 1 further comprising a hypochlorite bleach stable fragrance, the reduction of bleach odor enhancing the odor of the fragrance.
- 4. The thickened liquid bleach composition of claim 1 and further including a pH adjusting agent.
- 5. The thickened liquid bleach composition of claim 1 having a viscosity in the range of about 100-300 cP for achieving optimum atomization in a spray-type dispenser.
- 6. A stable thickened viscoelastic cleaning composition, comprising, in aqueous solution:
- (a) about 0.1 to 15 weight percent of a hypochlorite cleaning active; and
- (b) a viscoelastic thickening system consisting essentially of:
- (i) about 0.1-5.0 weight percent of a hexadecyl di (C.sub.1-2 alkyl) amine oxide component having an alkyl chain length distribution of at least 80% C.sub.16 ; and
- (ii) about 0.1 to 2.5 weight percent of an organic anionic counterion selected from the group consisting of aryl or C.sub.2-6 alkyl sulfonates, aryl or C.sub.2-6 alkyl carboxylates, sulfated C.sub.2-6 alkyl or aryl alcohols and mixtures thereof said aryl groups being derived from benzene or naphthalene and being unsubstituted or substituted with C.sub.1-4 alkyl groups, C.sub.1-4 alkoxy groups, halogens, nitro groups or mixtures thereof and wherein a ratio of amine oxide component to counterion is between 4:1 and 1:2, the thickening system possesses a Trouton ratio of greater than about 50 at a shear rate of between 500-10,000 sec..sup.-1 and an initial viscosity measured at 21.degree. C. and 5 rpm of at least about 20 cP, and the composition pH is above about 10.5.
- 7. A method of controlling bleach odor in a composition which tends to divide into particles resulting in the release of bleach odor when the composition is dispersed through a spray dispenser orifice, the method comprising the steps of:
- (a) forming an aqueous solution of about 0.1% to about 10% by weight of an alkali metal hypochlorite; and
- (b) adding thereto a thickening component consisting essentially of
- (1) about 0.1-5 weight percent of a hexadecyl di (C.sub.1-2 alkyl) amine oxide component having an alkyl chain length distribution of at least 80% C.sub.16 ; and
- (2) about 0.1-2.5 weight percent of an organic anionic counterion selected from the group consisting of aryl or C.sub.2-6 alkyl sulfonates, aryl or C.sub.2-6 alkyl carboxylates, sulfated C.sub.2-6 alkyl or aryl alcohols and mixtures thereof said aryl groups being derived from benzene or naphthalene and being unsubstituted or substituted with C.sub.1-4 alkyl groups, C.sub.1-4 alkoxy groups, halogens, nitro groups or mixtures thereof and wherein
- a ratio of amine oxide component to counterion is between 4:1 and 1:2, the system possesses a Trouton ratio of greater than about 50 at a shear rate of 500-10,000 sec..sup.-1 and an initial viscosity measured at 21.degree. C. and 5 rpm of at least about 20 cP, and the composition pH is above about 10.5; and
- (c) placing the resulting composition into a spray-type dispenser.
- 8. The method of claim 7 wherein the composition has a Trouton ratio greater than about 70.
- 9. The method of claim 7 further comprising the step of adding a hypochlorite bleach stable fragrance, the reduction of bleach odor achieved in the composition also resulting in an enhanced odor of the fragrance.
- 10. A thickened viscoelastic drain opening composition comprising, in aqueous solution:
- (a) 1 to 10 weight percent of a hypochlorite drain opening active; and
- (b) 0.5 to 20 weight percent of a viscoelastic thickening system consisting essentially of
- (i) about 0.1-5 weight percent of a hexadecyl di (C.sub.1-2 alkyl) amine oxide component having an alkyl chain length distribution of at least 80% C.sub.16 ; and
- (ii) about 0.1 to 2.5 weight percent of an organic anionic counterion selected from the group consisting of aryl or C.sub.2-6 alkyl sulfonates, aryl or C.sub.2-6 alkyl carboxylates, sulfated C.sub.2-6 alkyl or aryl alcohols and mixtures thereof said aryl groups being derived from benzene or naphthalene and being unsubstituted or substituted with C.sub.1-4 alkyl groups, C.sub.1-4 alkoxy groups, halogens, nitro groups or mixtures thereof and wherein
- a ratio of amine oxide component to counterion is between 4:1 and 1:2, the system possesses a Trouton ratio of greater than about 50 at a shear rate of 500-10,000 sec..sup.-1 and an initial viscosity measured at 21.degree. C. and 5 rpm of at least about 20 cP and the composition has a density greater than that of water and a pH of above about 10.5.
- 11. The drain opening composition of claim 10 wherein
- the drain opening active is selected from the group consisting of acids, bases, oxidants, reductants, solvents, enzymes, thioorganic compounds, and mixtures thereof.
- 12. The drain opening composition of claim 10 wherein the organic counterion is aryl or C.sub.2-6 alkyl sulfonate, aryl or C.sub.2-6 alkyl carboxylate, sulfated alkyl or aryl alcohols, and mixtures thereof.
- 13. The composition of claim 10 wherein the drain-opening active is sodium hypochlorite, present in an amount of about 1-10 percent by weight, and wherein the composition further comprises:
- (a) 0.5 to 20 weight percent of an alkali metal hydroxide;
- (b) 0 to 5 weight percent of an alkali metal silicate; and
- (c) 0 to 5 weight percent of an alkali metal carbonate.
- 14. A method of employing a thickened aqueous bleach composition on a hard surface to be cleaned, in steps comprising:
- forming a thickened liquid bleach composition to comprise an aqueous solution of an alkali metal hypochlorite, a pH adjusting agent in an amount effective for adjusting the pH to greater than about 10.5, and a thickening component consisting essentially of
- (a) a hexadecyl di (C.sub.1-2 alkyl) amine oxide component having an alkyl chain length distribution of at least 80% C.sub.16 ; and
- (b) an organic anionic counterion selected from the group consisting of aryl or C.sub.2-6 alkyl sulfonates, aryl or C.sub.2-6 alkyl carboxylates, sulfated C.sub.2-6 alkyl or aryl alcohols and mixtures thereof, said aryl groups being derived from benzene or naphthalene and being unsubstituted or substituted with C.sub.1-4 alkyl groups, C.sub.1-4 alkoxy groups, halogens, nitro groups or mixtures thereof, and wherein
- a ratio of amine oxide component to counterion is between 4:1 and 1:2, the system possess a Trouton ratio of greater than about 50 at a shear rate of between 500-10,000 sec.-1 and an initial viscosity measured at 21.degree. C. and 5 rpm of at least about 20 cP, and
- directing with a spray dispenser the thickened liquid bleach composition onto the surface to be cleaned.
- 15. The method of claim 14 wherein
- the composition has a Trouton ratio of greater than about 70.
- 16. The method of claim 14 further comprising
- a hypochlorite-stable fragrance, the reduction of bleach odor achieved in the composition resulting in an enhanced odor of the fragrance.
Parent Case Info
This is a continuation of application Ser. No. 07/963,144 filed Oct. 19, 1992, now abandoned.
US Referenced Citations (21)
Foreign Referenced Citations (1)
Number |
Date |
Country |
110544 |
Jun 1984 |
EPX |
Continuations (1)
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Number |
Date |
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Parent |
963144 |
Oct 1992 |
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