Rinse aid composition containing water-soluble metal salt for use in automatic dishwashing for glassware corrosion protection
AssigneeThe Procter & Gamble Company
InventorsBrian Xiaoqing Song, Marie Rose Salem, Paul Joseph Drzewiecki
Life of this patent
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Abstract
a water-soluble metal salt, an acid, a non-ionic surfactant, a dispersant polymer and/or a perfume for use in automatic dishwashing is disclosed.
Claims36
A rinse aid composition for reducing glassware corrosion comprising:
- a) at least one water-soluble metal salt;
- b) an acid;
- c) a non-ionic surfactant;
- d) at least one of the following:
- a dispersant polymer, a perfume, and mixtures thereof, and
- e) optionally at least one component selected from the group consisting of acid, dispersant polymer, perfume, hydrotrope, binder, carrier medium, antibacterial active, dye, and mixtures thereof;
- wherein said rinse aid composition has a pH of less than about 5 when measured at a 10% concentration in an aqueous solution.
A method of rinsing cleaned glassware comprising the step of rinsing said cleaned glassware in an automatic dishwashing machine with a rinse aid composition comprising:
- a) at least one water-soluble metal salt;
- b) an acid;
- c) a non-ionic surfactant;
- d) at least one of the following:
- a dispersant polymer, a perfume, and mixtures thereof;
- and
- e) optionally at least one component selected from the group consisting of acid, dispersant polymer, perfume, hydrotrope, binder, carrier medium, antibacterial active, dye, and mixtures thereof;
- wherein said rinse aid composition has a pH of less than about 5 when measured at a 10% concentration in an aqueous solution.
A kit reducing glassware corrosion and film formation in an automatic dishwashing process comprising:
- (a) a package, (b) instructions for use and (c) a rinse aid composition suitable for use in automatic dishwashing comprising (i) a water-soluble metal salt comprising aluminum, zinc, magnesium, calcium, lanthanum, tin, gallium, strontium, titanium, and combinations thereof;
- (ii) an acid;
- (iii) a non-ionic surfactant;
- (iv) at least one of the following:
- a dispersant polymer, a perfume, and mixtures thereof;
- and (v) optionally at least one component selected from the group consisting of hydrotrope, binder, carrier medium, antibacterial active, dye, and mixtures thereof.
A method of reducing glassware corrosion and film formation in an automatic dishwashing process, wherein said method comprises the step of rinsing cleaned glassware with a rinse aid composition comprising:
- (a) at least one water-soluble metal salt;
- (b) a non-ionic surfactant;
- and
- (c) at least one component selected from the group consisting of acid, hydrotrope, binder, dispersant polymer, perfume, carrier medium, antibacterial active, dye, and mixtures thereof;
- and
- wherein said rinse aid composition has a pH of less than about 5 when measured at a 10% concentration in an aqueous solution, and wherein said composition.
Dependencies are inferred from the claim text.