Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – With oxygen or halogen containing chemical bleach or oxidant...
Reexamination Certificate
2001-11-30
2004-03-02
Gupta, Yogendra N. (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
With oxygen or halogen containing chemical bleach or oxidant...
C510S310000
Reexamination Certificate
active
06699828
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to aqueous liquid detergent compositions and methods of using such compositions to launder fabrics. More specifically, the present invention relates to aqueous liquid detergent compositions comprising an effervescent system.
BACKGROUND OF THE INVENTION
Effervescent systems have been employed in specific types of cleaning and personal care compositions in the past. For example, effervescent agents have been incorporated into non-aqueous liquid detergent compositions.
Further, effervescent systems, or parts thereof, have been used in non-detergent (i.e., non-surfactant) carpet cleaning compositions
Further yet, effervescent systems have been employed in contact lens cleaning compositions and other detergent compositions in the form of tablets.
Still further yet, effervescent systems have been employed in toothpastes, mouthwash (mouth rinse), dentifrice and cosmetics in various physical forms.
However, the use of effervescent systems in aqueous liquid detergent compositions is not known, nor has it been suggested in the prior art.
Accordingly, there is a need for an aqueous liquid detergent composition comprising an effervescent system, and a method for laundering fabrics using such a composition.
SUMMARY OF THE INVENTION
The present invention meets and fulfills the needs identified above by providing an aqueous liquid detergent composition comprising an effervescent system.
Many aqueous liquid detergent compositions comprise water-insoluble or partially water-insoluble solid particulates, such as bleaching agents. It has been surprisingly found that the use of an effervescent system in such aqueous liquid detergent compositions increases the dissolution rate of such solid particulates, thus allowing the actives in the solid particulates to perform more rapidly compared to simply allowing dissolution of the solid particulates in the absence of an effervescent system.
In one aspect of the present invention, an aqueous liquid detergent composition comprising an effervescent system is provided.
In another aspect of the present invention, an aqueous liquid detergent composition comprising a surfactant and an effervescent system is provided.
In yet another aspect of the present invention, an aqueous liquid detergent composition comprising an effervescent system comprising an effervescent agent-containing component, preferably a base, and an acid agent-containing component, preferably an inorganic acid, more preferably citric acid, is provided.
In still yet another aspect of the present invention, an aqueous liquid detergent composition comprising an effervescent agent-containing component and an acid agent-containing component wherein the effervescent agent-containing component is contained within a first compartment of a dual compartment container and the acid agent-containing component is contained within the other compartment of the dual compartment container such that the effervescent agent-containing component and acid agent-containing component only effervescent after being mixed together.
In still yet another aspect of the present invention, a method for laundering fabrics in need of laundering comprising contacting the fabrics with the aqueous liquid detergent composition of the present invention is provided.
In yet another aspect of the present invention, an aqueous liquid detergent composition comprising an effervescent system comprising an effervescent agent-containing component, preferably a peroxide reducing enzyme, such as peroxidase, laccase, dioxygenase and/or catalase, and a source of peroxide component, preferably hydrogen peroxide, is provided.
In still yet another aspect of the present invention, an aqueous liquid detergent composition comprising an effervescent agent-containing component and a source of peroxide component wherein the effervescent agent-containing component is contained within a first compartment of a dual compartment container and the source of peroxide component is contained within the other compartment of the dual compartment container such that the effervescent agent-containing component and the source of peroxide component only effervesce after being mixed together.
Accordingly, the present invention provides an aqueous liquid detergent composition comprising an effervescent system and a method for laundering fabrics in need of laundering comprising contacting the fabrics with the aqueous liquid detergent composition of the present invention.
These and other aspects, objects, features and advantages will be clear from the following detailed description, examples and appended claims.
All percentages, ratios and proportions herein are on a weight basis unless otherwise indicated. All documents cited herein are hereby incorporated by reference.
DETAILED DESCRIPTION
Aqueous Liquid Detergent Compositions
“Aqueous liquid detergent compositions” as used herein means heavy duty liquid laundry detergent compositions, light duty liquid detergent compositions (liquid dishwashing compositions), liquid fabric softeners, liquid fabric conditioners, liquid hard surface cleaning compositions. However, toothpastes, mouth wash compositions, mouth rinse compositions, carpet cleaning compositions and cosmetic compositions are not within the scope of the present invention.
Effervescent System
The effervescent system of the present invention can be any suitable effervescent system known to those skilled in the art. For example, the effervescent system may comprise two components: 1) a source of peroxide component such as hydrogen peroxide and 2) an effervescent agent-containing component such as catalase enzyme and/or the effervescent system may comprise two components: 1) an effervescent agent-containing component, such as bicarbonate and 2) an acid agent-containing component, such as citric acid.
“Effervescence” as used herein includes, but is not limited to, the formation of gas, gas bubbles, foam, mousse, etc. from the effervescent system as described herein.
Preferably, the effervescent system of the present invention comprises the following two components: 1) an effervescent agent-containing component and 2) an acid agent-containing component and/or a source of peroxide component.
It is desirable that the effervescent agent-containing component and the acid agent-containing component and/or the source of peroxide component are chemically separated from one another until effervescence is desired, at which time the two components are mixed together. Examples of chemical separation are encapsulation of one or both of the components in the same matrix.
Alternatively, it is desirable that the effervescent agent-containing component and the acid agent-containing component and/or the source of peroxide component are physically separated from one another until effervescence is desired, at which time the two components are mixed together. Examples of physical separation are a dual compartment container, such as a bottle like that described in U.S. Pat. No. 4,678,103 to Dirksing, wherein one component is in one compartment and the other component is in the other compartment. The two components preferably do not mix until effervescence is desired, such as when the aqueous liquid detergent composition is being poured into a dosing device and/or washing machine.
Another example of a package form which keeps the effervescent agent-containing component and the acid agent-containing component and/or the source of peroxide component physically separated until such time that they are mixed, is a single-use pouch or microsphere containing one or the other, but not both, of the effervescent agent-containing component or the acid agent-containing component and/or the source of peroxide component. For example, the single-use pouch or microspheres (i.e., Expancel® commercially available from Expancel of Sweden (an Akzo Nobel company)) may contain the acid agent-containing component or the source of peroxide component, wherein the single-use pouch or microsphere is added to the effervescent agent-containing component.
Chemical an
Bouvier Michel
de Buzzaccarini Francesco
Depoot Karel Jozef Maria
Kahn Johanna Elizabeth
Luipold LeeAnn
Cook C. Brant
Grunzinger Laura
Gupta Yogendra N.
Matthews Armina E.
Petruncio John M
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