Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Specific organic component
Reexamination Certificate
2000-09-12
2003-07-15
Douyon, Lorna M. (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Specific organic component
C510S221000, C510S309000, C510S340000, C510S356000, C510S360000, C510S372000, C510S375000, C510S421000, C510S514000, C510S524000, C510S535000
Reexamination Certificate
active
06593287
ABSTRACT:
TECHNICAL FIELD
The present invention relates to detergent composition having low-foaming nonionic surfactants and more particularly to compositions for cleaning dishes or hard surfaces having ether-capped poly(oxyalkylated) alcohol surfactants which have superior spotting and filming benefits in dishwashing and hard surface cleaning applications.
BACKGROUND OF THE INVENTION
Due to the varied nature of different cleaning compositions, different surfactants are better suited for some applications while being less suited or totally unsuitable for other applications. Nonionic surfactants, such as alcohol ethoxylates, alkyl polyglycosides, and alkyl glucose amides are of considerable importance in detergent products. For example, under some conditions, nonionic surfactants aid cleaning of greasy soils and inhibit the formation of calcium soap. However, conventional nonionic surfactants designed for effective cleaning in laundry products form liquid crystalline phases on mixing with water. These phases can hinder the rate of mixing with water and lead to undesirable optical properties of thin films on solution drying. For example, conventional nonionics sprayed on the surface of granules to achieve target density can give rise to poor granule dissolution and residue in horizontal axis machine dispensers. Conventional nonionics formulated at high levels in liquid products can lead to poor rates of mixing with water and consumer concern. Conventional nonionics in window and floor cleaners can form visible liquid crystalline films on drying that increase the.effort required by the consumer to achieve a good results. Similarly, a nonionic surfactant for use in an automatic dishwashing would need to minimize foam production and not leave undesirable spots and films on the cleaned surfaces.
On account of the foregoing technical constraints as well as consumer needs and demands, product compositions are undergoing continual change and improvement. Moreover environmental factors such as the need for biodegradable materials, the restriction of phosphate, the desirability of providing ever-better cleaning results with less product, providing less thermal energy demand, and less water to assist the washing process, have all driven the need for improved compositions.
Accordingly, the need remains for new surfactants which are suitable for use in a variety of compositions which can provide improve dissolution of solid products (like bars and tablets) and granular products, improved rates of mixing with water as with liquid products, improved streaking and filming performance as in hard surface cleaners and automatic dishwashing, good cleaning, suds control and good biodegradability while avoiding incompatibility with other cleaning surfactants and/or bleach.
BACKGROUND ART
U.S. Pat. No. 4,272,394, WO 94/22800, and WO 93/04153.
SUMMARY OF THE INVENTION
This need is met by the present invention wherein detergent compositions, and in particular, bleach, dish or hard surface cleaning compositions having a low-foaming nonionic surfactant are provided. The compositions employ the novel surfactants of the present invention, either alone or in combination with other surfactants, to provide improved spotting and filming performance as well as improved cleaning performance on greasy soils and suds or foam suppression in certain applications. While not wishing to be bound by theory, it is believed the alcohol surfactants of the present invention deliver superior spotting and filming benefits via improved sheeting action. As for improved cleaning performance on greasy soils, such benefits are shown when the alcohol surfactants of the present invention are employed in conjunction with a high cloud point nonionic surfactant as disclosed in detail herein. Lastly, certain alcohol surfactants of the present invention may also act to reduce the suds or foaming associated with food soils or various other cleaning agents.
In accordance with a first aspect of the present invention, a detergent composition comprising an ether-capped poly(oxyalkylated) alcohol surfactant is provided. The composition comprises:
(a) from about 0.01% to about 50%, preferably from about 0.1% to about 20%, more preferably from about 0.1% to about 10% by weight of the composition of surfactant, wherein said surfactant comprises an ether-capped poly(oxyalylated) alcohol surfactant having the formula:
RO(R
1
O)
x
R
2
wherein, R is selected from the group consisting of linear or branched, saturated or unsaturated, substituted or unsubstituted, aliphatic or aromatic hydrocarbon radicals having from about 1 to about 30 carbon atoms; R
1
may be the same or different, and is independently selected from the group consisting of branched or linear C
2
to C
7
alkylene in any given molecule; R
2
is selected from the group consisting of:
(i) a 4 to 8 membered substituted, or unsubstituted heterocyclic ring containing from 1 to 3 hetero atoms;
(ii) a 7 to 13 membered substituted, or unsubstituted polycyclic ring;
(iii) a hydrocarbon of the formula:
—(CH
2
)
y
—X
wherein, y is an integer from 1 to 7, X is a 4 to 8 membered substituted, or unsubstituted, saturated or unsaturated cyclic or aromatic hydrocarbon radical; and
(iv) a hydrocarbon radical of the formula:
—C(CH
3
)
2
R
3
wherein R
3
is selected from the group consisting of linear or branched, saturated or unsaturated, substituted or unsubstituted, aliphatic or aromatic hydrocarbon radicals having from about 1 to about 30 carbon atoms, provided that when R
3
is methyl, R is branched;
wherein x is a number from 1 to about 30;
(b) from about 0.1% to about 99% by weight of the composition of an adjunct ingredient.
In accordance with a second aspect of the present invention, a automatic dishwashing rinse aid composition comprising an ether-capped poly(oxyalkylated) alcohol surfactant is provided. The rinse aid composition comprises:
(a) from about 0.01% to about 50% by weight of the composition of surfactant, wherein said surfactant comprises an ether-capped poly(oxyalylated) alcohol surfactant having the formula:
RO(R
1
O)
x
R
2
wherein, R is selected from the group consisting of linear or branched, saturated or unsaturated, substituted or unsubstituted, aliphatic or aromatic hydrocarbon radicals having from about 1 to about 30 carbon atoms; R
1
may be the same or different, and is independently selected from the group consisting of branched or linear C
2
to C
7
alkylene in any given molecule; R
2
is selected from the group consisting of:
(i) a 4 to 8 membered substituted, or unsubstituted heterocyclic ring containing from 1 to 3 hetero atoms;
(ii) a 7 to 13 membered substituted, or unsubstituted polycyclic ring;
(iii) a hydrocarbon of the formula:
—(CH
2
)
y
—X
wherein, y is an integer from 1 to 7, X is a 4 to 8 membered substituted, or unsubstituted, saturated or unsaturated cyclic or aromatic hydrocarbon radical; and
(iv) a hydrocarbon radical of the formula:
—C(CH
3
)
2
R
3
wherein R
3
is selected from the group consisting of linear or branched, saturated or unsaturated, substituted or unsubstituted, aliphatic or aromatic hydrocarbon radicals having from about 1 to about 30 carbon atoms, provided that when R
3
is methyl, R is branched;
wherein x is a number from 1 to about 30; and
(b) from about 0.1% to about 99% by weight of the composition of an adjunct ingredient; and
(c) from about 0.1% to about 99% by weight of the composition of an aqueous liquid carrier.
In accordance with a third aspect of the present invention, a bleaching composition comprising an ether-capped poly(oxyalkylated) alcohol surfactant is provided. The bleaching composition comprises:
(a) from about 0.01% to about 50% by weight of the composition of surfactant, wherein said surfactant comprises an ether-capped poly(oxyalylated) alcohol surfactant having the formula:
RO(R
1
O)
x
R
2
wherein, R is selected from the group consisting of linear or branched, saturated or unsaturated, substituted or unsubstituted, aliphatic or aromatic hydrocarbon radicals having from about 1 t
Haeggberg Donna Jean
Jordan, IV Glenn Thomas
Kluesener Bernard William
Scheper William Michael
Sivik Mark Robert
Cook C. Brant
Douyon Lorna M.
Mruk Brian P.
Robinson Ian S.
The Procter & Gamble & Company
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