Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
2001-05-14
2002-08-13
Sanders, Kriellion A. (Department: 1714)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
C524S386000, C524S391000, C524S400000, C524S417000, C524S430000, C252S576000, C428S537500
Reexamination Certificate
active
06433053
ABSTRACT:
FIELD OF THE INVENTION
The present invention generally relates to compositions, for a making surface adhesion modifying compositions which aids in the removal of food soils form those surfaces. The present invention also relates to cleaning compositions which also modify the surface adhesion of food soils to a hard surface.
BACKGROUND OF THE INVENTION
It has always been well understood that regardless to what degree a surface has been rendered “cleaned” the mere appearance of residues due to the cleaning system will bring into question the efficiency of the cleaning product. Consequently, when a film, a residue or streaking is left behind, the success of the cleaning process becomes dubious. Therefore not only must a cleaning composition wash the surface in question but it must also leave the surface with the appearance of being cleaned.
Most soils, especially, food soils, such as cake dough, meat juices, etc., animal faces, are deposited on to a surface “wet”. That is, these soils contain some water, which after time evaporates leaving a hardened soil. It is much easier to remove these soils while “wet” than when the water has evaporated “hardening” the soil. In this scenario, the consumer is faced with two choices, either clean up the spill immediately and take advantage of the moisture in the soil or wait till the soil has hardened. The former, while it is ideal, is impractical for today's busy consumer, with the multitude of demands on consumers time, stopping to clean up every spill, even minor ones as they happen, is time consuming and impractical. Conversely, while waiting till the end of food preparation or the end of the meal, may save time by doing all the cleaning at once. The soil has by now hardened, making the cleaning task much more difficult and time consuming. In this case the consumer is left with the situation of either doing a poor job and leaving the stubborn satins or resorting to harsh and/or abrasive cleaners, which is far from desirable, especially on fine china or delicate work surfaces such as marble. This limits the consumer to either cleaning up every little spill as it happens or resort to harsh and/o abrasive chemicals to remove tough soils after they have dried.
Non-stick fry pans do not have this problem. But, coating every possible food contact surface that could, such as cutting boards, kitchen counter tops, plates, silverware, high chair trays etc., would be expensive and impracticable. Applying a coating of “non-stick” baking spray would certainly be a cheap and readily available alternative to Teflon coating all food contact surfaces. The problem is that these compositions are when applied to a surface are greasy to the touch and leave a very distinctive and visibly unappealing layer. The appearance is that all the surfaces have been smeared with a stick of butter or margarine. While these so treated surfaces are easy to remove tough food soils from they have the distinct appearance of being uncleaned. Consequently, these compositions while solving one problem, create new ones which, would result in the entire surface having the appearance of being unclean.
The problem remains that there is no convenient way to easily remove tough soils.
SUMMARY OF THE INVENTION
It has now been surprisingly found that a surface adhesion modifying composition has been found, without the greasy or oily feel negatives of “non-stick” baking sprays. These novel compositions have been found to not have the negative surface appearance of “non-stick” baking sprays. These compositions are suitable for application ton a multitude of surfaces, both indoors and outdoor. They can be applied to direct food contact areas, such as tableware, barbecues, cutting board, they can be applied to food preparation and eating areas, such as tables, floors, cupboards, drawers, stovetops, chairs. They can even be applied to outdoor area such as doors, walls, windows, picnic tables and chairs to aid in the removal tough soils such as bird droppings and the like. These compositions can even be used in and around kitty litter to aid in the removal of the animal faces from the kitty litter box and the surrounding area.
In a first aspect the compositions of the present invention are surface adhesion modifying compositions, which comprise a film forming polymer and a release aid, wherein said film forming polymer and said release aid are present in a weight ratio of from about 1:20 to about 20:1, and said composition is without an oily or greasy feel or touch when applied to a surface.
In a second aspect the compositions of the present invention are composition for providing non-stick properties to a hard surface wherein said composition when applied to said surface lowers the adhesion of a soil to said surface such that the adhesion force of the soil to said surface is less than the cohesion force of the soil according to the adhesion test and further said composition has a non-greasy feel when applied to said surface.
A further aspect of the present invention a method for preventing the adhesion of a soil to a hard surface comprising the application to the surface the composition according to the first or second aspect of the present invention.
These surface adhesion modifying compositions can comprise additional ingredients, such that they can clean the surface to which they are applied as well as leaving a coating or layer which aids in subsequent cleaning of the surface. These compositions can aid cleaning via any conventional means, including wiping with a wet cloth, rinsing with water, cleaning with a hard surface cleaner, cleaning the surface in an automatic dishwasher or via hand in a sink or basin with a hand dishwashing composition.
All parts, percentages and ratios used herein are expressed as percent weight unless otherwise specified. All documents cited are, in relevant part, incorporated herein by reference.
DETAILED DESCRIPTION OF THE INVENTION
As it was stated previously the compositions of the present invention are surface adhesion modifying compositions, which comprise a film forming polymer and a release aid, wherein said film forming polymer and said release aid are present in a weight ratio of from about 1:20 to about 20:1, preferably from about 1:10 to about 10:1, and said composition is without an oily or greasy feel or touch when applied to a surface.
The second aspect compositions of the present invention are composition for providing non-stick properties to a hard surface wherein said composition when applied to said surface lowers the adhesion of a soil to said surface such that the adhesion force of the soil to said surface is less than the cohesion, that is internal within the soil, force of the soil according to the adhesion test and further said composition has a non-greasy feel when applied to said surface. It is preferred that the composition comprises a surface adhesion lowering additive and an adjunct. Suitable surface adhesion lowering additives are lecithin, nonionic surfactants, waxes, fatty acid metal soaps, fatty esters, fatty amines, fatty amides, fatty acids, fatty alcohols, polyolefins, silicones, fluropolymers, polyvinyl alcohol, cellophane, fluorinated fatty acids and mixtures thereof.
Examples of suitable adhesion test for determining if the forces of cohesion are greater than the forces of adhesion can be found in tests such as ASTM D2919, ASTM D3528 and related methods referred to or described therein. Preferred film forming polymers include ethylcellulose, hydroxypropylcellulose, methylhydroxypropylcellulose, methyl ethyl cellulose, PVP, copolymer condensates of ethylene oxide and propylene oxide, and polyethylene glycol. Other suitable film forming polymers are Gums, such as Agar, Guar gum, Gum arabic, Gum arabic uses, Gum ghatti, Gum karaya, Hydroxypropyl guar gum, and Xanthan gum; Alginates, such as, Calcium alginate, Calcium-sodium alginate; Protein Film forming polymers, such as Pectin albumen, poly amino acids (e.g., poly lysine), gelatin; and Waxes, such as Carnuba wax. Exemplary of the film-forming agents of the invention are
Baker Keith Homer
El-Nokaly Magda
Kasturi Chandrika
Lin Peter Yau-Tak
Scheper William Michael
Sanders Kriellion A.
The Procter & Gamble & Company
Waugh Kevin L.
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