Surface adhesion modifying compositions

Details Surface adhesion modifying compositions Surface adhesion modifying compositions

2001-05-14

2003-02-11

Sanders, Kriellion A. (Department: 1714)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S035000, C428S532000

Reexamination Certificate

active

06518337

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 visible 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., 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 food 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 cookware 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 hard tough food soils.
SUMMARY OF THE INVENTION
It has now been surprisingly found that a surface adhesion modifying composition has been discovered, 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. Furthermore, these compositions entirely comprise food safe materials, or materials which are Generally Recognized As Safe, or G.R.A.S. materials. This means that these compositions are both safe and suitable for direct application to food work surfaces, such as cutting boards, sinks, and kitchen counter tops, as well as direct food contact surfaces, such as, plates, and silverware.
The compositions of the present invention are surface adhesion modifying compositions, which comprise a toxicologically-acceptable film forming polymer and a toxicologically-acceptable 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 food-contacting surfaces comprising a toxicologically-acceptable film forming polymer and a toxicologically-acceptable 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 has a non-greasy feel when applied to a surface.
In a third aspect, the present invention is also directed to methods for rendering a food-contact surface non-stickable comprising depositing a composition comprising a toxicologically-acceptable film forming polymer and a toxicologically-acceptable 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 has a non-greasy feel when applied to a surface.
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 toxicologically-acceptable film forming polymer and a toxicologically-acceptable 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 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 film forming polymer may be any film forming polymer which is a food acceptable material. Preferred film forming polymer:; 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 the following, non-toxic, food grade, commercially available, film-forming agents: Natrosol.RTM. (nonionic water-soluble hydroxyethylcellulose from Aqualon, Wilmington, Del.); Methocel.RTM. (methyl hydroxypropylcellulose made from cellulose and propylene oxide and available from Dow Chemical); Bermocoll E.RTM. (non-ionic, water soluble ethyl hydroxyethylcellulose from Akzo Nobel. The preferred film forming agents are Methocel.RTM. E50 LV, Methocel.RTM. K1
00
, Methocel.RTM. F50, Natrosol.RTM. 250KR, Bermnocoll E:.RTM.351 FQ, Bernocoll E.RTM.411 FQ, and Bernocoll E.RTM.320 FQ.
It is preferred that the film forming polymer present in the composition in the amount of from about 0.1% to about 50%, more preferably from about 0.5% to about 25%, even more preferably from about 1% to about 15% by weight of the composition.
Release agents are widely used in both the manufacturing areas and in the production and processing of foods. The gene

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