Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Biocides; animal or insect repellents or attractants
Reexamination Certificate
1999-05-27
2001-02-06
Dodson, Shelley A. (Department: 1616)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Biocides; animal or insect repellents or attractants
C424S065000, C424S401000, C424S404000, C424S443000, C514S944000
Reexamination Certificate
active
06183766
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to compositions and methods of sanitizing and moisturizing skin surfaces.
BACKGROUND OF THE INVENTION
Today's consumers are well acquainted with the notion of germs and germ transmission. Daily, people come into contact with germs at eating establishments, the gym, while changing diapers or using portable toilet facilities (e.g., portapotties). Once in contact with human hands, these germs (i.e., micro-organisms such as bacteria, fungus and/or viruses) are quickly passed from individual to individual and, thus, contribute to the spread of contagious and/or infectious diseases. One of the best and easiest ways of preventing such germ and/or disease transmission is by routinely and conscientiously washing one's hands. Recognizing the inconvenience or impossibility of such hand washing under certain traveling conditions and/or time constraints, a number of manufacturers have introduced hand sanitizing products which sanitize skin surfaces without the need for water and/or towels.
Although current hand sanitizing products kill the germs associated with such routine activities as changing diapers or handling exercise equipment, they can fail at adequately moisturizing the skin. Attempts at providing such moisturization have involved the use of lipophilic materials such as petrolatum. However, skin compositions incorporating such materials typically leave the skin feeling greasy or heavy. The present inventors have found that skin sanitizing compositions comprising lipophilic moisturizing agents and a degreasing agent provide excellent moisturization with improved skin feel.
Therefore, an important aspect of the present invention is to provide skin sanitizing compositions providing moisturization and improved skin feel.
Another aspect of the present invention is to provide skin sanitizing compositions comprising lipophilic moisturizing agents and a degreasing agent.
One other aspect of the present invention is to provide instant, hand sanitizing compositions comprising lipophilic moisturizing agents and a degreasing agent selected from the group consisting of select silicones, wax materials having a melting point above about 20° C., powders, fluorochemicals and mixtures thereof.
These and other aspects will become readily apparent from the detailed description which follows.
SUMMARY OF THE INVENTION
The compositions of the present invention relates to skin sanitizing compositions, comprising:
a.) an effective amount of sanitizing agent to kill or reduce the growth of microorganisms, the sanitizing agent comprising from about 40% to about 99% by weight of the composition of alcohol antiseptic;
b.) from about 0.1% to about 20% of a lipophilic skin moisturizing agent;
c.) an effective amount of a degreasing agent selected from the group consisting of:
i.) silicones selected from the group consisting of nonvolatile silicones having a viscosity of at least about 15,000 centipoise, silicone elastomer, silicone elastomer/volatile silicone blends, silicone elastomer
onvolatile silicone blends, nonvolatile/volatile silicone blends and mixtures thereof;
ii.) wax materials soluble in the alcohol antiseptic and having a melting point greater than about 20° C.;
iii.) powders;
iv.) fluorochemicals; and
v.) mixtures thereof;
d.) optionally, from 0 to about 10% of thickener;
e.) optionally, from 0 to about 15% of humectant;
f.) optionally, from 0 to about 1% of perfume; and
g.) from about 0 to about 60% water.
The skin sanitizing compositions of the present invention are suitable for use in leave-on or rinse-off products.
The present invention further relate to methods of using the skin sanitizing compositions.
DETAILED DESCRIPTION OF THE INVENTION
The skin sanitizing compositions of the present invention can comprise, consist of, or consist essentially of the essential elements and limitations of the invention described herein, as well any of the additional or optional ingredients, components, or limitations described herein.
All percentages, parts and ratios are based upon the total weight of the personal cleansing compositions of the present invention, unless otherwise specified. All such weights as they pertain to listed ingredients are based on the active level and, therefore, do not include carriers or by-products that may be included in commercially available materials, unless otherwise specified.
By the term “alcohol antiseptic” as used herein, means an alcohol (or combination of alcohols) which is effective, at the concentration employed, to kill microorganisms, for example, bacteria, with which it comes in contact.
By the term “instant” as used herein means the compositions of the present invention disinfect the skin area within 30 seconds, preferably 20 seconds without the need for soap and water.
The skin sanitizing compositions of the present invention, including the essential and optional components thereof, are described in detail hereinafter.
Essential Components
Alcohol Antiseptic
The compositions of the present invention also contain from about 40% to about 99%, more preferably from about 50% to about 80%, most preferably from about 55% to about 80% of an alcohol antiseptic or mixtures thereof. Examples of suitable alcohol antiseptics include, but are not limited to, ethanol, n-propanol and isopropanol and mixtures thereof. Preferred for use herein is ethanol.
Lipophilic Skin Moisturizing Agent
The skin sanitizing compositions of the present invention comprise from about 0.1% to about 20%, preferably from about 1% to about 15%, more preferably from about 2% to about 10%, by weight of the composition, of a lipophilic skin moisturizing agent/emollient.
The lipophilic skin moisturizing agents suitable for use herein typically have a consistency (k) which ranges from about 0.01 poise to about 10,000 poise, preferably from about 100 poise to about 1000 poise, more preferably from about 200 poise to about 800 poise, and most preferably from about 400 poise to about 500 poise.
In some cases, the lipophilic skin moisturizing agent can also desirably be defined in terms of its solubility parameter, as defined by
Vaughan in Cosmetics and Toiletries,
Vol. 103, p. 47-69, October 1988. A lipophilic skin moisturizing agent having a Vaughan solubility Parameter (VSP) of from 5 to 10, preferably from 5.5 to 9 is suitable for use in the moisturizing personal cleansing compositions herein.
A wide variety of lipid type materials and mixtures of materials are suitable for use as the lipophilic skin moisturizing agents in the personal cleansing compositions of the present invention. Preferably, the lipophilic skin conditioning agent is selected from the group consisting of hydrocarbon oils and waxes, silicones, fatty acid derivatives, cholesterol, cholesterol derivatives, di- and tri-glycerides, vegetable oils, vegetable oil derivatives, liquid nondigestible oils such as those described in U.S. Pat. No. 3,600,186 to Mattson; Issued Aug. 17, 1971 and U.S. Pat. Nos. 4,005,195 and 4,005,196 to Jandacek et al; both issued Jan. 25, 1977, all of which are herein incorporated by reference, or blends of liquid digestible or nondigestible oils with solid polyol polyesters such as those described in U.S. Pat. No. 4,797,300 to Jandacek; issued Jan. 10, 1989; U.S. Pat. Nos. 5,306,514, 5,306,516 and 5,306,515 to Letton; all issued Apr. 26, 1994, all of which are herein incorporated by reference, and acetoglyceride esters, alkyl esters, alkenyl esters, lanolin and its derivatives, milk-tri-glycerides, wax esters, beeswax derivatives, sterols, phospholipids and mixtures thereof. Fatty acids, fatty acid soaps and water soluble polyols are specifically excluded from our definition of a lipophilic skin moisturizing agent.
Hydrocarbon oils and waxes: Some examples are petrolatum, mineral oil micro-crystalline waxes, polyalkenes (e.g. hydrogenated and nonhydrogenated polybutene and polydecene), paraffins, cerasin, ozokerite, polyethylene and perhydrosqualene. Blends of petrolatum and hydrogenated and nonhydrogenated high molecular weight polybutenes where
Dodd Michael Thomas
Jakubovic David Andrew
Putman Christopher Dean
Sine Mark Richard
Thomas Cheyne P.
Allen George W.
Dodson Shelley A.
Elandjian Lucy
Lamm Marina
Little Darryl C.
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