Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Cosmetic – antiperspirant – dentifrice
Reexamination Certificate
2000-04-12
2002-08-13
Dees, Jose′ G. (Department: 1616)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Cosmetic, antiperspirant, dentifrice
C424S489000
Reexamination Certificate
active
06432421
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to emollient compositions for use in cosmetic, personal care and pharmaceutical preparations and more particularly to such emollient compositions partially comprising polyethylene, petrolatum, and octyl palmitate in a generally solid spherical form (beads) and processes for their preparation.
BACKGROUND
Emollients tend to be bland, fatty, oleaginous substances which may be applied locally to the skin, mucous membranes, or abraded tissue. One of the benefits of emollients is their ability to exclude water-soluble irritants, air, and air-borne bacteria when a layer of emollient is present. At the present, there are numerous ingredients which function as emollients in a wide variety of products, and which ingredients may act in subtly different ways. For example, certain emollients sit on the surface of the skin and serve to impede water loss from the skin. Such ingredients are generally comprised of large molecules that form a hydrophobic barrier to help prevent water from leaving the surface of the kin. Examples of such emollients are lanolin, mineral oil, silicon derivatives and petroleum jelly.
A chief use of emollients is to provide vehicles for lipid-soluble drugs (as in balms, ointments and alcohol-based liniments). Although it has often been suggested that such emollient vehicles facilitate the transport of such drugs through the skin, it has been found that when the oil:water partition coefficient is greater that 1.0, the penetration of lipid-soluble drugs tends to be impeded. Emollient substances are commonly employed in cleansing and antiphlogistic creams and lotions. Compound ointment bases, creams, and other medical applications are also general areas of use for emollients. Amongst the more common emollient materials are castor oil, corn oil, cottonseed oil, rose water ointment, apricot kernel oil, avocado oil, grape seed oil, hazelnut oil, olive oil, sesame oil, theobroma oil, almond oil, myristyl alcohol, and recently other natural oils such as jojoba oil.
Fatty alcohols are also used as emollients. They are said to be less sticky and less heavy that many other fatty materials, such as the fatty acids, and are frequently used to improve the viscosity and stability of lotions and creams. They also have utility in reactive hair dying and perming products. Examples of fatty alcohols that find use in the field of cosmetics and personal care products are cetyl alcohol, lauryl alcohol, stearyl alcohol and oleyl alcohol.
Additional examples of emollients are fatty esters. One of the best qualities of fatty esters is that they do not feel as oily to the touch as some other types of emollient fatty ingredients. Examples include isopropyl palmitate, isopropyl myristate and glyceryl stearate.
An important emollient is jojoba oil that is derived from the seed of the species
Simmondsia chinensis.
Jojoba oil is seed oil with excellent skin feel. The oil is composed almost exclusively of wax esters, with little or no triglycerides present. A major portion of the production of jojoba oil is used by the cosmetic industry as an emollient in a variety of products.
One of the problems with typical emollients is that the emollient itself provides a wet or oily feel to the applied areas. This can lead to an uncomfortable feeling or appearance to the user, which is very important in the cosmetic and pharmacological industry. An additive for cosmetic, personal car and topical treatment (medicament) products has been marketed under the name of “Confetti”™ AL with allantoin, and ConfettiT™ EA, MT, PA, RG and SG (identifying the color of the material). This material is advertised as decorative microcapsules that contribute beneficial moisturizing and delivery of alcohol soluble ingredients to the skin. Confetti is advertised as having a good balance of structural integrity and rub-in characteristics, rubbing into the skin completely without any extra pressure. The Material Safety Data Sheets (MSDS) on ConfettiT™ products identifies them as containing a natural oil (e.g., coconut oil, tocopheryl acetate, retinyl palmitate), propylene glycol, synthetic beeswax, petrolatum, allantoin, PVM/MA Decadiene crosspolymer and benzophenone, as well as pigments and/or dyes.
SUMMARY OF INVENTION
The present invention describes a very effective emollient composition for use in personal care, cosmetic and pharmaceutical products and a novel method of producing that composition. The composition is essentially solid at room temperature and can be provided in various shapes and sizes (especially as spheres). The composition can be produced from a combination of polyethylene, petrolatum and octyl palmitate. Tints, fragrances and various other additives may be added to the composition to provide additional functionality and benefits.
The emollient compositions according to the present invention preserve an excellent skin feel and also increase the range of applications for cosmetic compositions by providing an emollient with a novel composition. Furthermore, when provided in a solid feel form, such as spherical particles, the emollient composition of the present invention can provide a noticeable scrubbing or dermal abrasive action. The emollient compositions of the present invention comprise polyethylene, petrolatum and octyl palmitate as described herein. Preferably the amount of the polyethylene will be from about 5-30% by weight of the composition, the amount of the petrolatum will be from about 0-60% by weight of the composition, and the amount of the octyl palmitate will be from 0-85% by weight of the composition, with any balance being the pigment or other additives. An especially preferred emollient composition will be as follows:
Ingredient
% by weight
Polyethylene
15
Petrolatum
35
Octyl Palmitate
50
Other emollients may be blended, mixed or dissolved with the basic emollient compositions described above.
The novel features that are considered characteristic of the invention are set forth with particularity in the appended claims. The invention itself, however, both as to its structure and its operation together with the additional object and advantages thereof will best be understood from the following description of the preferred embodiment of the present invention. Unless specifically noted, it is intended that the words and phrases in the specification and claims be given the ordinary and accustomed meaning to those of ordinary skill in the applicable art or arts. If any other meaning is intended, the specification will specifically state that a special meaning is being applied to a word or phrase. Likewise, the use of the words “function” or “means” in the Description of Preferred Embodiments is not intended to indicate a desire to invoke the special provision of 35 U.S.C. §112, paragraph 6 to define the invention. To the contrary, if the provisions of 35 U.S.C. §112, paragraph 6, are sought to be invoked to define the invention(s), the claims will specifically state the phrases “means for” or “step for” and a function, without also reciting in such phrases any structure, material, or act in support of the function. Even when the claims recite a “means for” or “step for” performing a function, if they also recite any structure, material or acts in support of that means of step, then the intention is not to invoke the provisions of 35 U.S.C. §112, paragraph 6. Moreover, even if the provisions of 35 U.S.C. §112, paragraph 6, are invoked to define the inventions, it is intended that the inventions not be limited only to the specific structure, material or acts that are described in the preferred embodiments, but in addition, include any and all structures, materials or acts that perform the claimed function, along with any and all known or later-developed equivalent structures, materials or acts for performing the claimed function.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
The present invention describes a very effective emollient composition for use in personal care, cosmetic and pharmaceutical products that can be produced from a combinatio
Brown James H.
Brown James S.
Dees Jose′ G.
George Konata M
International Flora Technologies Ltd.
The Halvorson Law Firm
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