Drug – bio-affecting and body treating compositions – Anti-perspirants or perspiration deodorants
Reexamination Certificate
2001-08-03
2002-09-17
Dodson, Shelley A. (Department: 1616)
Drug, bio-affecting and body treating compositions
Anti-perspirants or perspiration deodorants
C424S078020, C424S078080, C424S400000, C424S401000
Reexamination Certificate
active
06451295
ABSTRACT:
FIELD OF THE INVENTION
The use of polyamides in cosmetic compositions, especially antiperspirants and/or deodorants, has certain advantages, especially with regard to clarity. It has been difficult, however, to obtain satisfactory structural integrity for prolonged periods of time with such compounds. By the use of selected types of polyamides, products of this invention are obtained which provide clear products with improved structural stability and integrity.
BACKGROUND OF THE INVENTION
The present invention is directed to improved cosmetic compositions formed with a specific group of polyamide gelling agents previously described in (1) U.S. Pat. No. 6,051,216 (WO 99/06473); (2) U.S. Provisional patent application No. 60/229,444, filed on Aug. 31, 2000; and (3) a second application based on (2) as a continuation-in-part case, referenced as as Ser. No. 09/922,091 and which is being filed on the same date as this patent application, all of which are incorporated by reference herein in their entirety.
While a number of references have disclosed polyamides as a class of compounds, it has been found that certain polyamides containing siloxane portions in the acid component may be used to form cosmetic compositions with enhanced structural properties.
Cosmetic compositions (for example, a solid cosmetic composition, such as a gel, soft-solid or semi-solid (cream), or stick), may be made with a base composition containing at least one silicone fluid (for example, silicone liquids such as silicone oils) which is thickened using a siliconized polyamide as a gelling agent; a carrier in which cosmetically active materials are incorporated; and at least one active ingredient to provide the activity for such cosmetic composition. Particular embodiments of the present invention include deodorant and antiperspirant compositions (and base compositions therefor), in which the cosmetically active ingredient is a deodorant active material and/or an antiperspirant active material. Embodiments of the present invention are not limited, however, to such antiperspirant and/or deodorant compositions, and are also directed to other cosmetic compositions containing other cosmetically active ingredients, such as sun protection compositions containing sun-screen agents as the active material.
Preferred embodiments of formulated cosmetic products are directed to cosmetic compositions which are transparent (clear), including solid transparent (clear) compositions, especially transparent (clear) deodorant and/or antiperspirant compositions which are sticks or gels. While selected embodiments of cosmetic compositions made with the polyamides described are preferably clear or transparent, the cosmetic compositions need not, however, be clear or transparent, and can be translucent, or opaque.
The selected siloxane-based polyamides and mixtures thereof are used as gelling agents in cosmetic products, especially antiperspirants and/or deodorants. The compositions made with the siloxane-based polyamides have improved application and cosmetic properties (including reduced tackiness and stickiness), and, more preferably, have improved clarity and low to no white residue properties. They also exhibit improved stick integrity as compared to earlier efforts with such compositions.
Antiperspirant products are well known in the art. Antiperspirant products have appeared in the marketplace in various dosage forms, such as sticks, gels, roll-ons, aerosols and creams. Generally, these dosage forms include a solution of the active ingredient in a solvent, a suspension of the active ingredient in a non-solvent, or a multi-phase dispersion or emulsion in which a solution of the active ingredient is dispersed in some continuous phase or in which the solubilized active ingredient constitutes a continuous phase.
Of the above-referred-to dosage forms, the roll-on is an example of a liquid form composition, the stick form is an example of a solid form composition, and the gel form is structured liquid which may or may not be a solid (for example, under some circumstances gels can flow). The stick form can be distinguished from a gel on the basis that in a stick the formulated product can maintain its shape for extended time periods outside the package (allowing for some shrinkage due to solvent evaporation), while a gel cannot so maintain its shape. Adjustment of amounts of gelling or thickening agents such as bentones, fumed silica, polyethylene, stearyl alcohol or castor wax, can be used in order to form a gel or stick.
Gels, pastes and creams (which are also known as soft-solids or semi-solids) can be suitably packaged in containers which have the appearance of a stick, but which dispense through apertures (for example, slots or pores) on the top surface of the package. These products have been called soft sticks or “smooth-ons”. These products hereinafter are generically called “gels”. Reference is made to U.S. Pat. No. 5,102,656 to Kasat, U.S. Pat. No. 5,069,897 to Orr, and U.S. Pat. No. 4,937,069 to Shin, each of which discloses such gels, including physical characteristics thereof such as viscosity and hardness. The contents of each of these three U.S. Patents are incorporated herein by reference in their entirety.
A representative composition which can be dispensed through apertures is described in U.S. Pat. No. 5,102,656 to Kasat. This disclosed composition is a creamy, heterogeneous anhydrous antiperspirant product containing, in percent by weight, of the total weight of the composition, 30%-70% of a volatile silicone as a carrier, 7-30% of a suitable gelling agent or agents, and about 12-30% of a physiologically acceptable antiperspirant agent. This patent discloses that the gelling agent can be any of a number of materials, including, for example, hydrogenated vegetable oil, hydrogenated castor oil, fatty acids having from 14 to 36 carbon atoms, beeswax, paraffin wax, fatty alcohols having from 14 to 24 carbon atoms, polyethylene and the like.
Clear or translucent antiperspirant gels (which have been dispensed from containers having the appearance of a stick) have been marketed, consisting of viscous, high internal phase emulsions. These gels exhibit some advantages but these emulsions also suffer from various disadvantages, including often requiring the use of ethanol to achieve desired aesthetics. In connection with these emulsions, see U.S. Pat. No. 4,673,570 to Soldati and PCT (International Application) Publication No. WO 92/05767.
U.S. Pat. No. 5,120,531 to Wells, et al discloses rinse-off hair conditioner and styling compositions providing a gel-network thickened vehicle for the styling polymer and solvent. This patent discloses various siloxanes as the conditioning agent including polydiorganosiloxanes having quaternary ammonium-substituted groups attached to the silicon, and polydiorganosiloxanes having silicone-bonded substituents which are amino-substituted hydrocarbon groups.
U.S. Pat. No. 5,500,209 discloses a gel or stick which includes active deodorant and/or antiperspirant ingredients, a polyamide gelling agent, and a solvent for the polyamide gelling agent, in which the gel or stick composition can be clear or translucent. This patent discloses that the polyamide gelling agent is soluble in a cosmetically acceptable solvent at elevated temperatures, and solidifies (gels) upon cooling; acceptable solvents are disclosed as including various alcohols, including various glycols. While the polyamide-containing stick or gel disclosed in the aforementioned patent contains desirable properties in connection with stability of the composition, (particularly in the presence of acidic antiperspirant active materials, and in providing clear or translucent gel or stick compositions) such formulas may result in tackiness and stickiness both upon and after application to the skin.
Addressing this problem of tackiness and stickiness in connection with cosmetic compositions utilizing a polyamide gelling agent, U.S. patent application Ser. No. 08/426,672, now U.S. Pat. No. 5,603,925, the contents of which are incorpora
Cai Heng
Fan Aixing
Urrutia-Gutierrez Adriana
Colgate-Palmolive Company
DeCesare James
Dodson Shelley A.
Miano Rosemary M.
LandOfFree
Clear antiperspirants and deodorants made with... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Clear antiperspirants and deodorants made with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Clear antiperspirants and deodorants made with... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2908480