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Chewing gum and confectionery compositions with encapsulated stain removing agent compositions, and methods of making and using the sameRelated Patent Categories: Drug, Bio-affecting And Body Treating Compositions, Chewing Gum TypeChewing gum and confectionery compositions with encapsulated stain removing agent compositions, and methods of making and using the same description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20060115434, Chewing gum and confectionery compositions with encapsulated stain removing agent compositions, and methods of making and using the same. Brief Patent Description - Full Patent Description - Patent Application Claims
RELATED APPLICATIONS [0001] This is a continuation-in-part application of prior pending U.S. application Ser. No. 10/058,448 now U.S. Pat. No. 6,479,071 which is a continuation-in-part application of prior pending U.S. application Ser. No. 09/947,876 filed Sep. 6, 2001 which is a continuation-in-part application of prior pending U.S. application Ser. No. 09/741,523 filed Dec. 20, 2000 which claims the benefit of Provisional Patent Application Ser. No. 60/188,554 filed Mar. 10, 2000. FIELD OF THE INVENTION [0002] The present invention is generally directed to chewing gum and confectionery compositions containing an effective amount of an encapsulated stain removing component selected from anionic and non-ionic surfactants and to processes of making the compositions in a manner which facilitates the release of the stain removing component. BACKGROUND OF THE INVENTION [0003] Tooth whitening or stain removing components are known to be added to dentifrice compositions such as toothpastes, mouthwashes, and the like. Such compositions include dicalcium phosphates, peroxides, percarbonates and the like such as disclosed in, for example, U.S. Pat. Nos. 5,256,402; and 5,824,291. [0004] The employment of surfactants including non-ionic surfactants is known for laundry detergent compositions. Such surfactants are disclosed, for example, in International Publication Nos. WO 92/06160 and WO 95/33034. The use of non-ionic surfactants in laundry detergent compositions is known to improve the effectiveness of such compositions against greasy/oily stains. [0005] U.S. Pat. No. 5,645,821 discloses an oral hygiene composition to clean and whiten teeth which includes water, gelling agent, anionic surfactant and a mixture of alkaline earth metal hydroxides and carbonates. WO 88/00463 discloses an oral composition for removing and/or preventing plaque and for removing stains which includes an oily compatible surfactant and at least one weight percent of a benzoic acid salt. The composition is also stated to contain a biocide such as chlorhexidine or derivative thereof. An exemplified surfactant is sodium lauryl sulfate and the composition is also stated to contain plasticizers including polyethylene glycol, glycerin and the like. The reference states that the composition may be used in the form of dentifrices, lozenges or chewing gum. [0006] Other chewing gum compositions and the active ingredient for removing stains disclosed therein include WO 99/43294 (chlorite ion); WO 99/27798 (a water-soluble product including sodium bicarbonate and encapsulated aspartame); Chinese Patent Document No. 1196235 (hydrogen peroxide); U.S. Pat. No. 5,824,291 (alkaline metal carbonate peroxyhydrates); WO 98/29088 (cysteine proteinase); WO 98/18339 (bone minerals, calcium triphosphate and/or hydroxyapatite); and U.S. Pat. No. 5,629,035 (alkaline metal bicarbonates). [0007] U.S. Pat. No. 4,952,407 discloses a gum composition containing a dental plaque removing agent in the form of glycerol monolaurate. The composition typically includes a high filler content wherein the filler is an inorganic material such as calcium carbonate, talc, sodium bicarbonate dicalcium phosphate and mixtures thereof. [0008] For coated chewing gum compositions, it is known to provide an active agent such as a medicament in the chewing gum coating and optionally in the core such as disclosed in WO 00/35296 and WO 00/35298. [0009] U.S. patent application Ser. No. 09/741,523 filed Dec. 20, 2000 of the Assignee herein covers a chewing gum and confectionery composition containing an anionic and/or non-ionic surfactant (e.g. sodium stearate) which may be present in the core, a coating including a centerfill product. [0010] Delivery systems for the delivery of various components of a chewing gum composition including encapsulation systems are disclosed in U.S. Pat. Nos. 4,569,852; 4,695,463; 4,981,698; 5,004,595; 5,266,335; and 5,679,389, as well as International Publication Nos. WO 98/23165; WO 00/35295; and WO 00/35298. Encapsulation systems for surfactant containing products are disclosed in U.S. Pat. Nos. 4,473,485; 4,597,885; and 5,385,737. [0011] Unlike toothpaste, mouthwash and other dentifrice compositions, gum compositions present unique problems in delivering agents. Chewing gum compositions typically comprise a water-insoluble gum base which provides the bulk to the gum composition but which invariably traps agents having compatibility with the gum base. Adding additional amounts of an agent is problematical because the same can have an adverse effect on the integrity, sensory and/or taste properties of the gum composition. [0012] It would therefore be a significant advance in the art of providing a stain removing agent for the cleaning of dental material including teeth if such stain removing agent could be effectively incorporated into a chewing gum composition and released therefrom during the chewing process in a manner which provides an effective amount of the stain removing agent. The chewing gum composition would then not only provide chewing satisfaction to the user, but would also provide a beneficial dental effect. [0013] Confectionery compositions are well known in the art. Such compositions include, for example, hard boiled candies, nougats, panning goods, gel confections, centerfill confections, fondants, and the like. Unlike chewing gum compositions which often remain in the mouth for several minutes and often quite longer, confectionery compositions tend to have a short life in the mouth because they dissolve relatively quickly upon chewing. Nonetheless, it would be of great benefit to provide confectionery compositions with an effective amount of a stain removing agent to provide such products to render them capable of providing a beneficial dental effect. SUMMARY OF THE INVENTION [0014] The present invention is generally directed to stain-removing chewing gum and confectionery compositions in which a stain removing material has been effectively incorporated therein so that a sufficient amount is available for a stain removing effect. [0015] In a particular aspect of the present invention, there is provided a stain-removing composition selected from a chewing gum composition and a confectionery composition comprising a stain removing effective amount of at least one stain removing agent selected from the group consisting of anionic and non-ionic surfactants, in which the stain removing agent has been encapsulated to enable an effective amount of the stain removing agent to be released from the composition. [0016] In accordance with one aspect of the present invention, there is provided a stain-removing chewing gum composition comprising a core and a coating comprised of at least one layer with at least one of the core and coating comprising a stain removing effective amount of at least one stain removing agent selected from the group consisting of anionic and non-ionic surfactants and mixtures thereof in an encapsulated form such as a granule. A method of removing stains by employing the chewing gum composition of the present invention is also disclosed. [0017] In a further aspect of the present invention there is provided a stain removing confectionery composition comprising a stain removing effective amount of at least one stain removing agent selected from the group consisting of anionic and non-ionic surfactants and mixtures thereof in an encapsulated form such as a granule. A method of removing stains by employing the confectionery compositions of the present invention is also disclosed. [0018] In a preferred form of the invention, the surfactants for both the gum and confectionery compositions are selected from the group consisting of medium and long chain fatty acid esters and salts, most preferably containing 14-20 carbon atoms, and especially sodium stearate and sodium palmitate and mixtures thereof, as well as a mixture of citric acid esters of mono and diglycerides. [0019] In a further preferred form of the invention, the active stain removing agent is encapsulated in a manner such as described in H. Menzi et al., U.S. Pat. No. 6,056,949, the entire content of which is incorporated herein by reference. Not only does encapsulation provide enhanced delivery of the stain-removing agent to dental surfaces but it also tends to mask the taste of the stain-removing agent which is a particular advantage when relatively large amounts of the stain-removing agent are used. DETAILED DESCRIPTION OF THE INVENTION Continue reading about Chewing gum and confectionery compositions with encapsulated stain removing agent compositions, and methods of making and using the same... 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