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(12) United States Patent (10) Patent No.: US 8,940,343 B2 Chavan Et Al

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(12) United States Patent (10) Patent No.: US 8,940,343 B2 Chavan Et Al USOO8940343B2 (12) United States Patent (10) Patent No.: US 8,940,343 B2 Chavan et al. (45) Date of Patent: Jan. 27, 2015 (54) PERSONAL CARE COMPOSITION 2006/0275.241 A1 12/2006 Pado 2008.0102045 A1 5/2008 Shim ............................... 424,59 (75) Inventors: Mohan Vijaykumar Chavan, Mumbai 2009/0092690 A1 4/2009 Yang (IN); Deepak Ramachandra Mhasavade, Bangalore (IN); Ashish FOREIGN PATENT DOCUMENTS Anant Vaidya, Bangalore (IN) EP 1092414 4/2001 EP 1092414 A2 4, 2001 (73) Assignee: Conopco Inc., Englewood Cliffs, NJ EP 1640041 3, 2012 (US) WO WO2O0904O194 4/2009 (*) Notice: Subject to any disclaimer, the term of this OTHER PUBLICATIONS patent is extended or adjusted under 35 Luczaj. W. et al., “Antioxidativae properties of black tea', Preventive U.S.C. 154(b) by 164 days. Medicine, 40 (2005) pp. 910-918.* Vermeer et al., “Theaflavins from Black Tea, Especially Theaflavin (21) Appl. No.: 13/637,464 3-gallate, Reduce the Incorporation of Cholesterol into Mixed (22) PCT Filed: Apr. 1, 2011 Micelles', J toall of agriculturaAgricultural anarooand Food Chemistry,emistry, 2008, vovol. 56, (86). PCT No.: PCT/EP2011/055082 PCTso, Int E.T.E.W.E."tional Search Report in PCT lication PCT/EP2011. S371 (c)(1), International Preliminary Report on Patentability in (2), (4) Date: Nov. 16, 2012 PCTEP201 1055082, dated Aug. 20, 2012. Jayabalan et al., “Changes in content of organic acids and tea (87) PCT Pub. No.: WO2011/124528 polyphenols during kombuchatea fermentation', 2007, vol. 102, No. 1, pp. 392-398. PCT Pub. Date: Oct. 13, 2011 Lakenbrink et al., Flavonoids and Other Polyphenols in Consumer O O Brews of Tea and Other Caffeinated Beverages, Journal of Agric. (65) Prior Publication Data Food Chem 2000 482848, 2000, 2848-2852, 48. Starch et al., “Expanding Silicone Technologies for Sun Care: Per US 2013/OO52148A1 Feb. 28, 2013 formance Complements Aesthetics', Dow Corning, 1210712008, O O 1-21, Form No. 27/1303. (30) Foreign Application Priority Data Mintel, “Anti-Ageing Hand Treatment SPF 20”, Jun. 2010 (XP 002622098). Apr. 6, 2010 (IN) ......................... 1145AMUMA2010 Rice-Evans et al., “Antioxidant properties of phenolic compounds'. Trends in plant science reviews, Apr. 1997, vol. 2, No.4, pp. 152-159. (51) Eiko (2006.01) European Searh Report in Ep application EP10 173852 dated Feb. 15, 2011 with Written Opinion. A61O 1704 (2006.01) A6 IK 8/35 (2006.01) * cited by examiner A6 IK 8/49 (2006.01) A6 IK 8/894 (2006.01) Primary Examiner — Gina Justice A 6LX8/97 (2006.01) (74) Attorney, Agent, or Firm — Rimma Mitelman A61 O5/00 (2006.01) (52) U.S. Cl. (57) ABSTRACT CPC. A61O 1704 (2013.01); A61K 8/35 (2013.01); The present invention relates to a personal care composition. A61K 8/498 (2013.01); A61K 8/894 (2013.01); More particularly the present invention relates to stabilization A61K 8/97 (2013.01); A61 K 2800/52 (2013.01); of UVA sunscreen dibenzoylmethane derivatives or even A61O5/00 (2013.01) more particularly Parsol 1789TM (4-t-butyl-4'-methoxydiben USPC ............................................. 424/729; 424/59 Zoylmethane) in personal care compositions. It is an object of (58) Field of Classification Search the present invention to provide a personal care composition USPC . 424/729, 59 with relatively long photoprotection efficiency. It is another See application file for complete search history. object of the present invention to stabilize Parsol 1789 by use of a natural substance or materials derived from plants. Sur (56) References Cited prisingly the present inventors have found that theaflavin or black tea extract having high levels of theaflavin, can act as a U.S. PATENT DOCUMENTS photostabilizer for dibenzoylmethane derivatives or Parsol 5,306.486 A 4, 1994 McCook 1789TM. 5,952,391 A 9/1999 Gers-Barlag 6,024,944 A 2, 2000 Hansenne 13 Claims, No Drawings US 8,940,343 B2 1. 2 PERSONAL CARE COMPOSITION form of an oil-in-water emulsion, the emulsion containing taurine and at least one linear primary fatty or wax alcohol TECHNICAL FIELD having an alkyl chain length of 20-40 carbon atoms. Examples are disclosed in this patent publication where The present invention relates to a personal care composi dibenzoylmethane Sunscreens and Kombucha are present in tions. More particularly, the present invention relates to skin care compositions. Kombucha is a fermented tea bever improving the stability of UVA sunscreen dibenzoylmethane age produced by fermenting Sugared black tea with tea fungus derivatives or even more particularly Parsol 1789TM (4-t- (Food Chemistry, 102 (2007)392-398). Kombucha is gener butyl-4'-methoxydibenzoylmethane) in personal care com ally available from Sederma under the brandname Kom positions. 10 buchkaTM. Kombucha or KombuchkaTM is usually added in skin care composition at about 1 to 3% w/w. Being a black tea BACKGROUND OF THE INVENTION extract based product, Kombucha typically comprises from about 1% to a maximum of 2.8% theaflavin. Thus such skin In today's polluting world and outdoor lifestyle most con care compositions comprising Kombucha generally comprise Sumers want to protect their skin, hair and scalp from harmful 15 0.01 to a maximum of 0.09% w/w theaflavin. The present ultraviolet rays emitted by Sun. That makes skin protection inventors have determined that the benefits of the present sector very important for consumer goods companies. invention cannot be obtained by inclusion of such low Consumers from different parts of the world have different amounts of theaflavin characteristics of their skin. This is attributed to their genetic Surprisingly, the present inventors have found that theafla structure and geographical conditions. But invariably almost Vin or black tea extract having higher levels of theaflavin, can all consumers from different part of the world want to protect act as a photostabilizer for dibenzoylmethane derivatives or their skin, hair and scalp from harmful UV rays while expos Parsoll-1789T.M. Aqueous extract of black tea typically con ing themselves to Sunlight. tains a minimum of 0.1 to a maximum of about 2.8% w/w There are several ways by which consumers may obtain theaflavin and in rare cases up to 3% w/w theaflavin. Most photoprotection of skin from sunlight especially from UV 25 black tea extracts contain theaflavin from 1 to 2% w/w (Ver radiation. Sunscreens/Sunblocks are generally used for this meer et al., J. Agric. Food Chem, 56, 12031-36 (2008)). purpose. Sunscreens are generally organic molecules that absorb the UV radiation and emit the energy in a different OBJECTS OF THE INVENTION form, for instance in the visible range of the spectrum or in the form of heat, thereby protecting the skin againstirritation and 30 It is an object of the present invention to provide a personal Sunburn. Sunscreens are generally Small organic molecules. care composition with relatively stabilized Parsol 1789. Similarly Sunblocks help to protect the skin against pos It is another object of the present invention to provide a sible irritation and Sunburn. These Sunblocks generally com personal care composition with relatively long photoprotec prise inorganic particulates (like ZnO, TiO) that reflect the tion efficiency. incident UV-visible rays thus protecting the skin. 35 It is yet a further object of the present invention to stabilize Formulations using these molecules in the form of a cream, Parsol 1789 by use of a natural substance or materials derived a lotion, gel, or spray are widely known in the industry. from plants. People have also tried to use other natural substances (like green tea extract or other herbs extracts) alone or along with SUMMARY OF THE INVENTION a chemical Sunscreen for effective photoprotection of skin. 40 One of these chemical sunscreen is a derivative of diben Accordingly the present invention provides a personal care Zoylmethane which is known as 4-t-butyl-4'-methoxydiben composition comprising: Zoylmethane sold as Parsol 1789TM (or AvobenzoneTM), is a i) a dibenzoylmethane derivative; well known UVA Sunscreen used in personal care composi ii) 0.1 to 30% by weight theaflavin; and, tion. The problem associated with this sunscreen is its rela 45 iii) a cosmetically acceptable base. tively unstable nature. Efforts have been made to add some In another aspect the present invention provides a compo external molecule, like OctocryleneTM, to improve stability of sition according to the invention for photoprotection of Parsol 1789 in formulations. Investigations are ongoing human skin. throughout the world to find other alternatives to improve stability and the photoprotection efficiency of Parsol 1789TM. 50 DETAILED DESCRIPTION OF THE INVENTION So there is a need to develop a personal care composition with improved stability of dibenzoylmethane derivative or These and other aspects, features and advantages will ParSO1 1789TM. become apparent to those of ordinary skill in the art from a U.S. Pat. No. 5,306,486 (McCook et al., 1994) describes a reading of the following detailed description and the cosmetic composition including green tea and a Sunscreen 55 appended claims. For the avoidance of doubt, any feature of compound which is effective to at least partially block ultra one aspect of the present invention may be utilised in any violet radiation from harming human skin. other aspect of the invention. The word “comprising is US 2006/0275241 (Padlo et al., 2006) describes a cosmetic intended to mean “including” but not necessarily “consisting towelette product which includes a water-insoluble substrate of or “composed of. It is noted that the examples given in and cosmetic composition in contact with the Substrate. The 60 the description below are intended to clarify the invention and composition includes a copolymer structured from in part a are not intended to limit the invention to those examples per vinyl ester of a C-Co acid and a tea extract delivered in a se.
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