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(19) TZZ _T (11) EP 2 298 274 A1 (12) EUROPEAN PATENT APPLICATION published in accordance with Art. 153(4) EPC (43) Date of publication: (51) Int Cl.: 23.03.2011 Bulletin 2011/12 A61K 8/44 (2006.01) A61K 8/88 (2006.01) A61Q 1/04 (2006.01) A61Q 1/10 (2006.01) (2006.01) (2006.01) (21) Application number: 08874283.8 A61Q 1/12 A61Q 5/06 A61Q 15/00 (2006.01) A61Q 17/04 (2006.01) (2006.01) (22) Date of filing: 10.12.2008 A61Q 19/00 (86) International application number: PCT/JP2008/072382 (87) International publication number: WO 2009/139092 (19.11.2009 Gazette 2009/47) (84) Designated Contracting States: (72) Inventors: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR • YOSHIDA, Mari HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT Narita-shi RO SE SI SK TR Chiba 287-0225 (JP) Designated Extension States: • KOKEGUCHI, Yuki AL BA MK RS Narita-shi Chiba 287-0225 (JP) (30) Priority: 12.05.2008 US 52311 P 14.05.2008 JP 2008127290 (74) Representative: Nuss, Laurent et al Cabinet Nuss (71) Applicant: Kokyu Alcohol Kogyo Co., Ltd. 10, rue Jacques Kablé Narita-shi, Chiba 2870225 (JP) 67080 Strasbourg Cedex (FR) (54) COSMETIC MATERIAL HAVING EXCELLENT FEELING UPON APPLICATION AND STORAGE STABILITY, AND PROCESS FOR PRODUCTION THEREOF (57) Conventional cosmetic materials cannot pro- and storage stability; and a process for producing the vide cosmetic products having both excellent feeling up- cosmetic material. The cosmetic material is character- on application and satisfactory storage stability. Namely, ized by comprising an aminoacid-type oil-gelling agent conventional cosmetic products having no sticky feeling and a polyamide resin. The cosmetic material can pro- or the like and having excellent feeling upon application vide a cosmetic product having both excellent feeling up- are generally poor in storage stability. Thus, provided on application and satisfactory storage stability. are: a cosmetic material which can provide a cosmetic product having more excellent feeling upon application EP 2 298 274 A1 Printed by Jouve, 75001 PARIS (FR) EP 2 298 274 A1 Description [0001] The present invention relates to cosmetics having excellent usability and storage stability and a method for making the same. In more detail, the present invention relates to cosmetics having excellent usability and storage stability 5 comprising an amino acid oil gelling agent and a polyamide resin, and a method for making the same, etc. [0002] As to performances of cosmetic products, an importance as to not only makeup effect, but also usability is increasing, whereas such usability is influenced by the kind of a cosmetic used. For example, in order to improve usability of the cosmetic product, it has been reported that natural polysaccharides or cationized natural polysaccharides are used (JP-A-2008-50305). 10 [0003] Further, it has also been reported that dibutyl ethylhexanoyl glutamide and dibutyl lauroyl glutamide that are oil gelling agents are used in cosmetics for the purpose of a stable foam, etc. (JP-A-2008-31170, JP-A-2005-533105, JP-A-2004-536083 and JP-A-2008-19200). [0004] Moreover, JP-A-2005-298635 discloses a gel-like composition, wherein a specified amino acid derivative oil gelling agent is blended in order to uniformly mix the oil gelling agent into an oily base under the condition of a relatively 15 low temperature. [0005] Further, as to an oil gelling agent used for a cosmetic for the purpose of moisturizing effect, dextrin fatty acid esters, polysaccharide fatty acid esters, clay minerals modified with organic compounds, and 12-hydroxystearic acid, etc., are known (JP-A-2007-246453). [0006] Moreover, U.S. Patent Publication No. 2006/0280763 and JP-B-7-98731 disclose a cosmetic blended with a 20 polyamide resin in order to improve gel strength and usability, etc. [0007] However, no above-described literature discloses a cosmetic comprising two ingredients of an amino acid oil gelling agent and a polyamide resin at the same time, and the oil gelling agent and the polyamide resin alone do not improve usability and storage stability of a cosmetic in combination. [0008] Also, U.S. Patent Publication No. 2005/0191327 discloses the invention relating to a cosmetic product com- 25 position comprising two different heteropolymers, and describes a composition comprising an amide-terminated polya- mide resin and an ester-terminated polyamide resin to which dibutyl lauroyl glutamide is blended as a cosmetic ingredient used commonly. However, the object of the invention is to improve shape storage stability and mechanical strength of the cosmetic product composition, therefore the object and effect of the invention are completely different from the present invention, and there is no disclosure at all as to what action and effect is produced by the cosmetic comprising 30 an amino acid oil gelling agent and a polyamide resin. [0009] As above, at present, there is no cosmetic product comprising two ingredients of an amino acid oil gelling agent and a polyamide resin at the same time, and provided with sufficient storage stability together with excellent usability, and no cosmetic capable of manufacturing such a cosmetic product. That is, it is an actual state that a cosmetic product having sense of non-tackiness etc. and excellent usability has poor storage stability. 35 [0010] Therefore, developments of a technology and a product for realizing a cosmetic having more excellent usability and storage stability in combination are required strongly. [0011] It is an object of the present invention to provide a cosmetic having more excellent usability and sufficient storage stability in combination and a method for making the same, etc. [0012] In order to solve the above-described problems, the present inventors have found that usability and storage 40 stability of a cosmetic product that is a shaped product are improved as compared to a cosmetic that comprises each of the ingredient alone by using a certain oil gelling agent and a certain polyamide resin in combination, and as a result of a further intensive research, completed the present invention. [0013] That is, the present invention relates to a cosmetic comprising an amino acid oil gelling agent and a polyamide resin. 45 [0014] Also, the present invention relates to the above-described cosmetic, wherein the amino acid oil gelling agent is one or more amino acid derivatives represented by the following general formula (1) 50 55 2 EP 2 298 274 A1 5 10 15 1 2 wherein, R and R represent a C1 to C10 linear chain or branched chain alkyl group which may be the same or different 3 from each other, R represents a C1 to C26 linear chain or branched chain alkyl group, n represents an integer of 1 or 2. 20 [0015] Further, the present invention relates to the cosmetic, wherein the amino acid oil gelling agent is one or more selected from dibutyl ethylhexanoyl glutamide and dibutyl lauroyl glutamide. [0016] Also, the present invention relates to the cosmetic, wherein the polyamide resin is one or more selected from an amide-terminated polyamide resin and an ester-terminated polyamide resin represented by the following general formula (2) 25 30 35 1 2 1 1 wherein, X represents -N(R ) group or -OR group, wherein R represents a C8 to C22 linear chain or branched chain alkyl group which may be the same or different from each other, R2 represents a dimer acid residue, R3 represents an ethylenediamine residue, n represents an integer from 2 to 4. [0017] Further, the present invention relates to the above-described cosmetic, further comprising one or more oil 40 agents. [0018] Also, the present invention relates to a cosmetic product comprising any of the above-described cosmetic. [0019] Further, the present invention relates to the above-described cosmetic product, selected from the group con- sisting of an antiperspirant, a cream, a lip gloss, an eye shadow, a mascara, a lip stick, a hair gel, a hair wax, a hair stick, a hair cream, a sun protection product, a foundation, an eye color. 45 [0020] Also, the present invention relates to a method for making any of the cosmetic described above. [0021] Further, the present invention relates to a method for increasing usability and storage stability of a cosmetic, wherein the method comprises the step of mixing one or more amino acid oil gelling agents and one or more polyamide resins. [0022] Moreover, in the case of referring to a cosmetic comprising an amino acid oil gelling agent and a polyamide 50 resin in the present invention, a cosmetic with a certain composition is excluded comprising one GP-1 (dibutyl lauroyl glutamide), and two of SYLVACLEAR A200V (an amide-terminated polyamide resin) and UNICLEAR 100VG (an ester- terminated polyamide resin) at the same time. Therefore, the cosmetic or the cosmetic product of the present invention does not comprise one GP-1 (dibutyl lauroyl glutamide), and two of SYLVACLEAR A200V (an amide-terminated polya- mide resin) and UNICLEAR 100VG (an ester-terminated polyamide resin) at the same time. 55 [0023] As functions generally required for oil gelling agents used for a cosmetic, (1) functions relating to storage stability, (2) functions relating to sensuality, and (3) functions relating to vision etc. against the product is required, whereas as oil gelling agents satisfying each of the above-described functions (1) to (3), amino acid oil gelling agents such as dibutyl ethylhexanoyl glutamide and dibutyl lauroyl glutamide are mentioned, all of which include an amino acid 3 EP 2 298 274 A1 residue. [0024] Amino acid oil gelling agents such as dibutyl ethylhexanoyl glutamide and dibutyl lauroyl glutamide, etc.