Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Cosmetic – antiperspirant – dentifrice
Reexamination Certificate
2001-06-15
2003-02-11
Krass, Frederick (Department: 1614)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Cosmetic, antiperspirant, dentifrice
C424S401000, C424S070100, C424S078030, C424S811000, C514S773000, C514S784000, C514S844000, C514S886000, C514S887000, C514S947000, C510S490000, C510S126000, C510S501000
Reexamination Certificate
active
06517846
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a cosmetic composition suitable for sensitive skin, dry skin, roughening skin or skin with atopic dermatitis, comprising an N-long chain acylamino acid or a salt thereof, which composition is excellent in foam breakage and feeling after its use.
2. Description of the Background Art
Inorganic salts and organic salts of N-long chain acylamino acids have bactericidal activity in addition to surface activity. Cleansing agents comprising these salts are mild to skin and have an excellent detergency, and thus are widely used as a main component of cleansing compositions (Japanese Published Examined Patent Application No. 38604/79, Japanese Published Examined Patent Application No. 83538/93 and Japanese Published Examined Patent Application No. 27720/85).
Among the salts of N-long chain acylamino acids used as cleansing agents, salts of N-long chain acylamino acids of a tertiary amide type are excellent in water-solubility, but are known to have the defects that much rinse is necessary for breaking the foam generated and that they give a slimy feeling. Salts of N-long chain acylamino acids of a secondary amide type are known to have disadvantages that the foam is not stable enough for cleansing and that they give a poor feeling after their use. To solve these problems, it is known to use an N-long chain acyldipeptide in combination with an N-long chain acylamino acid (Japanese Published Unexamined Patent Application No. 78693/93).
An N-acylglutamine is known to have hair-growing activity (Japanese Published Unexamined Patent Application No. 32726/94), melanin formation inhibiting activity (Japanese Published Unexamined Patent Application No. 157284/94) and cleansing activity (WO 97/03171).
Recently, the number of persons with sensitive skin, dry skin, roughening skin or the like, and that of patients with atopic dermatitis caused by allergic reaction or the like, have been remarkably increased. In persons with sensitive skin, dry skin, roughening skin or the like, or in patients with atopic dermatitis, the use of general cosmetics sometimes causes strong irritative feelings since their skins have become to be hypersensitive. Also, there is a possibility that surfactants or the like contained in cosmetics, soaps or the like may aggravate dermatitis in these persons or patients due to damaged cellular surfaces of their skins. Thus, development of low-irritative cosmetics, particularly those having a cleansing function, which can be used without anxiety even in the persons with sensitive skin, dry skin, roughening skin or the like, or in the patients with atopic dermatitis is demanded.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a cosmetic composition having effects suitable for sensitive skin, dry skin, roughening skin or skin with atopic dermatitis.
The present invention relates to the following (1) through (15).
(1) A cosmetic composition comprising one or more compounds selected from N-long chain acylamino acids represented by formula (I):
wherein n represents 1 or 2, and R represents a saturated or unsaturated hydrocarbon group having 5 to 23 carbon atoms [hereinafter referred to as Compound (I)]; and salts thereof.
(2) A cosmetic composition for skin selected from the group consisting of sensitive skin, dry skin, roughening skin and skin with atopic dermatitis which comprises one or more compounds selected from the N-long chain acylamino acids represented by formula (I) according to (1) as above and salts thereof.
(3) A cosmetic composition for sensitive skin comprising one or more compounds selected from the N-long chain acylamino acids represented by formula (I) according to (1) as above and salts hereof.
(4) A cosmetic composition for dry skin comprising one or more compounds selected from the N-long chain acylamino acids represented by formula (I) according to (1) as above and salts thereof.
(5) A cosmetic composition for roughening skin comprising one or more compounds selected from the N-long chain acylamino acids represented by formula (I) according to (1) as above and salts thereof.
(6) A cosmetic composition for skin with atopic dermatitis comprising one or more compounds selected from the N-long chain acylamino acids represented by formula (I) according to (1) as above and salts thereof.
(7) The cosmetic composition according to any one of (1) to (6) as above, wherein the N-long chain acylamino acid is N-lauroyl glutamine or an N-cocoylglutamine.
(8) The cosmetic composition according to any one of (1) to (7) as above, which has a cleansing function.
(9) A method for improving a condition of skin selected from the group consisting of sensitive skin, dry skin, roughening skin and skin with atopic dermatitis which comprises applying thereto an effective amount of cosmetic composition according to any one of (1) to (8) as above.
(10) A method for improving a condition of sensitive skin which comprises applying thereto an effective amount of cosmetic composition according to any one of (1) to (8) as above.
(11) A method for improving a condition of dry skin which comprises applying thereto an effective amount of cosmetic composition according to any one of (1) to (8) as above.
(12) A method for improving roughening skin which comprises applying thereto an effective amount of cosmetic composition according to any one of (1) to (8) as above.
(13) A method for improving a condition of skin with atopic dermatitis which comprises applying thereto an effective amount of cosmetic composition according to any one of (1) to (8) as above.
(14) A method of use of the cosmetic composition according to any one of (1) to (8) as above, wherein the composition is applied on skin selected from the group consisting of sensitive skin, dry skin, roughening skin and skin with atopic dermatitis.
(15) A method for treating skin selected from the group consisting of sensitive skin, dry skin, roughening skin and skin with atopic dermatitis comprising applying thereto a cosmetic composition according to any one of (1) to (8) as above.
DESCRIPTION OF PREFERRED EMBODIMENTS
In the definitions of the groups in Compound (I), examples of the saturated hydrocarbon group having 5 to 23 carbon atoms are straight-chain or branched-chain ones such as pentyl, isopentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosyl, heneicosyl, docosyl, and tricosyl. Examples of the unsaturated hydrocarbon group having 5 to 23 carbon atoms are straight-chain or branched-chain ones such as pentenyl, 3-methyl-1-butenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, octadecenyl, nonadecenyl, eicosenyl, heneicosenyl, docosenyl, tricosenyl, 1,3-pentadienyl, 8,11-heptadecadienyl, 8,11,14-heptadecatrienyl, and 4,7,10,13-nonadecatetraenyl.
Examples of the salts of Compound (I) are alkali metal salts such as sodium salt, potassium salt, and lithium salt; alkaline earth metal salts such as calcium salt and magnesium salt; ammonium salt; amine addition salts such as salts with monoethanolamine, triethanolamine, and triisopropanolamine; and basic amino acid addition salts such as salts with arginine and lysine. These basic components may be used singly or in combination.
Compound (I) can be prepared by converting a straight-chain or branched-chain fatty acid having 6 to 24 carbon atoms which is saturated or unsaturated (hereinafter referred to as a long chain fatty acid) into a halide such as chloride or bromide by the use of a halogenating agent such as thionyl chloride or phosgene, and then condensing the halide with an amino acid selected from glutamine and asparagine (hereinafter referred to simply as an amino acid). Alternatively, Compound (I) can be prepared by converting a long chain fatty acid into an acid anhydride, and then reacting the acid anhydride with an amino acid.
As the long chain fatty acid, fatty acids compo
Antonelli Terry Stout & Kraus LLP
Krass Frederick
Kyowa Hakko Kogyo Co. Ltd.
Ostrup Clinton
LandOfFree
Cosmetic composition does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cosmetic composition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmetic composition will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3138548