Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions – Polymer containing
Reexamination Certificate
1999-06-30
2001-09-04
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
Polymer containing
C424S070100, C424S070120, C424S070210, C424S070220, C424S070240, C424S070270, C510S119000
Reexamination Certificate
active
06284230
ABSTRACT:
TECHNICAL FIELD
The present invention relates to conditioning shampoo compositions which both cleanse the hair and condition the hair.
BACKGROUND
Human hair becomes soiled due to its contact with the surrounding environment and from the sebum secreted by the scalp. The soiling of hair causes it to have a dirty feel and an unattractive appearance. The soiling of the hair necessitates shampooing with frequent regularity.
Shampooing cleans the hair by removing excess soil and sebum. However, shampooing can leave the hair in a wet, tangled, and generally unmanageable state. Once the hair dries, it is often left in a dry, rough, lusterless, or frizzy condition due to removal of the hair's natural oils and other natural conditioning and moisturizing components. The hair can further be left with increased levels of static upon drying, which can interfere with combing and result in a condition commonly referred to as “fly-away hair.”
A variety of approaches have been developed to alleviate these after-shampoo problems. These approaches range from post-shampoo application of hair conditioners such as leave-on and rinse-off products, to hair conditioning shampoos which attempt to both cleanse and condition the hair from a single product. Hair conditioners are typically applied in a separate step following shampooing. The hair conditioners are either rinsed-off or left-on, depending upon the type. Of product used. Hair conditioners, however, have the disadvantage of requiring a separate and inconvenient treatment step. Conditioning shampoos, i.e. shampoos which both cleanse and condition the hair, are highly desirable products because they are convenient for consumers to use.
In order to provide hair conditioning benefits in a cleansing shampoo base, a wide variety of conditioning actives have been proposed. However, many of these actives have the disadvantage of leaving the hair feeling soiled or coated, of interfering with the cleansing efficacy of the shampoo.
Japanese Patent Laid-open (Kokai) H6-17097 published Jan. 25, 1994 discloses cleaning compositions such as shampoos comprising a polyvalent metal salt of anionic surfactant and a silicone derivative. Exemplified anionic surfactants include acyl amino acid salts. International Publication No. WO95/01152 published Jan. 12, 1995 discloses a hair conditioning shampoo comprising a detersive surfactant, a nonvolatile hair conditioning agent, and polyvalent metal cations in free ion form. Japanese Patent Laid-open (Kokai) H7-11287 published Jan. 13, 1995 discloses a cleaning composition such as shampoos comprising an N-acyl neutral amino acid magnesium salt and an anionic surfactant. Exemplified amino acid moieties of the magnesium salt are N-methyl-&bgr;-alanine and sarcosine.
In the present invention, a hair conditioning shampoo composition comprising a primary anionic surfactant, a polyvalent metal cation and a cationic conditioning agent has been developed. This composition provides conditioning shampoo compositions which have improved overall conditioning benefits, improved lathering, and preferable viscosity.
SUMMARY
The present invention relates to a hair conditioning shampoo composition comprising:
(a) from about 0.05% to about 50% by weight of a primary anionic surfactant selected from the group consisting of polyhydrophilic anionic surfactants, amino acid surfactants, and mixtures thereof;
(b) from about 0.001M to about 0.5M of a polyvalent metal cation;
(c) from about 0.05% to about 20% by weight of a cationic conditioning agent selected from the group consisting of cationic surfactants, cationic polymers, and mixtures thereof; and
(d) the remainder an aqueous carrier;
wherein components (a), (b) and (c) are capable of forming a coacervate.
Such compositions satisfy the need for a hair conditioning shampoo composition which has improved overall conditioning benefits, improved lathering, and preferable viscosity.
In further embodiments, the present invention relates to a hair conditioning shampoo composition further comprising an additional detersive surfactant capable of forming a coacervate with components (a), (b) and (c); preferably selected from the group consisting of a secondary anionic surfactant and an amphoteric surfactant. In further embodiments, the present invention relates to a hair-conditioning shampoo composition further comprising additional conditioning agents selected from the group consisting of fatty compounds, silicone compounds, hydrocarbons, and mixtures thereof.
DETAILED DESCRIPTION
All percentages herein are by weight of the compositions unless otherwise indicated. All ratios are weight ratios unless otherwise indicated. All percentages, ratios, and levels of ingredients referred to herein are by weight and are based on the actual amount of the ingredient, and do not include solvents, fillers, or other materials with which the ingredient may be combined as commercially available products, unless otherwise indicated.
The invention hereof can comprise, consist of, or consist essentially of the essential elements described herein as well as any of the preferred or optional ingredients also described herein.
All publications, patent applications, and issued patents mentioned herein are hereby incorporated in their entirety by reference.
Primary Anionic Surfactant
The present invention comprises from about 0.05 to about 50%, preferably from about 0.1 to about 30%, more preferably from about 0.5% to about 20% of a primary anionic surfactant selected from the group consisting of polyhydrophilic anionic surfactants, amino acid surfactants, and mixtures thereof. The primary anionic surfactant is capable of forming a coacervate with the below mentioned polyvalent metal cations and below mentioned cationic conditioning agents. Preferably, the primary anionic surfactant is a polyhydrophilic anionic surfactant.
Polyhydrophilic anionic surfactants are useful as the primary anionic surfactants herein. By “polyhydrophilic” herein, is meant a surfactant that has at least two hydrophilic groups which provide a hydrophilic nature and are capable of forming salts With a metal cation, particularly with polyvalent metal cations. Polyhydrophilic surfactants useful in the present invention herein are only those having at least two hydrophilic groups in the molecule, and is not intended to encompass those which only have one hydrophilic group. One molecule of the polyhydrophilic anionic surfactant herein may comprise the same hydrophilic groups, or different hydrophilic groups. Specifically, the polyhydrophilic anionic surfactants of the present invention comprise at least one group selected from the group consisting of carboxy, hydroxy, sulfate, sulfonate, and phosphate. Suitable polyhydrophilic anionic surfactants are those which comprise at least one of a carboxy, sulfate, or sulfonate group, more preferably those which comprise at least one carboxy group.
Nonlimiting examples of polyhydrophilic anionic surfactants include N-acyl-L-glutamates such as N-cocoyl-L-glutamate and, N-lauroyl-L-glutamate, laurimino diproprionate, N-acyl-L-aspartate, di-(N-lauroyl N-methyl taurate), polyoxyethylene laurylsulfosuccinate, disodium N-octadecylsulfosuccinate; disodium lauryl sulfosuccinate; diammonium lauryl sulfosuccinate; tetra sodium N-(1,2-dicarboxyethyl)-N-octadecylsulfosuccinate; the diamyl ester of sodium sulfosuccinic acid; the dihexyl ester of sodium sulfosuccinic acid; and the dioctyl ester of sodium sulfosuccinic acid, and 2-cocoalkyl N-carboxyethyl N-carboxyethoxyethyl imidazolinium betaine, lauroamphohydroxypropylsulfonate, cocoglyceryl ether salts, cocoglyceride sulfate, lauroyl isethionate, lauroamphoacetate, and those of the following formula:
wherein R is an alkyl of 12 to 18 carbons. Other polyhydrophilic anionic surfactants include olefin sulfonates having about 10 to about 24 carbon atoms. The term “olefin sulfonates” is used herein to mean compounds which can be produced by the sulfonation of alpha-olefins by means of uncomplexed sulfur trioxide, followed by neutralization of the acid reaction mixture in c
Harada Kiroh
Hu Fang
Sako Takashi
Uchiyama Hirotaka
Murphy Stephen T.
Page Thurman K.
Paul Andrew A
Peebles Brent M.
Seidleck Brian K.
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