Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions – Polymer containing
Reexamination Certificate
1998-05-05
2002-04-02
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
Polymer containing
C424S070100, C424S070110
Reexamination Certificate
active
06365142
ABSTRACT:
TECHNICAL FIELD
The present invention relates to mild hair conditioning compositions.
BACKGROUND
Scalp hair becomes soiled due to its contact with the surrounding environment and from sebum secreted from the hair follicles. The build-up of sebum and environmental soiling can cause the hair to have a dirty or greasy feet, and an unattractive appearance. In order to ameliorate these effects, it is necessary to shampoo the hair with regularity.
Shampooing the hair removes excess sebum and other environmental soiling but has disadvantages in that the hair can be left in a wet, tangled, and relatively unmanageable state. Shampooing can also result in the hair becoming dry due to the removal of natural oils or other hair moisturizing materials. After shampooing, the hair can also suffer from a perceived loss of “softness.” Frequent shampooing also contributes to the phenomena of “split ends,” particularly for long hair. Split ends refers to a condition wherein the ends of the hair are split into two or more shafts, resulting in a frizzy appearance.
A variety of approaches have been developed to condition the hair. These range from post-shampooing hair rinses, to leave-on hair conditioners, to the inclusion of hair conditioning components in shampoos. Although many consumers prefer the ease and convenience of a shampoo which includes conditioners, a substantial proportion of consumers prefer the more conventional conditioner formulations which are applied to the hair as a separate step from shampooing, usually subsequent to shampooing. These hair conditioners typically are formulated as a thickened product, such as a gel or cream, for ease of dispensing and application to the hair.
Consumers prefer conditioners which provide dry combing benefits and wet hair feel attributes such as ease of spreading and hair softness during rinsing. In addition consumers desire new conditioners which is mild for scalp, hair and skin.
Hair rinse conditioners have conventionally been based on the combination of a cationic surfactant, which are generally a quaternary ammonium compound such as ditallow dimethyl ammonium chloride, and fatty alcohols, such as cetyl and stearyl alcohols. This combination results in a gel-network structure which provides the compositions with a thick, creamy rheology. However, quaternary ammonium compounds are not sufficient to provide hair softness and ease of spreading during rinsing and dry combing. In addition, quaternary ammonium compounds may cause harshness and irritation to scalp, hair and/or skin. Further, some of the quaternary ammonium compounds such as ditallowdimethylammonium chloride are not biodegradable, and consequently are not preferred in view of enviromental requirements.
Therefore, there is a desire of providing hair conditioning compositions which are substantially free of quaternary ammonium compounds.
In order to improve the above problem, Japanese Patent Publication (laid-open) No. 62-51612 discloses a hair treatment composition comprising amidoamine derivatives and carboxylic acid derivatives which provides conditioning efficacy for drying. Japanese Patent Publication (laid-open) No. 64-6210 discloses a hair conditioning composition comprising bis(2-alkyl-N-hydroxy ethyl imidazoline) chloracetic acid complex amphoteric surfactant and amidoamine which provides hair softness and smoothness. Japanese Patent Publication (laid-open) No. 5-271036 discloses a hair treating composition comprising amidoamine compounds, amphoteric surfactants, higher fatty alcohol, organic acid and water.
Therefore, there is a desire of providing a hair conditioning composition which is very mild for scalp, hair and/or skin, and which provides both dry combing benefits and wet hair feel attributes during rinsing.
It has now been found that hair conditioning compositions substantially free of quaternary ammonium compounds can be provided in the form of a product which is very mild for scalp, hair and/or skin, and which have excellent wet hair feel, spreadability, and rinseability, as well as providing glossiness, and dry combing benefits while being formulated in a rinse on or rinse off conditioner, through the use of amidoamines, acids, and fatty compounds.
SUMMARY
The present invention relates to hair conditioning compositions comprising by weight:
(a) from about 0.5% to about 5.0% of an amidoamine or mixture of amidoamines;
(b) from about 0.05% to about 2.0% of an acid or mixtures of acids;
(c) from about 0.1% to about 15% of a fatty compound selected from the group consisting of fatty alcohols, fatty acids, fatty alcohol derivatives,fatty acid derivatives, and mixtures thereof; and
(d) water;
wherein the pH of the composition is from about 4.5 to about 6, or the mole ratio of the amidoamine to the acid is from about 1:0.3 to about 1:1.0.
Such compositions satisfy the need for a hair conditioning composition substantially free of quaternary ammonium compounds having excellent wet hair feel, spreadability, and rinseability, as well as providing glossiness, and dry combing benefits while being formulated in a leave on or rinse off conditioner having a thick, cream-type rheology with excellent spreading, and slick feel during speading and rinsing.
These and other objects and benefits as may be discussed or apparent may be obtained with the present invention, which is discussed below.
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 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 compromise, consist of, or consist essentially of the essential elements described herein as well as any of the preferred or optional ingredients also described herein.
AMIDOAMINES
The compositions of the present invention comprise by weight from about 0.5% to about 5.0%, preferably from about 1.0 % to about 3.0%, more preferably from about 1.5% to about 2.5%, of an amidoamine or mixture of amidoamines.
The amidoamines hereof have the following general formula:
R
1
CONH(CH2)
m
N(R
2
)
2
wherein R
1
is a residue of C
11
to C
24
fatty acids, R
2
is a C
1
to C
4
alkyl, and m is an integer from 1 to 4.
Preferred amidoamines useful in the present invention include stearamidopropyldimethylamine, stearamidopropyldiethylamine, stearamidoethyldiethylamine, stearamidoethyldimethylamine, palmitamidopropyldimethilamine, palmitamidopropyldiethilamine, palmitamidoethyldiethilamine, palmitamidoethyldimethilamine, behenamidopropyldimethylamine, behenamidopropyldiethylamine, behenamidoethyldiethylamine, behenamidoethyldimethylamine, arachidamidopropyldimethylamine, arachidamidopropyldiethylamine, arachidamidoethyldiethylamine, arachidamidoethyldimethylamine, and mixtures thereof; more preferably stearamidopropyldimethylamine, stearamidoethyldiethylamine, and mixtures thereof.
ACIDS
The compositions of the present invention comprise by weight from about 0.05% to about 2.0%, preferably from about 0.2% to about 1.5%, and more preferably from about 0.3% to about 1.0% of an acid or mixture of acids.
The acids in this invention can be any acid used by those skilled in the art, including organic acids and inorganic acids. Preferred acids useful in the present invention include L-glutamic acid, lactic acid, hydrochloric acid, malic acid, succinic acid, acetic acid, fumaric acid, 1-glutamic acid hydrochloride, tartaric acid, and mixtures thereof; more preferably L-glutamic acid, lactic acid, hydrochloric acid, and mixtures thereof. Citric acid is preferably not used.
Preferably, the mole ratio of amidoamines of the present invention to acids of the present invention is from about 1:0.3 to about 1:1, more preferably from about 1:0.5 to about 1:0.9.
FATTY COMPOUNDS
The compositions of the present invention comprise by weight from about 0.1 to about 15%, pr
Gorstanje Brahm J.
Page Thurman K.
Rosnell Tara M.
Seidleck Brian K.
Sivik Linda M.
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