Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions – Cationic surfactant containing
Reexamination Certificate
2000-06-19
2002-10-22
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
Cationic surfactant containing
C424S070100, C424S070110, C424S070120, C424S070280
Reexamination Certificate
active
06468515
ABSTRACT:
This application is a 371 of PCT/US98/11781 filed Jun. 4, 1998.
TECHNICAL FIELD
The present invention relates to hair conditioning compositions comprising a high molecular weight ester oil. More specifically, the present invention relates to hair conditioning compositions comprising a high molecular weight ester oil, a hydrophilically substituted cationic surfactant, and a high melting point compound.
BACKGROUND
Human hair becomes soiled due to its contact with the surrounding environment and from sebum secreted by the scalp. The soiling of the hair causes it to have a dirty or greasy feel, and an unattractive appearance. The soiling of the hair necessitates shampooing with 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 stabc upon drying which can interfere with combing and result in a condition commonly referred to as “fly-away hair”, or contribute to an undesirable phenomena of “split ends”, particularly for long hair.
A variety of approaches have been developed to alleviate these after-shampoo problems. These approaches range from post-shampoo application of hair conditioner 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. Although some 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. Conditioning formulations can be in the form of rinse-off products or leave-on products, and can be in the form of an emulsion, cream, gel, spray, and mousse. Such consumers who prefer the conventional conditioner formulations value the relatively higher conditioning effect, or convenience of changing the amount of conditioning depending on the condition of hair or portion of hair.
A common method of providing conditioning benefit to the hair is through the use of hair conditioning agents such cationic surfactants and polymers, silicone conditioning agents, hydrocarbon oils, and fatty alcohols.
Cationic surfactants and polymers, hydrocarbon oils and fatty alcohols are known to enhance hair shine and provide moistness, softness, and static control to the hair. However, such components can also provide stickiness or greasy or waxy feeling, particularly when the hair is dried. Silicone conditioning agents are also known to provide conditioning benefits such as smoothness and combing ease due to the low surface tension of silicone compounds. However, silicone conditioning agents can cause dry feel or frizzy condition to the hair, again, particularly when the hair is dried.
Based on the foregoing, there remains a desire to provide hair conditioning compositions which provide improved conditioning benefits both when the hair is wet and when the hair is dried. Specifically, there is a need to provide long lasting moisturized feel, smooth feel, and manageability control to the hair when the hair is dried, yet not leave the hair feeling greasy.
None of the existing art provides all of the advantages and benefits of the present invention.
SUMMARY
The present invention is directed to a hair conditioning composition comprising:
(1) a high molecular weight ester oil being water-insoluble, having a molecular weight of at least about 800, and in liquid form at 25° C., the high molecular weight ester oil selected from the group consisting of:
a) pentaerythritol ester oils of the following formula:
wherein R
1
, R
2
, R
3
, and R
4
, independently, are branched, straight, saturated, or unsaturated alkyl, aryl, and alkylaryl groups having from 1 to about 30 carbons;
b) trimethylol ester oils of the following formula:
wherein R
11
is an alkyl group having from 1 to about 30 carbons, and R
12
, R
13
, and R
14
, independently, are branched, straight, saturated, or unsaturated alkyl, aryl, and alkylaryl groups having from 1 to about 30 carbons; and mixtures thereof;
(2) a hydrophilically substituted cationic surfactant;
(3) a high melting point compound having a melting point of at least 25° C.; and
(4) an aqueous carrier.
These and other features, aspects, and advantages of the present invention will become evident to those skilled in the art from a reading of the present disclosure.
DETAILED DESCRIPTION
While the specification concludes with claims which particularly point out and distinctly claim the invention, it is believed the present invention will be better understood from the following description.
All cited references are incorporated herein by reference in their entireties. Citation of any reference is not an admission regarding any determination as to its availability as prior art to the claimed invention.
Herein, “comprising” means that other steps and other ingredients which do not affect the end result can be added. This term encompasses the terms “consisting of” and “consisting essentially of”.
All percentages, parts and ratios are based upon the total weight of the compositions of the present invention, unless otherwise specified. All such weights as they pertain to listed ingredients are based on the active level and, therefore, do not include carriers or by-products that may be included in commercially available materials.
The aspects and embodiments of the present invention set forth in this document have many advantages. For example, the hair conditioning compositions of the present invention provide long lasting moisturized feel, smooth feel, and manageability control to the hair when the hair is dried, yet not leave the hair feeling greasy. The hair conditioning compositions of the present invention are suitable for product forms to leave on the hair, or rinse off from the hair.
HIGH MOLECULAR WEIGHT ESTER OIL
The hair conditioning composition of the present invention comprises a high molecular weight ester oil selected from the group consisting of pentaerythritol ester oils, trimethylol ester oils, and mixtures thereof. The high molecular weight ester oils useful herein are those which are water-insoluble, have a molecular weight of at least about 800, and are in liquid form at 25° C. As used herein, the term “water-insoluble” means the compound is substantially not soluble in water at 25° C.; when the compound is mixed with water at a concentration by weight of above 1.0%, preferably at above 0.5%, the compound is temporarily dispersed to form an unstable colloid in water, then is quickly separated from water into two phases.
The high molecular weight ester oil herein provides conditioning benefits such as moisturized feel, smooth feel, and manageability control to the hair when the hair is dried, yet not leave the hair feeling greasy. It is believed that water-insoluble oily material in general are capable of being deposited on the hair. Without being bound by theory, it is believed that, because of its bulkiness, the high molecular weight ester oil covers the surface of the hair and, as a result, the high molecular weight ester oil reduces hair friction to deliver smoothness and manageability control to the hair. It is also believed that, because it has some hydrophilic groups, the high molecular weight ester oil provides moisturized feel, yet, because it is liquid, does not leave the hair feeling greasy. The high molecular weight ester oil is chemically stable under normal use and storage conditions.
The high molecular weight ester oil is preferably included in the composition at a level by weight of from about 0.1% to about 20%, preferably from about 0.2% to about 10%, more preferably from about 0.5% to about 5%.
Pentaerythritol ester oils useful herein are those having the following formula
Mitsumatsu Arata
Mizoguchi Yukiko
Uchiyama Hirotaka
Page Thurman K.
Paul Andrew A.
Rosnell Tara M.
Sheikh Humera N.
Sivik Linda M.
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