Mono and dialkyl quats in hair conditioning compositions

Details Mono and dialkyl quats in hair conditioning compositions Mono and dialkyl quats in hair conditioning compositions

2001-10-22

2003-09-02

Venkat, Jyothsan (Department: 1615)

Drug, bio-affecting and body treating compositions

Live hair or scalp treating compositions

Cationic surfactant containing

C424S701000

Reexamination Certificate

active

06613316

ABSTRACT:

BACKGROUND OF THE INVENTION
Most individuals buy and use a hair shampoo for its cleansing properties. In addition to having clean hair, a consumer also desires sufficiently-conditioned hair that holds a preset configuration. However, hair shampoos generally are formulated with highly effective anionic surfactants that primarily clean as opposed to conditioning the hair. Anionic surfactants not only remove the dirt and soil from the hair, but also remove lipids naturally present on the surface of the hair fibers. Therefore, the desirable cleansing properties of anionic surfactants also leave the hair in a cosmetically-unsatisfactory condition. Shampoos also do not help to detangle wet hair and do not impart residual conditioning benefits to dry hair, such as manageability or styleability of hair sets.
In general, shampoo compositions containing anionic surfactants, or nonionic surfactants or amphoteric surfactants, leave the hair with an undesirable harsh, dull and dry touch, or feel, usually called “creak”, after the hair is shampooed and then rinsed with water. Furthermore, thoroughly cleansed hair also is extremely difficult to comb, in either the wet or the dry state, because the individual hair fibers tend to snarl, kink, and interlock with each other. In addition, incompletely dried hair, such as hair dried with a towel, has poor brushing properties, and after complete drying, the hair does not set well. The combing or brushing property of dry hair remains poor, and the hair has undesirable electrostatic properties in a low humidity atmosphere that causes the hair to “fly away”, thereby further reducing the brushing properties of the hair.
The unsatisfactory combing or brushing property of hair immediately after shampooing, or during trimming treatments after shampooing, also causes hair damage, such as split ends or hair breakage. In addition, the natural luster and resiliency of the hair is reduced. The overall unsatisfactory condition of shampooed hair often necessitates a subsequent post-shampoo treatment of the hair with a conditioning composition to improve these undesirable physical characteristics. Conditioning compositions typically are applied separately from the hair shampoo, and usually are rinses, cream-like emulsions or lotions containing a cationic compound.
Therefore, consumer needs traditionally have been met by the application of a shampoo to cleanse the hair, followed by the application of a conditioner composition to improve wet combing. The commonly accepted method has been to shampoo the hair, followed by rinsing the hair, and then separately applying a conditioner composition, followed by a second rinse. The wet combing problem has been solved by treating shampooed hair with a conditioner composition that coats the hair shaft and causes the individual hair shafts in a tress to resist tangling and matting because of the smooth coating provided by conditioner molecules on the shaft.
However, the need for improved compositions that condition the hair, i.e., render the hair more manageable, has long been recognized in the art. As previously discussed, it is well-known that anionic surfactants are suitable for hair shampooing, and that cationic compounds, like cationic surfactants and cationic polymers, are useful as hair conditioners. Therefore, cationic compounds that are substantive to hair often are used to complete the hair cleansing and hair conditioning cycle.
The ability of cationic compounds to adsorb to or interact with the keratinous material of the hair makes these compounds desirable for improving wet hair detangling and dry hair manageability. However, cationic compounds that adsorb particularly strongly to the hair also can reduce the elasticity, body and set of the dried hair. Therefore, although conditioning compositions for application to freshly shampooed hair are well known, new and improved conditioning formulations based on cationic compounds are continually sought.
The following is a list of patents and patent applications in this field.
U.S. Pat. No.4,818,523 discloses a stable easily removable hair rinse conditioner which provides good conditioning, styling ease, and manageability of hair, but does not build up and is cost effective, consisting essentially of effective amounts of a dodecyl trimethyl quaternary ammonium compound, a saturated or unsaturated C
14
-C
22
alkanol, and a cyclic or linear silicone, in an aqueous vehicle.
U.S. Pat. No. 4,976,956 discloses a method of imparting improved conditioning properties to hair comprising treating the hair with a composition comprising a water-soluble quaternary ammonium compound, such as cetrimonium chloride; an oil-soluble, water-dispersible quaternary ammonium compound, such as distearyldimonium chloride; an acid-neutralized amidoamine compound, and a low molecular weight polydimethylsiloxane compound, such as cyclomethicone. The method and composition unexpectedly provide improved hair-conditioning properties such as wet feel, wet and dry combing, manageability, sheen, luster, body and overall hair condition.
U.S. Ser. No. 09/130,956 filed Aug. 7, 1998 discloses hair conditioning compositions comprising mono and dialkyl quats.
U.S. Ser. No. 09/252,564 filed Feb. 18, 1999 discloses hair conditioning compositions comprising silicones and mono and dialkyl quats.
There are a series of patents from Lion Corp that describe the use of a monoalkyl and a dialky quat mixture in a conditioner. These are Japanese Patents JP 56169617 A, JP 56169615 A, JP 87008088, JP 56169614 A, JP 87008087 B, JP 56169613 A, JP 87008086 B and U.S. Pat. No. 4,976,956.
The present invention is directed to an aqueous opaque conditioning composition that is esthetically acceptable to consumers, improves the wet combing and dry combing properties of hair, and also leaves the dry hair with satisfactory cosmetic and physical properties, including, in particular, dry combing and feel, less hair coating, manageability, body, condition of the ends and set.
SUMMARY OF THE INVENTION
The invention is an aqueous opaque conditioner that has a combination of two different types of conditioning agents and an emulsifier. The present invention is a low solids formulation that provides substantial conditioning benefit without compromising viscosity, to users who use conditioners.
The purpose of the invention is to provide a conditioner with improved performance, while using effective materials at ratios that optimize their benefit.
The present invention relates to an aqueous opaque conditioner which comprises a monoalkyl quat from C14 to higher Carbon chain lengths (preferably C16 to C22) and a dialkyl quat selected from a mixture of C16, C16 dialkyl quat and C18, C18 dialkyl quat. Also included is an amount of fatty alcohol necessary to opacify the conditioner.
Another aspect of the invention is to provide a method of treating the hair to yield well-conditioned hair having esthetically pleasing physical properties by contacting the hair with an aqueous opaque conditioner of the present invention.
The present invention relates to an aqueous opaque hair conditioning composition comprising:
(a) a monoalkyl quat having 14 or greater carbon atoms in an alkyl substituent; preferably the monoalkyl quat has 16 to 22 carbon atoms.
(b) and a dialkyl quat selected from a mixture of C16,C16 dialkyl quat and C18,C18 dialkyl quat;
(c) a silicone compound; and
(d) a fatty alcohol in an amount sufficient to opacify said composition.
Another aspect of the invention is to provide a method of treating the hair to yield well-conditioned hair having esthetically pleasing physical properties by contacting the hair with an opaque conditioner of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
Unless indicated otherwise, as used herein, “%” means weight %. The starting materials set forth herein are either known or can be prepared in accordance with known methods. As used herein, “C16, C16 dialkyl quat” or “C16 dialkyl quat” or “(Di—C
16
) quat” refers to a quaternary ammonium compound wherein two of the alkyl substituents are the same

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