JP2000119146A - Wax composition for hair cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wax composition capable of preventing a hair cosmetic from being sticky and having desirable properties as oily raw material. SOLUTION: This wax composition comprises hydrocarbons, includes isoparaffins as main ingredients, and has 20-60C, 30-70 deg.C melting point, 20-70 by penetrometer at 25 deg.C and <=1.0 mass % oil content.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wax composition having physical properties suitable as a compounding material for a hair cosmetic, such as a rinse, a hair styling agent and a hair treatment agent.

[0002]

2. Description of the Related Art Raw materials constituting cosmetics include oily raw materials such as oils and fats, waxes and ester oils, surfactants used for emulsification and solubilization, and other moisturizing agents, thickeners, and the like. There are a film forming agent and a fragrance. Among them, oily raw materials are widely used as main constituents of cosmetics for the purpose of suppressing the evaporation of water from the skin and improving the feeling of use.

[0003] The present invention relates to a wax composition having physical properties suitable as an oily raw material for a rinse, a hair styling agent, and a hair treatment agent for hair, among cosmetics.

[0004] Functionally, a rinse for imparting smoothness to the hair after shampooing to adjust the surface condition of the hair, a hair styling agent for fixing and setting the hair, a hair styling agent emphasizing the hair styling property, a gloss, a tactile sensation, a texture and handling of the hair There are hair treatment agents that improve ease.

Conventionally, oily raw materials for these hair cosmetics include oils and fats such as olive oil, camellia oil, macadamia nut oil, castor oil, natural waxes such as carnauba wax, candelilla wax, jojoba oil, beeswax, lanolin, liquid paraffin, paraffin. , Petrolatum, ceresin, microcrystalline wax, hydrocarbons such as squalane, higher fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, cetyl alcohol, stearyl alcohol, isostearyl alcohol, 2-octyldodecanol, etc. Esters of higher alcohols such as isopropyl myristate, 2-octyldodecyl myristate, cetyl 2-ethylhexanoate and diisostearyl malate; and silyl esters such as methylpolysiloxane and methylphenylpolysiloxane. Over down oil and the like have been used.

[0006]

As oily raw materials for rinsing, hydrocarbons, higher alcohols, esters, silicone oils and the like are mainly used. Oily raw materials for styling agents that emphasize hair styling include castor oil, liquid paraffin,
Silicone oil and the like, and oily raw materials for hair treatment agents that emphasize treatment properties include camellia oil, olive oil, liquid paraffin, vaseline, polyoxyethylene hydrogenated castor oil, silicone oil, and the like. However, when a conventional oil-based raw material was used, the hair was sticky at the time of and after hair styling, and satisfactory hair shine, feel, and peelability could not be obtained.

[0007] In order to eliminate this stickiness, there is an emulsification type such as a hair cream, but it has not yet been possible to completely eliminate the stickiness.

[0008] In natural products, the annual production is affected by changes in the climate, the supply is unstable, and the price is high.

In view of the above problems of the prior art, the present invention prevents the cosmetics for hair from being sticky, and has the optimum physical properties for exhibiting excellent gloss, touch, and releasability, and can be supplied stably. It is an object of the present invention to provide a cheap wax composition.

[0010]

Means for Solving the Problems The present inventors have found that a wax composition composed of hydrocarbons can achieve the above object by containing isoparaffin as a main component. Based on the above, the present invention has been completed.

That is, the wax composition of the present invention is a wax composition containing isoparaffin as a main component and having a very low oil content. By containing isoparaffin as a main component, flexibility, which is an important property as an oily raw material for cosmetics, is obtained. ,
When used in cosmetics for hair because it has flexibility and extremely low oil content, stickiness can be significantly reduced.

The wax composition is obtained from a petroleum fraction, is tasteless and odorless, has no "odor return phenomenon" which is a problem for cosmetics, and has a white appearance and is superior to natural waxes and the like. Is what it is.

The wax composition of the present invention has a carbon number of 20 to 20.
60 are preferred. If the number of carbon atoms is less than 20, the content of isoparaffin decreases, which is not preferable. On the other hand, if the number of carbon atoms exceeds 60, the melting point is increased, and the flexibility is undesirably reduced.

The melting point of the wax composition of the present invention is 30-7.
Preferably it is 0 ° C. If the melting point is lower than 30 ° C., oil components increase, and oil seeping out is not preferred. On the other hand, if the melting point exceeds 70 ° C., the material becomes hard and the smoothness is undesirably reduced.

The penetration of the wax composition of the present invention (25)
C) is preferably from 20 to 70. 20 penetration
If it is less than the above, it is not preferable because it becomes too hard and the smoothness is reduced. When the penetration reaches 70 or more, it becomes soft,
It is not preferable because it produces an oily substance.

The hydrocarbon composition of the present invention preferably has an isoparaffin ratio of 60 to 100 parts by weight and a normal paraffin ratio of 0 to 40 parts by weight. When the proportion of isoparaffin is 60 parts by weight or less, the flexibility becomes poor and the composition becomes brittle, which is not preferable. As the ratio of isoparaffin approaches 100 parts by weight, the smoothness increases, and preferable properties as a wax composition are obtained. When the proportion of normal paraffin is more than 40 parts by weight, the composition becomes brittle, which is not preferable.

The oil content of the wax composition of the present invention is 1.0
It is preferably at most mass%. Oil content is 1.0ma
If it exceeds ss%, stickiness when used in cosmetics for hair is not eliminated, which is not preferable.

The method for producing the wax composition of the present invention includes a urea dewaxing method, a solvent separation method, a distillation separation method and the like. Hereinafter, the manufacturing method will be described.

Urea dewaxing method: A production method in which normal paraffin is added to urea to separate isoparaffin. Solvent fractionation method: After slack wax obtained from a petroleum fraction is dissolved in a solvent, the solution is gradually cooled to precipitate crystals. The crystals are removed and the extract is obtained to obtain isoparaffin. Distillation fractionation method: A paraffin wax fraction is fractionated by distillation of petroleum wax to obtain a residue and obtain isoparaffin.

The wax composition obtained by the above production method is purified by hydrogenation, activated carbon treatment, activated clay treatment, furfural solvent extraction, diatomaceous earth or sulfuric acid washing, and the like to obtain the wax composition of the present invention.

The wax composition of the present invention contains petroleum wax (paraffin wax, microcrystalline wax, petrolatum, etc.), animal and plant wax (carnauba wax, beeswax, etc.) as long as the preferable properties are not adversely affected.
Contains candelilla wax, rice wax, jojoba oil, lanolin, etc.), synthetic wax (polyethylene wax, fischer psy wax, ester wax, etc.), and oxidized wax (paraffin oxide wax, microcrystalline wax, polyethylene oxide, olefin oxide, etc.) can do.

In addition to the above components, a coloring agent such as a pigment and a dye and a fragrance can be mixed as required.

[0023]

EXAMPLES Hereinafter, the present invention will be described specifically with reference to examples, but the present invention is not limited to these examples.

Examples 1 to 3 and Comparative Examples 1 to 4 Hair treatments containing the wax composition for hair cosmetics of the present invention having the compositions shown in Table 1 below were obtained. The effectiveness was evaluated using these. The results are shown in Table 1.

(Method for Preparing Efficacy Evaluation Sample) A predetermined amount of the above hair treatment is applied to a hair bundle of human hair having a weight of 5 g and a length of 30 cm. Next, the sample was left standing for 5 hours under the conditions of a temperature of 25 ° C. and a humidity of 60% and dried to obtain an evaluation sample.

(Evaluation Method of Efficiency) The evaluation samples were evaluated by the following method.

Gloss: DAYLIGHT (KENKO C
O. The sensory evaluation was performed by five professional panelists under white light according to the method described in the above. Hand: Sensory evaluation was performed by five expert panelists. Peelability: After the evaluation sample has been passed through 10 times, the surface condition of the hair is observed.

[0028]

(Evaluation Criteria) Gloss, Touch Peelability Evaluation result Evaluation result Evaluation result 4 Good 4 No peeling 3 Somewhat good 3 Slightly peeling 2 Somewhat bad 2 Somewhat peeling 1 Bad 1 Clearly Peeling is observed

Example 4 (Hair Cream) A hair cream was produced according to a conventional method with the following composition.

Example 5 (Rinse) A rinse was produced according to a conventional method with the following composition.

EFFECT OF THE INVENTION By blending the wax composition of the present invention, the surface of the hair is coated by its excellent viscoelasticity and smoothness, and gloss is imparted to the hair by its excellent transparency, smoothness and viscoelasticity. At the same time, the surface of the hair is prevented from sticky and smooth.

Claims (4)

[Claims] 1. A wax composition comprising a hydrocarbon, the wax composition for hair cosmetics comprising isoparaffin as a main component. 2. The hydrocarbon has 20 to 60 carbon atoms,
The wax composition according to claim 1, having a melting point of 30 to 70C and a penetration at 25C of 20 to 70. 3. The composition of the hydrocarbon is such that the proportion of isoparaffin is 60 to 100 parts by weight and the proportion of normal paraffin is 0.
The wax composition according to claim 1, wherein the amount is from 40 to 40 parts by weight. 4. The wax composition according to claim 1, wherein the oil content is 1.0 mass% or less.