JP2001139438A - Premix composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a premix composition for preparing a hair conditioner using the premix composition for the hair conditioner, capable of imparting a good smooth feeling to the hair, simultaneously imparting softness, a moist feeling, a moderate oily feeling, etc., to the hair and excellent in effects on the suppression of stickiness or stiffness. SOLUTION: This premix composition for the hair conditioner comprises a liquid polymer and a surfactant. In the premix composition, the surfactant is uniformly dispersed in the liquid polymer. The hair conditioner contains the premix composition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a premix composition for a hair conditioner for producing a hair conditioner which imparts a feeling such as a moist feeling, an oily feeling and a softness at the same time as good smoothness to the hair, and a premix composition for the hair conditioner. Related hair conditioner.

[0002]

BACKGROUND OF THE INVENTION Hair conditioners generally provide the hair with flexibility and luster, replenish the hair with oil, and give the hair a smooth, comb-like finish. Have. Conventionally, hair conditioners are compounded with various components such as quaternary ammonium salt type surfactants, aliphatic alcohols, lipophilic substances such as oils, synthetic or natural polymer compounds, emulsifiers, and thickeners. ing. In particular, since lipophilic substances and high molecular compounds greatly affect the finished feeling of hair, various ideas have been devised for their types and amounts. When an appropriate polymer compound is selected, "slip feeling", "smoothness" and good combability of hair can be mainly imparted. However, in general, it is difficult to achieve a feeling such as "moist feeling", "oiliness", "cohesion", and "softness" by using a high molecular compound alone. Therefore, the feel is improved by blending a lipophilic substance.

However, in general, the lipophilic substance has a smaller amount of residue on hair after rinsing as compared with a high molecular compound, and has a "moist feeling" depending on the formulation and the method of use (such as the amount used and the degree of rinsing operation). "Oiliness", "cohesion",
In many cases, a texture such as "softness" cannot be sufficiently imparted. In that case, the hair satisfies properties such as combability (lubricity) mainly due to the effect of the polymer component remaining on the surface, but the feeling of use cannot be said to be sufficient.

[0004] It is an object of the present invention to provide a hair conditioner which gives the hair smoothness and smoothness typified by combability and the like, as well as a feeling of moderate moistness, oiliness, softness and unity. is there.

[0005]

Means for Solving the Problems In order to improve the feel of the hair, the present inventor has previously mixed and dispersed a surfactant with a polymer compound which easily remains on the hair to form a premix composition, By using a hair conditioner made with this, an excellent hair conditioning effect can be obtained (in addition to "slipperiness" and "smoothness", "moistness", "oiliness", "cohesion", "softness" And the like) can be imparted to the hair), and the present invention has been completed.

That is, the present invention provides a premix composition for a hair conditioner, comprising a liquid polymer compound and a surfactant, wherein the surfactant is uniformly dispersed in the liquid polymer compound.

[0007] The present invention also provides a hair conditioner containing the premix composition for a hair conditioner.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The premix composition for a hair conditioner of the present invention is prepared by uniformly dispersing a mixture comprising a liquid polymer compound and a surfactant. The method of mixing and dispersing is not particularly limited, but usually, the surfactant is not dissolved in the liquid polymer compound, and the viscosity of the liquid polymer compound is not suitable for the mixing operation. It is difficult to obtain a uniform dispersion composition.

Therefore, when the system is heated and stirred with a stirrer such as a homomixer, the stirring efficiency is largely improved mainly by the effect of lowering the viscosity of the liquid polymer compound. As a result, the liquid polymer compound (continuous phase) A dispersion system (premix composition) in which a fine structure of a surfactant is uniformly distributed and suspended can be prepared. This dispersion system is fundamentally different from an emulsified composition composed of two immiscible liquid phases in that it does not contain components other than the liquid polymer compound and the surfactant. Here, the heating temperature at the time of stirring varies depending on the type of the liquid polymer compound used, but is preferably 100 to 2 times.
It is about 50 ° C, more preferably about 150 to 200 ° C.

Depending on the type of the liquid polymer compound and the surfactant to be used, a mixer using vibration such as a lab mixer can also be used. In this case, a uniform dispersion composition can be obtained without necessarily heating the system. .

The weight composition ratio between the liquid polymer compound and the surfactant varies depending on the type of the liquid polymer compound and the surfactant used, and the combination thereof.
The range of 0.001-1: 0.1 is preferable, and especially 1: 1:
It is preferably from 0.005 to 1: 0.05, more preferably from 1: 0.01 to 1: 0.05.

Examples of the liquid polymer compound used in the present invention include silicone oil, polyether compounds, perfluoropolyether compounds, hydrocarbon polymer compounds, and the like.
For example, dimethylpolysiloxane, methylphenylpolysiloxane, modified silicone (eg, alkyl-modified silicone, amino-modified silicone, polyether-modified silicone, oxazoline-modified silicone, and the like), and the like,

Examples of the polyether compound include polyethylene glycol, polypropylene glycol, poly (1,4-butanediol) and the like.

As the perfluoropolyether compound, for example, Fomblin HC (Montefluos)
And Demnum (manufactured by Daikin Industries, Ltd.).

Examples of the hydrocarbon polymer compound include (a) polyene hydrocarbons such as polybutadiene, polyisoprene, poly (1-butene), and poly (1-decene);
(B) Copolymers of acrylonitrile with diolefin monomers such as poly (butadiene-acrylonitrile) and poly (isoprene-acrylonitrile); (c) isocyanate compounds such as poly (methylene polyphenylisocyanate); (d) poly (caprolactone) ) Polycaprolactone polyol compounds such as triols and (e)
Examples thereof include polyolefin ether compounds such as polyvinyl ethyl ether and polyvinyl isobutyl ether.

Among the liquid polymer compounds, (i) the polymer compound has a viscosity of 0.01 to 10000 Pa · s at 25 ° C. from the viewpoint of the dispersibility and uniformity of the premix.
s is preferred. Conditioners manufactured using a material having a higher viscosity than this range tend to have too strong an oily feeling and a residual feeling, and a material having a low viscosity has a tendency to feel squeak and roughness. In addition, from the viewpoint of improving the feel, of the viscosity range, 0.1 to 100 Pa ·
s is preferable, and particularly preferably 0.2 to 10 Pa · s.

Further, from the viewpoint of improving the conditioning effect, the liquid polymer compound has the following viscosity characteristics in a thin film state in addition to the above-mentioned viscosity characteristics (i). In the above, a thin film is formed at an additional pressure of 1 to 4 MPa with a polymer compound sandwiched between mica plates,
When measuring the effective viscosity η _eff in the thin film state, η _eff
And the shear rate γ is in the range of 0.1 ≦ γ ≦ 1000, η
I met _{eff αγ} ^n, is -1 ≦ n ≦ -1 / 2, are preferred.

The viscosity in the state of a thin film is considered because the polymer compound adheres to and remains on the surface of the hair in the form of a thin film after shampooing and rinsing, so that the slip characteristics in the thin film are considered to greatly affect the feel. . Here, the viscosity in a thin film state can be analyzed by, for example, a surface force measuring device (SFA3 manufactured by SurForce Corporation) (FIG. 1). That is, a polymer droplet is sandwiched between the mica substrate surfaces which are smooth at the atomic level, and the additional pressure P = 1 to 4 MPa
And squeeze into a thin film.
Shear is applied in a range of nm / sec to 10 μm / sec, and a shear force (friction force) F acting on the film is measured. In this measurement method, since the thickness of the thin film can be measured simultaneously with the measurement of the shear force, the effective viscosity η in shear of the thin film is measured.
_eff can be obtained from the following equation. A in the formula indicates the area of the thin film portion to be sheared.

[0019]

Η _eff = FD / AV

The viscosity of the thin film thus determined is
Degree is plotted as a shear rate γ (= V / D) dependency
When the polymer compound has a shear rate γ in the range of about 0.1 to 10
At 00, the effective viscosity η_effAnd the shear rate γ are η
_eff∝γⁿ, Satisfying −1 ≦ n ≦ −1 / 2
It can be roughly divided into two types (Fig. 2). above
As the polymer compound that does not satisfy the conditions, for example, the molecular weight
Is about 48,000 linear type polyisoprene (PIP
48000) and η as shown in FIG. _effIs γ
It is constant regardless of the value. Polymer compounds included in this group
Are other entities whose molecular weight is determined by the chemical structure of the polymer
Significantly higher than the molecular weight between intermeshing points, resulting in viscosity
Is high and if left on the hair,
May cause discomfort. On the other hand, η_eff∝
γⁿ, -1≤n≤-1 / 2, a group of compounds
Prepare a remix composition and leave it on the hair as a thin film
In this state, the above-mentioned “stickiness” does not occur.

The liquid polymer compound used does not necessarily have to be a single type, but different types of polymer compounds can be used in combination. In this case,
It is preferable that the mixture satisfies the viscosity requirement as a mixture even if the viscosity characteristics of the bulk and the thin film alone deviate from the above conditions.

In consideration of the above-mentioned viscosity characteristics, polybutadiene, polyisoprene, polypropylene glycol, and dimethylpolysiloxane are particularly preferable as the liquid polymer compound in the premix composition for a hair conditioner of the present invention.

On the other hand, as the surfactant in the present invention, it is preferable to use an anionic surfactant and a cationic surfactant. Specific examples of the anionic surfactant include (a) higher fatty acid salts such as sodium palmitate and calcium stearate, (b) alkyl sulfates such as sodium dodecyl sulfate and sodium lauryl sulfate, and (c) dodecylbenzenesulfonic acid. Examples thereof include alkyl benzene sulfonates such as sodium and alkyl phosphates such as (d) sodium monolauryl phosphate. Specific examples of the cationic surfactant include (a)
Quaternary ammonium salts such as monoalkyltrimethylammonium salts and dialkyldimethylammonium salts;
(B) Alkylamine acetate and (c) alkylamine hydrochloride. Of these, higher fatty acid salts, alkyl sulfates, quaternary ammonium salts, and the like are particularly preferred from the viewpoint of dispersibility in liquid polymer compounds and hair conditioning effects.

The hair conditioner of the present invention is prepared by adding a premix composition of a liquid polymer compound and a surfactant prepared as described above to a cationic surfactant which is a main base component of the conditioner, a higher alcohol and water. Can be prepared by emulsifying the mixture.

The cationic surfactant used as the main component of the conditioner includes a quaternary ammonium salt of a mono-long-chain alkyl type, a quaternary ammonium salt of a di-long-chain alkyl type, or ethylene oxide (EO). ) Addition type quaternary ammonium salts and the like, and higher alcohols include, for example, myristyl alcohol, cetyl alcohol, stearyl alcohol and the like.

In the hair conditioner thus obtained, the premix composition remains on the hair efficiently, has good sliding properties and combability mainly due to the liquid polymer compound, and has a synergistic effect of premixing with a surfactant. By improving the feeling such as moist feeling, oiliness, and softness by the effect, it has a conditioning effect that cannot be obtained by a conventional conditioner in which constituent components are individually compounded and produced.

The hair conditioner of the present invention may further contain a protein hydrolyzate, such as a water-soluble collagen or a collagen derivative, which is a known component usually added to a hair conditioner.
Further, a chelating agent, a coloring agent, a preservative, a pH adjusting agent, a viscosity adjusting agent, a fragrance, a pearlescent agent, a wetting agent and the like may be blended.

The hair conditioner of the present invention can be embodied in various forms such as a liquid, an emulsion, a cream, a gel, a mousse, etc., and a hair rinse, a hair conditioner, a hair pack, a hair cream, a hair lotion, a hair It can be used as a hair product such as a treatment.

[0029]

EXAMPLES Examples 1 to 7 A premix composition was prepared using a hydrocarbon polymer compound, a polyether compound and silicone oil as the liquid polymer compound. The liquid polymer compound and the surfactant are weighed so as to have a weight ratio described in Tables 1 to 3, and stirred and mixed under a heating condition of about 170 ° C. for about 30 minutes using a homomixer. A macroscopically uniform dispersion system (premix composition) was prepared. This premix composition is mixed with alkyltrimethylammonium chloride, higher alcohol, and ion-exchanged water,
Heated to ８５85 ° C. After a uniform emulsified system was prepared by shaking and stirring the whole system, it was gradually cooled to room temperature while stirring was continued, and finally a fragrance was added to prepare a uniform milky hair conditioner. In addition, as a comparative example, a hair conditioner (individual compounding system) prepared by mixing a liquid polymer compound and a surfactant simultaneously with other components without premixing, and a hair conditioner containing only a liquid polymer compound were prepared. . The hair conditioners produced using the premix composition for a hair conditioner of the present invention were all good in emulsified state and product texture.

Performance Evaluation The hair conditioners prepared in Examples 1 to 7 were applied to the hair after shampooing, and each of them was subjected to a sensory test of the treated hair by five panelists, and the conditioning effect was evaluated based on the following criteria. . The results are shown in Tables 1 to 3. Evaluation criteria: ◎; good, ○: somewhat good, △: normal,
×; bad

[0031]

[Table 1]

(1) Alkyl chain length: 16 to 18 (for example, Cotamine 86W) (2) Alkyl chain length: 16 to 18 (for example, Calcol 6870) (3) PBD: average molecular weight of polybutadiene (manufactured by Acros)
5000 C16Na: Sodium palmitate (Tokyo Kasei Kogyo) TMSAC: Trimethyl stearyl ammonium chloride (Tokyo Kasei Kogyo)

[0033]

[Table 2]

(1) Alkyl chain length: 16 to 18 (for example, Cotamine 86W) (2) Alkyl chain length: 16 to 18 (for example, Calcol 6870) (3) PPG: polyethylene glycol (manufactured by Aldrich) Average molecular weight 1000 or 3500 C16Na: Sodium palmitate (Tokyo Kasei Kogyo) C18Ca: Calcium stearate (Tokyo Kasei Kogyo)

[0035]

[Table 3]

(1) Alkyl chain length: 16 to 18 (for example, Cotamine 86W) (2) Alkyl chain length: 16 to 18 (for example, Calcol 6870) (3) PPG: polyethylene glycol (manufactured by Aldrich) Average molecular weight 1000 or 3500 C16Na: Sodium palmitate (Tokyo Kasei Kogyo) C18Ca: Calcium stearate (Tokyo Kasei Kogyo)

[0037]

[Table 4]

(1) Alkyl chain length: 16 to 18 (eg, Cotamine 86W) (2) Alkyl chain length: 16 to 18 (eg, Calcol 6870) (3) Si: dimethyl silicone KF-96-1000cs (manufactured by Shin-Etsu Chemical Co., Ltd.) SDS: Sodium dodecyl sulfate (manufactured by Wako Pure Chemical Industries) C16Na: Sodium palmitate (manufactured by Tokyo Chemical Industry)

The hair conditioner of the present invention in which a premix composition of a liquid polymer compound and a surfactant is blended as an oil component can be used in a system in which the liquid polymer compound and a surfactant are individually blended, or a liquid polymer compound alone. Compared with the system containing as an oil component, a further improvement in the conditioning effect was confirmed particularly in terms of moist feeling, softness and cohesion.

[0040]

The hair conditioner produced using the premix composition for a hair conditioner according to the present invention comprises:
At the same time as imparting a good sliding feeling to the hair, it imparts softness, a moist feeling, an appropriate oily feeling, and the like, and has an excellent effect of suppressing stickiness and stiffness.

[Brief description of the drawings]

FIG. 1 shows a conceptual diagram of a viscosity measurement of a thin film by a surface force measuring device.

FIG. 2 shows the relationship between effective viscosity and shear rate on a logarithmic scale.

[Explanation of symbols]

 PIP: polyisoprene PBD: polybutadiene PPG: polypropylene glycol The number at the end indicates the average molecular weight.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) C08L 101/00 C08L 101/00 F term (Reference) 4C083 AC072 AC241 AC242 AC692 AC782 AD021 AD022 AD041 AD042 AD151 AD152 BB05 CC33 EE06 EE07 EE28 FF01 4J002 AC031 AC061 AC071 BB171 BB191 CF191 CH021 CP031 CP091 EG026 EG036 EN116 EN136 EV186 EV256 EW046 FD316 GB00 HA07

Claims (5)

[Claims] 1. A hair conditioner premix composition comprising a liquid polymer compound and a surfactant, wherein the surfactant is uniformly dispersed in the liquid polymer compound. 2. The premix for a hair conditioner according to claim 1, wherein the liquid polymer compound is selected from the group consisting of a silicone oil, a polyether compound, a perfluoropolyether compound and a hydrocarbon polymer compound. Composition. 3. The premix composition for a hair conditioner according to claim 1, wherein the liquid polymer compound has a viscosity of 0.01 to 10000 Pa · s at 25 ° C. 4. The premix composition for a hair conditioner according to claim 1, wherein the surfactant is a higher fatty acid salt. 5. A hair conditioner containing the premix composition for a hair conditioner according to claim 1.