JPS608215A - Dispersion of pearl agent - Google Patents

Abstract

PURPOSE:A dispersion of pearl agent having uniform particle diameter, improved stability, and beantiful appearance, containing specific amounts of three components of a cationic surface active agent, glycerine monofatty acid ester, and an alpha-mono(methyl-branched alkyl)glyceryl ether. CONSTITUTION:A dispersion of pearl agent containing 1-50wt% total amounts of (A) a cationic surface active agent such as a compound shown by the formula I (1-2 of R1-4 are 8-20C long-chain alkyl, etc., and the rest is 1-3C alkyl, etc.; X is halogen, etc.), (B) a glycerine monofatty acid ester such as compound shown by the formula II (R5 is 11-23C hydrocarbon), and (C) an alpha-mono(methyl- branched alkyl)glyceryl ether such as a compound shown by the formula III(R6 is 6-24C methyl-branched saturated hydrocarbon). A blending ratio of the components A-C is in a range of the inside of straight lines connecting a-c of the triangular coordinate of the three components. The dispersion of peal agent is more uniform than existing ones, and provides shampoo, rinse, etc. with beautiful appearance.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pearl agent dispersion, more specifically, a cationic surfactant, a glycerin monofatty acid ester, and an α-mono(methyl branched alkyl) f IJ seridyl ruther to produce burl-shaped crystals. The present invention also relates to a pearlescent agent dispersion having a uniform crystal shape and excellent high and low temperature stability.

Conventionally, the appearance of shampoos, conditioners, lotions, etc. has been made beautiful and the appearance has been increased in order to increase their added value by giving them a crowbar-like appearance. , conventionally,
For example, a method of blending pulverized natural or inorganic materials such as mica, fish scales, and bismuth oxychloride, or a method of crystallizing higher fatty acids or their salts, ethylene glycol higher fatty acid esters, etc. have been adopted. Among these, the method that has been commonly used in recent years is to use ethylene glycol higher fatty acid esters.This ester, which is solid at room temperature, is added during the production of shampoo, etc., heated and melted, and then cooled. This is a method in which crystals of the ester are produced and a burl-like appearance is imparted.

For example, ethylene glycol higher fatty acid ester (
JP-A-57-51799, JP-A No. 57-156409,
57-156410, 57-165308),
Polyethylene dicarboxylic acid ester (JP-A-57-67
510), ethylene glycol or triethylene dalicol fatty acid diester (JP-A-56-133400), and polyalkylene glycol difat UjW ester (JP-A-57-48335).

Under these circumstances, the present inventor conducted intensive research on a pearl agent that is cheaper than conventional pearl agents, has a uniform particle size, and can stably produce a pearl agent with a beautiful appearance in an activator. As a result, it was discovered that a mixture of a cationic surfactant, glycerin monofatty acid ester, and α-mono(methyl branched alkyl) glyceryl ether in a specific ratio achieved the above object, and the present invention was completed.

That is, the present invention contains (A) a cationic surfactant, (B) chrycerin monofatty acid ester, and (C) α-mono(methyl branched argyl) glyceryl ether as essential components, and the total amount of these three components is 1 ~50% by weight
, and the mixing ratio of (nl and (C>
) = o, 5 :) b[A) = 0.5, (B) =
59.5, (C) = 40.0]c [(A) = 0
．． 5, (Bi=99.0, (C)=0.53.

The Katimene surfactant which is the component (A) of the present invention is not particularly limited, and any surfactant that can be incorporated into a hair rinse agent may be used. 1 to 2 of R3 and ζ4 represent a long chain alkyl group or a long chain hydroxyalkyl group having 8 to 20 carbon atoms, and the remainder is an alkyl group having 1 to 3 carbon atoms, a hydroxyalkyl group, a benzyl group, or a total added mole. Preferred are quaternary ammonium salts represented by polyolefins having a number of 10 or less and a diethylene group, where X represents a rogen atom or an alkyl sulfate group having 1 to 2 carbon atoms, and in particular, distearyldimethylammonium chloride, stearyl Trimethylammonium methosulfate, stearyltrimethylammonium chloride, stearyldimethylbenzylammonium chloride, lauryldiethylbenzylammonium chloride, lauryltrimethylammonium furomide, distearylmethylhydroxymethyl chloride, cetyltriethylammonium bromide, N-stearyl-N,N,N- tri(bonooxyethylene)ammonium chloride (total addition of 3 moles),
Cetyltriethylammonium bromide, stearyldimethylammonium chloride and the like are preferred.

These (A) components may be blended singly or in combination of two or more in the pearlescent agent dispersion in an amount of 0.05 to 20% by weight (hereinafter simply expressed as %), preferably 0.5 to 10%. this(
If the proportion of component (3) is less than 0.05%, phase separation will occur, and if it exceeds 20%, the pearly luster will be lost, which is not preferable.

(B) Component glycerin monofatty acid ester has the following general formula (Ill, CH20COR.

CHOH(If) CM, OH (wherein R5 represents a linear or branched saturated or unsaturated hydrocarbon group having 11 to 23 carbon atoms) whose main component is a glycerin monofatty acid ester preferable. Preferred specific examples include those containing oleic acid monoglyceride, palmitic acid monoglyceride, isostearic acid monoglyceride, stearic acid monoglyceride, behenic acid monoglyceride, etc. as a main component. In general, monoglycerides that are commercially available include monoesters, diesters,
It contains a large amount of triester, unreacted glycerin, and fatty acids, which is not suitable for the purpose of the present invention, and in order to give the pearly luster in the present invention, the above-mentioned glycerin should be heated at 80 times or more. It is necessary to contain monofatty acid ester.

These components (B) need to be solubilized in the dispersion medium at a temperature higher than their melting point and become a uniform liquid, and in order to precipitate crystals with excellent pearl-like luster, they must be added to the pearling agent dispersion. It is blended in an amount of 0.595 to 49.5%, preferably 2 to 20%.

In addition, the α-mono(methyl branched alkyl)glyceryl ether of component (C) has the following general formula (IID, R, -0CH
The one represented by 2CH(0R)CH20H(l[) (in the formula, R6 represents a methyl branched saturated hydrocarbon group having 6 to 24 carbon atoms) is preferable. This is, for example,
It is manufactured by the method described in No. 6-39033. Preferred examples include It) +7) R675E in the formula
The following group (1v), (where m is an integer from 2 to 14, Otori is an integer from 3 to 11, and the sum of m and n is 9 to 2
1), and more preferred among these are those in which the sum of m and n in formula (IV) is 11 to 17 (that is, the total number of carbon atoms in the alkyl group is 14 to 20). Among them, the sum of m and n is 15 (ie, the total number of carbon atoms in the alkyl group is 18). Further, the branched methyl group is preferably one near the center of the alkyl main chain.

Next, the physical properties of representative compounds of α-mono(methyl branched alkyl)glyceryl ether are shown.

These (C1 components) are contained in the pearl agent dispersion in an amount of 0.05 to
40%, preferably 0.1 to 20%.

The pearl agent dispersion of the present invention comprises the above (A), (n) and (
C) component as an essential component, or furthermore, the total amount of these three components is 1 to 50%, preferably 5 to 30%, and (A
), (B) and (C) are within the range b surrounded by the straight line connecting the three points ("l, e) in the triangular diagram of the three-component system (Figure 1). is necessary.

The pearl agent dispersion liquid of ``Invention'' contains (A)% (B) and (
A solution containing 0 is heated to form a homogeneous solution, which is then forcedly or naturally cooled to precipitate crystals.

In the present invention, known nucleating agents and hydrotrope agents can be blended to promote burr formation. Nucleating agents include water-soluble inorganic salts such as sodium chloride, ammonium chloride, sodium sulfate, sodium citrate, sodium succinate, and sodium oxalate, or citric acid, succinic acid, oxalic acid, and urea. One or more of these are added in an amount of 0.1 to 5%.

In addition, examples of hydroloaf agents include ethyl alcohol, inglobil alcohol, glycerin, propylene glycol, 1,3-butylene glycol, sorbitol, polyethylene glycol, etc.
A species or two or more species are added in an amount of 1 to 50%. Furthermore, in order to stably maintain the produced pearl-like crystals, a water-soluble polymer compound such as a cellulose derivative, polyvinylpyrrolidone, or methoxyethylene-maleic anhydride copolymer may be blended. Particularly preferred water-soluble polymer compounds are those represented by the following general formula.

CRt is a hydrogen atom, a group +CH2CH2O+1l11H (
n' is an integer of 1 to 5), group -CU3, group -'4)I5,
Represents one or more of the groups -C3H, OH, and n is 5 to 5.
5,000] These water-soluble polymer compounds contain one or more of them.
．． 1 to 5 weight additives can be distributed.

In the method for producing the pearl agent dispersion of the present invention, the stirring speed is not particularly limited, and a low rotation speed of about 10 to 100 rpm is sufficient.

At this time, it is preferable to dissolve the above-mentioned nucleating agent and stabilizer in the dispersion medium in advance, and in order to cause pearlization quickly, the liquid temperature should be lowered to 0 to 20°C. is preferred. The cooling method is not particularly limited, and may be slow cooling or rapid cooling.

In this way, as the liquid cools, the entire liquid has a beautiful burl-like luster. This composition may further contain pH adjusters, preservatives, pigments, fragrances, ultraviolet absorbers, and the like, if necessary. The pH is preferably adjusted to a range of 4 to 11, particularly 7 to 10.

The pearl agent dispersion of the present invention thus obtained has a
A necessary amount is blended into liquid compositions such as liquid cleaning compositions, liquid rinses, and paste compositions depending on the intended use, and it is possible to impart a beautiful burl-like gloss to these compositions. In this case, the amount of the pearl agent dispersion added to the above composition is, for example, 1 to 20%, preferably 2 to 10% in the case of a liquid composition.
It is.

The pearl agent dispersion obtained in the above-mentioned manner has a particle size of about 3 μm because the grain size of the crystals therein is as fine as about 1 to 10 μm.
Compared to conventional molten pearl agent dispersions made of particles with a particle size of 0μ or more, it has a more uniform and beautiful appearance.

Next, the present invention will be explained with reference to Examples, but the present invention is not limited to these Examples. The test method used in this example is as follows.

(1) Appearance 100fn! A sample was placed in a transparent glass container, and the appearance of pearlescent luster was observed with the naked eye. If the sample contained air bubbles, it was centrifuged to remove air bubbles.

○=Pearl luster is uniform.

× = cloudy, emulsion-like, uneven pearl luster.

(2) High temperature stability A sample was placed in a transparent glass container, sealed, and stored in a constant temperature bath at 50° C. for one month, and then visually observed for separation of the sample and aggregation of the burl brightener.

○=No abnormality such as separation, aggregation of the burl brightener, or loss of pearl luster is observed.

×= Any abnormality such as separation, aggregation of the burl brightener, or loss of pearl luster is observed.

(3) Low-temperature stability After placing the sample in a transparent glass container, sealing it, and storing it in a constant temperature bath at -5℃ for one month, the presence or absence of separation and solidification of the sample was observed with the naked eye. ○ = Separation, solidification Something that is fluid without any conclusion.

× = Abnormalities such as separation and caking.

Example 1 0) Distearyldimethylammonium chloride
1% G water 90 ■, ■ heated to the same temperature and dissolved in ■ heated to 80℃
, (2) was added, and the mixture was cooled to 20°C while stirring. This composition exhibited a gutter-like appearance and had good storage stability.

Example 2 ■ Monobehenyltrimethylammonium fluora 4de
0.4% ■ Monocetyltrimethylammonium chloride 0.6 ■ α-mono(isostearyl) glyhydridyl ether 0.5 [(■) in formula, m = 7, n = 8] ■ Water 90 80 ■ heated to ℃ and dissolved ■ heated to the same temperature ~
Add (2), stir and cool to 20°C. This composition exhibited a nozzle-like appearance and had good storage stability.

Example 3 Each component as shown in Table 1 was blended in various proportions and a nol agent dispersion was prepared by the method shown in Example 1. The results of evaluating the obtained dispersion were It is shown in Table 1.

Margin below As is clear from these results, a fully satisfactory pearling agent dispersion can be obtained when the mixing ratio of the three component heads, (B) and (Cl) connects the three points a, b, and e in Figure 1. Only those within the range surrounded by straight lines.

Example 4 A pearl agent dispersion having the composition shown in Table 2 was prepared, and the obtained dispersion was evaluated. The preparation method and evaluation method of the composition are the same as in Example 1.

Below margin

[Brief explanation of the drawing]

FIG. 1 is a triangular diagram showing the blending ratios of components (i), (n), and (c) in the pearlescent agent dispersion of the present invention. France) cationic surfactant, (B) glycerin monofatty acid ester, (C) α-mono(methyl branched alkyl)glyceryl ether. Applicant: Kao Soap Co., Ltd.',',t:',f:,'',1';

Claims (1)

[Claims] 1. As an essential component, (A) a cationic surfactant;
(B) contains glycerin monofatty acid ester and (C) α-mono(methyl branched alkyl)glyceryl ether, the total amount of these three components is 1 to 50% by weight, and (A)
, (B) and (c) are the following three points in the triangular diagram of the three-component system, a [(A) = 40.0, (B1 =
59.5, l::l=0.5, 1b[(A)=0.5,
(B) = 59.5, (C) = 40.0]c[(
A) = 0.5, (B) = 99.0, (C) = 0.5]. 2. The cationic surfactant has the following general formula (1), (wherein R1, R2, R3 and R401-2 have 8 to 8 carbon atoms.
20 long-chain alkyl groups or long-chain hydroxyalkyl groups, the remainder is an alkyl group having 1 to 3 carbon atoms, a hydroxyalkyl group, a benzyl group, or a holoxyethylene group with a total number of additions of 10 or less, and XVi halogen 3. The pearlescent agent dispersion according to claim 1, wherein the glycerin monofatty acid ester is represented by the following general formula (
It>, H20H (wherein R5 represents a linear or branched saturated or unsaturated hydrocarbon group having 11 to 23 carbon atoms), which is mainly composed of chrycerin monofatty acid ester. A pearling agent dispersion according to Scope 1. 4. Glycerin monofatty acid ester has the general formula (II
) The pearl agent dispersion according to claim 3, which contains 80 times or more of the pearling agent dispersion. 5. α-Mono(methyl-branched alkyl)glyceryl ether has the following general formula (MOl 3゜R6-OCH,CH
(0K)CH20H(1) (in the formula, R6 has 6 to 2 carbon atoms
The pearling agent dispersion according to claim 1, which is represented by the following formula (representing a methyl branched saturated hydrocarbon group of 4). 6, α-mono(methyl branched alkyl) glyceryl ether is (R6 in the α formula is the following group (t), cit3-(
ca2)In-c, u-(cu2)n-(IV)CH9 (wherein, m is an integer of 2 to 14, n is an integer of 3 to 11, and the sum of m and n is 9 to 21) ) The pearl agent dispersion according to claim 5, which is represented by: