JPS638320A - Shampoo composition - Google Patents

Abstract

PURPOSE:The titled mild composition, containing an alkanolamide, aminoalkanesulfonate and cationic high polymer and having good foaming and touch of foams as well as excellent conditioning and hair curl holding property. CONSTITUTION:A shampoo composition containing (A) an alkanolamide, preferably coconut fatty acid diethanolamide, (B) a compound expressed by formula I [R1 is alkyl; R2 is H or alkyl; the total of carbon numbers in R1 and R2 is 8-14; R3 is H, 1-3C alkyl or hydroxy-substituted alkyl; R4 and R5 are R3 except H; n is 1 or 2; M is alkali (earth) metal, ammonium or organic amine], preferably a compound expressed by formula II or III and (C) a cationic high polymer, e.g. quaternary nitrogen-containing water-soluble polymer, preferably having 2,000-3,000,000 molecular weight and 0.2-5% nitrogen content. The amounts of the respective ingredients blended are preferably within the following ranges. 0.1-10wt% component (A), 5-20wt% component (B) and 0.1-2wt% component (C).

Description

[Detailed description of the invention] The present invention has good lathering and foam feel, mild action on the skin and hair, and excellent conditioning properties and hair curl retention properties. The present invention relates to shampoo compositions.

Problems that are about to be solved in the future Recently, hair care behavior has become diverse, and in line with this trend, shampoos with various effects are now available on the market. In this case, consumers have many requests for shampoos, and in addition to the basic performance of conventional shampoos such as lathering and foam feel, they also have mild effects on the skin and hair, hair damage prevention effects, and hair damage prevention effects. Additional performance is required, such as conditioning properties that make hair supple and easy to manage, and curl retention properties.

For this reason, various studies have been conducted to meet the above-mentioned demands. For example, anionic surfactants such as alkyl sulfates and polyoxyalkyl sulfates that have been commonly used in shampoos have excellent lathering and foam feel, but are highly irritating to the skin and hair.
Instead, it has been proposed to use an acylated amino acid as a surfactant, which foams well and is less irritating to the skin and hair. However, acylated amino acids generally have poor foaming properties in the presence of dirt, and the foam texture and creaminess are not sufficient. For this reason, in order to eliminate the above-mentioned drawbacks, Japanese Patent Application Publication Nos. 47-42809, 50-22803, 54-120610, 50
Although various improvements have been proposed in Japanese Patent No. 33684, etc., none of these improvements is sufficient to improve the foaming performance and creaminess of shampoo.

Furthermore, in the past, attempts have been made to incorporate protein hydrolysates, acylated protein hydrolysates, amino acids, etc. into shampoo compositions for the purpose of improving hair finish and softening effects on the skin. However, the effects of these protein BP's'Js bodies on mildening the effect on the skin and improving the finish of hair cannot be said to be sufficient.

For this reason, shampoo compositions that have excellent basic properties such as foaming performance and creamy foam feel, have a mild effect on hair and skin, prevent hair damage, and make it easier to style hair appropriately have been developed. Although this is desired, nothing that is fully satisfactory has yet been proposed.

The present invention was made in view of the above circumstances, and provides a shampoo composition that has excellent foaming and foam feel, has a mild effect on the skin and hair, and has excellent conditioning properties and hair curl retention properties. The purpose is to provide.

Means and Effects for Solving the Problems In order to achieve the above object, the present inventors have conducted extensive research and found that an aminoalkane represented by the formula (1) below as an anionic surfactant. When a sulfonate is used together with an alkanolamide and a cationic polymer compound, the foaming and foam feel of the aminoalkanesulfonate, as well as its mild effect on the skin and hair, are not impaired. It was discovered that the conditioning properties and curl retention properties were significantly improved, and the present invention was completed.

Therefore, the present invention provides (A) an alkanolamide, (B) the following general formula (1)% formula% (wherein R1 is an alkyl group, R2 is a hydrogen atom or an alkyl group, and the carbon between R and R2 is The total number is 8 to 14. R3 is a hydrogen atom, an alkyl group having 1 to 3 carbon atoms or a hydroxy-substituted alkyl group, R4 and R1 are each an alkyl group having 1 to 3 carbon atoms or a hydroxy-substituted alkyl group, and n is 1 or 2, M represents an alkali metal, an alkaline earth metal, ammonium, or an organic amine) and (C) a cationic polymer compound. The present invention provides a shampoo composition.

In the present invention, by using the above three types of compounds (A) to (C) in combination, the foaming and foam feel of the aminoalkanesulfonate (B), and the mildness to the skin and hair are improved. It has improved conditioning and curl retention without any loss. In this case, (B) aminoalkanesulfonate and (A)
Either the alkanolamide (A) and the cationic polymer compound (C) are used in combination, or the alkanolamide (A) and the cationic polymer compound (C) are used together with another anionic surfactant. Even if these are used in combination, the performance of one or more of foaming, foam feel, mildness, conditioning properties, and curl retention will be poor, and the object of the present invention cannot be achieved.

The present invention will be explained in more detail below.

The first essential component used in the present invention is an alkanolamide. In this case, there is no particular restriction on the type of alkanolamide, and any alkanolamide can be effectively used, but in particular, the following general formula (2) (However, R4 has an average carbon number of 6 to 16, preferably 10 to
14 alkyl groups, a is 1 or 2, and a+b=2. ) are preferably used. Specifically, the compound of formula (2) is coconut fatty acid, lauric acid,
Examples include condensates of higher fatty acids such as stearic acid and jetanolamide, but it is particularly preferable to use coconut fatty acid jetanolamide.

The above alkanolamides may be used alone or in combination of two or more. In addition, there is no particular restriction on the amount added, but it is 0.05% (weight%) of the entire composition.
The same applies hereinafter), particularly preferably from 0.1 to 10%; if it is less than 0.05%, the effect of improving conditioning properties and curl retention may not be sufficiently exhibited.

Incidentally, the alkanolamide used in the present invention can be produced by a method of inoculation, using fatty acid methyl or fatty acid ethyl ester as a starting material, and producing 120 to 2
A method of heating at 50° C. for a relatively short period of time, a method of reacting the above starting materials using an alkali metal or its hydroxide or an alcoholate as a catalyst, and then separating or neutralizing this, or a method of using sodium bicarbonate as a catalyst. It can be obtained by a method such as

The second essential component used in the present invention is an aminoalkanesulfonate represented by the above formula (1). Here, there is no limitation on the type of aminoalkanesulfonate, but
In particular, compounds represented by the following formula (3) % formula % (However, M represents the same thing as above), the following formula (4) % formula % (However, M represents the same thing as above.) A compound represented by the following formula (5) or a compound represented by the following formula (5) (where M represents the same as above) can be suitably used.

The aminoalkanesulfonate of formula +1) above is part 1
A species may be used alone or two or more species may be used in combination.

In addition, the blending amount is not particularly limited, but 3% of the total composition
~30%, particularly preferably 5-20%, and 3%
If the amount is less, foaming may be reduced.

Note that the above T3+, aminoalkanesulfonic acid salts of formula (41, +1, including compounds of formulas represents the same thing as above.) By deaminolyzing the sultone represented by the following formula (7) with an amine represented by the following formula (7) (wherein R3, R, and R1 represent the same thing as above) After obtaining aminoalkanesulfonic acid, it can be easily produced by reacting this aminealkanesulfonic acid with sodium hydroxide, potassium hydroxide, magnesium hydroxide, aqueous ammonia, monoethanolamine, etc.

In this case, an alkylamine or an alkanolamine can be suitably used as the compound of the above formula (7). For example, by using dimethylamine, trimethylamine, jetanolamine, the compound of the above formula (31, (41, (51) can be obtained.

The third essential component used in the present invention is one or more cationic polymer compounds. In this case, the type of cationic polymer substance is not limited, but for example, quaternary nitrogen-containing cellulose ether, quaternary nitrogen-containing starch,
Quaternary nitrogen-containing water-soluble polymers such as quaternary nitrogen-containing poly(trialkylaminoethyl methacrylate) and quaternary nitrogen-containing polyvinylpyrrolidone can be effectively used. Here, these quaternary nitrogen-containing water-soluble polymers include:
Molecular weight 2000-3000000, nitrogen content 0.2
It is preferable to use 5%. Note that the quaternary nitrogen-containing water-soluble polymer can be produced by reacting a water-soluble polymer with a quaternary nitrogen-introducing agent.

In this case, examples of the water-soluble polymer include cellulose ether, starch, polyvinylpyrrolidone, and trialkylaminoethyl methacrylate polymer, and examples of the quaternary nitrogen-introducing agent include glycidyltrimethylammonium halide and 3-halogeno-2-hydroxypropyl. Examples include trialkylammonium halide.

Further, as another example of the cationic polymer compound effectively used in the present invention, the following formula (6) (wherein R7
and R8 are each a hydrogen atom or a methyl group, X is a halogen atom, and p is an integer from 150 to 6,200. ), or a poly(dimethyldiallylammonium halide) type cationic polymer compound represented by the following formula (7) (wherein R7, R8, 8) (However, R1 and RIG are each a hydrogen atom or a methyl group, X is a halogen atom, and q+r is an integer from 150 to 9000.) or the following formula (9) (However, Rq, RIo, X and q+r are Examples include copolymer-type cationic polymer compounds of dimethyldiallylammonium halide and acrylamide represented by the following formula.

The above cationic polymer compounds may be used alone or in combination of two or more. There is no limit to the amount of the compound, but it should be 0.05% or more of the total composition, especially 0.05% or more of the total composition.
The content is preferably 1 to 2%, and if it is less than 0.05%, the effects of improving conditioning and curl retention may not be sufficiently realized.

In addition to the above-mentioned components, the shampoo composition of the present invention may optionally contain other components depending on the type and purpose of use.

For example, in addition to the anionic surfactant of formula (1), other anionic surfactants, nonionic surfactants, amphoteric surfactants, and cationic surfactants can be blended, and in addition, thickeners, ultraviolet absorbers, etc. , preservatives, bactericidal agents, emulsifying agents, antidandruff agents, antioxidants, tonic agents, pigments, fragrances, etc., or one or more of them may be blended.

As explained above, the shampoo composition according to the present invention has good foaming and foam feel, has a mild effect on the skin and hair, and has excellent conditioning properties and curl retention properties. It is a product that can fully meet the diversified needs of consumers.

EXAMPLES Hereinafter, the present invention will be specifically explained with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples. Before explaining each side, the evaluation method adopted by each side will be explained.

(1) Foaming (sensory evaluation) Hair is divided into two parts, 3 g of a comparison sample and a test sample are applied to each of the left and right sides, and after lathering, the lathering is evaluated and judged by 10 testers according to the following criteria. In addition, as a comparative sample, A
Polyoxyethylene alkyl ether sodium sulfate (average EO addition -[-/L/several hundred = 3, alkyl group: C+z/C+z=1/1), abbreviated as ES-Na, was used.

++: Foaming is clearly superior to AES-Na.

+: Slightly better foaming than AES-Na.

±: The foaming level is the same as that of AES-Na.

-: Foaming is inferior to AES-Na.

--: Very poor foaming compared to AES-Na.

Divide your hair into two parts, apply 3g of comparison sample and test sample to each side, lather, and evaluate the feel of the lather using the following criteria by 10 testers. do.

In addition, AES-Na similar to the above was used as a comparison sample.

++: Foam feel is clearly superior to AES-Na.

+: Slightly better foam feel than AES-Na.

±: The feel of foam is similar to that of AES-Na.

-: Foam feel is inferior to AES-Na.

--: Very poor foam feel compared to AES-Na.

Group - Peel i■■Chodoku Sensory evaluation was performed using the following method.

The shampoo composition is evaluated by a manual immersion test performed by 10 testers using a 1% aqueous solution (35° C.). That is,
The dipping-drying operation was performed 15 times at intervals of 1 minute, and the degree of rough skin on the hands was visually judged after 24 hours using the following criteria.

○: Almost no rough skin △: Some dry exfoliative changes in the stratum corneum surface layer of the skin ×: Dry exfoliative changes in more than 30% of the skin (4) Conditioning i value [hair suppleness] Log hair 1 g of shampoo composition is evenly applied to the bundle, soaked in warm water at 40° C. and 250 mf for 10 seconds, washed, and rinsed twice. The suppleness of the hair strands after drying was judged by tactile sensation by 10 judges.If the tactile sensation was superior to that of hair strands treated with a standard shampoo composition, it would be given 2 points, if it was slightly better, it would be given 1 point, and if it was the same, it would be given 1 point. If so, 0
If it was slightly inferior, it was given 11 points, and if it was inferior, it was given 12 points, and the scores of the 10 judges were totaled to form the evaluation score.

[Hair manageability]

In the same manner as in the case of determining hair suppleness, the cohesiveness of the hair bundles after washing and drying was determined in the same manner as for determining hair suppleness, and evaluation points were determined. If the evaluation score is 7 or more for both hair suppleness and hair manageability, it is determined that the hair is sufficiently effective for practical use.

0.2g of the shampoo composition was evenly applied to a 23cm hair strand, soaked in 50ml of warm water at 40℃ for 10 seconds, washed and rinsed twice. , diameter 1.2
Wrap it around a cm rond and secure it.

After drying at 60° C. for 30 minutes, the hair was untied into a spring shape, hung vertically, and stored at 25° C. and 65% relative humidity for 2 hours, after which the position of the hair tip was measured.

Curl retention was determined using the following formula.

(However, L is the length of the hair before curling, 23 cm)
Lo is the length of the hair immediately after removing it from the rondo, L.

indicates the length of the hair after 2 hours. ) Those with curl retention of 0 to 10% were evaluated as x, those with curl retention of 10 to 20% were evaluated as Δ, and those with curl retention of 20% or more were evaluated as ○.

[Examples 1 to 2, Comparative Examples 1 to 6] Shampoo compositions of Examples 1 to 12 and Comparative Examples 1 to 6 were prepared according to the formulations listed in Table 1, and the foaming and foaming properties were evaluated using the evaluation method described above. The feel, skin irritation, conditioning properties and curl retention were evaluated. The results are also listed in Table 1.

In addition, in the composition column of each table, aminoalkanesulfonate *1 and *2 are the following compounds, respectively.

=1/1 HOC02C) 12 N” -C1(zCH20H
As is clear from the results in Table 1, in the case of the compositions (Examples 1 to 12) containing the aminoalkanesulfonate, the alkanolamide, and the cationic polymer compound, foaming and foaming were reduced. While the compositions that lacked any one component (Comparative Examples 1 to 6) showed excellent performance in all evaluations of feel, skin irritation, conditioning, and curl retention, none of the components It is found that the performance of the method is poor and the object of the present invention cannot be achieved.

[Examples 13 and 14] The liquid cleaning compositions shown in Table 2 were prepared, and their performance was tested in the same manner as described above. The results are also listed in the same table.

Table 2 As is clear from Table 2, the shampoo composition of the present invention had excellent properties.

Claims (1)

[Claims] 1. (A) alkanolamide, (B) the following general formula (1) ▲There are numerical formulas, chemical formulas, tables, etc.▼... (1) (However, R^1 is an alkyl group, R^2 represents a hydrogen atom or an alkyl group, and the total number of carbon atoms of R_1 and R_2 is 8
~14. R_3 is a hydrogen atom, an alkyl group having 1 to 3 carbon atoms or a hydroxy-substituted alkyl group, R_4 and R_
5 represents an alkyl group having 1 to 3 carbon atoms or a hydroxy-substituted alkyl group, n represents 1 or 2, and M represents an alkali metal, an alkaline earth metal, ammonium, or an organic amine. ) and an aminoalkanesulfonate represented by (C)
A shampoo composition comprising a cationic polymer compound.