CN113995689A

CN113995689A - Personal care composition suitable for both adult and child use

Info

Publication number: CN113995689A
Application number: CN202111396925.9A
Authority: CN
Inventors: 徐由江; 黄勇前; 朱红军; 郭静波
Original assignee: Zhangjiagang Great Chemicals Co ltd
Current assignee: Zhangjiagang Great Chemicals Co ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-02-01
Anticipated expiration: 2041-11-23
Also published as: CN113995689B

Abstract

The invention provides a personal care composition suitable for adults and children, relating to the field of daily chemical products, and the personal care composition comprises the following raw materials: the N-alkanoyl taurate liquid has the advantages of excellent performances in the aspects of viscosity, transparency, conditioning property, foam and the like, good mild performance and suitability for children.

Description

Personal care composition suitable for both adult and child use

Technical Field

The present invention relates to the field of daily chemical products, and in particular to a personal care composition suitable for both adults and children.

Background

In general, shampoos, body washes for babies and for adults differ greatly: the core of much concern for infant shampoo and bath products is mildness, which often does not have much requirements for conditioning, hair softness, even lather, and the like. The adult shampoo needs to highlight the conditioning of hair and the sensory problems and effects of foam and the like. Therefore, commercially available personal care compositions, both adult and baby commercial compositions, have often been significantly different, and adult shampoo and shower products, based on the use of a primary surfactant, have been developed, essentially anionic surfactants. Because of the need for good foaming properties, most commercially available adult care compositions, such as body washes, shampoos, hand soaps, etc., are based on sulfate-containing surfactants, such as SLS (sodium lauryl sulfate) or SLES (sodium laureth sulfate), which are both potentially mild and safe and at the same time highly irritating and not at all suitable for use by infants and young children. However, as the quality of life is continuously improved, consumers have more concern about the mildness of the product, and more consumers are pursuing sulfate-free products to obtain safer and healthier use effects.

To this end, many sulfate-free products have been developed that have other surfactants (e.g., nonionic and/or amphoteric surfactants) as primary surfactants in place of the sulfate anionic surfactants (e.g., CN106456479A discloses a sulfate-free personal care composition that uses amphoteric surfactants as primary surfactants), however, these compositions tend to have significantly less lathering and/or cleansing properties than compositions that have an anionic primary surfactant. Another way to provide mildness is to use milder anionic surfactants. Among such mild anionic surfactants, N-acyl amino acids and salts thereof may be used. However, such surfactant-based compositions often have problems, mainly in one or more of the following areas, compared to sulfate-based compositions: 1. foam is difficult to reach the equivalent level of sulfate; 2. it is difficult to thicken sufficiently to provide good organoleptic properties. Such cleansers do not remain on the hair or skin during and/or after application, and may drip and run into the eyes, mouth, ears, or nasal passages of the user. This can result in an unpleasant consumer experience. Currently, two approaches are taken to thicken sulfate-free detergent formulations. One approach involves the use of high levels of non-sulfate surfactants to exert the structuring properties of such ingredients. This approach is most common, but also expensive. The second approach involves the use of high levels of rheology modifiers; however, these components may cause problems of reduced foam and poor dispersibility. 3. It is difficult to form an isotropic transparent liquid. 4. The interaction between the amino acid surfactant and the cationic conditioning polymer leads to the instability of the system and the phenomena of turbidity, precipitation and delamination. In view of this, patent CN 111278416A by proclaim company specially designs a system with low inorganic salt content to solve the problem; 5. the system is fragile, has poor tolerance to electrolyte, or has a narrow pH application range. As described above, the presence of the electrolyte may deteriorate the isotropy of the N-acylamino acid salt surfactant, further affecting the stability of the system.

N-alkanoyl taurate is a kind of mild amino acid surfactant which is widely concerned, and some application patents related to N-alkanoyl taurate have been found in the past. It is to be noted that the N-alkanoyl taurates or N-acyl taurates mentioned in the prior patents are all N-methyl alkanoyl taurates or N-methyl alkanoyl taurates. The same problems exist with compositions containing N-methyl alkanoyl taurate as the primary surfactant and other N-acyl amino acid salts as the primary surfactant, and many of the patents concerned are directed to solving these problems.

The senecio patent CN103702656 uses taurine derivative type surfactant as main anionic surfactant for anti-discoloration perfume, but in the examples, sodium cocoanut oil fatty acid methyl taurate is used. There is no real example in the patent relating to N-alkanoyl taurates.

The seniority patent CN107205907 adopts a method of adding a large amount of sugar and/or sugar alcohol to solve the viscosity problem of the composition of the methyl taurine derivative, thereby not only greatly improving the cost of the composition, but also causing unnecessary resource waste.

U.S. patent PCT/EP2018/064336 combines sodium cocoyl isethionate with N-acyl methyl taurate, along with glycerin and a small amount of amphoteric surfactant to achieve a certain viscosity and transparency effect that forms an isotropic solution.

Patent CN107468531A uses N-alkanoyl alanine salt, N-alkanoyl sarcosine salt, N-methyl alkanoyl taurate as anionic surfactant instead of sulfate anionic surfactant, wherein emphasis is also on solving the transparency and viscosity problems of the composition.

In the comparative example of patent CN110582266A from Qiangsheng corporation, sodium methylcocoyltaurate alone was used as an anionic surfactant, and it was difficult to achieve proper transparency and viscosity even at a low level in the composition.

Patent CN201710115813.9 discloses a face cleansing gel, which comprises the following components: an anionic surfactant selected from the group consisting of alkanoyl glycinates, alkanoyl taurates and mixtures thereof, wherein the alkanoyl taurate is also in the examples actually sodium methyl cocoyl taurate.

Patent CN109481352 also relates to the use of sodium methyl cocoyl taurate; patent CN 111135103 also uses fatty acyl methyl taurate.

To date, the existing chemical substance list IECSC in China and the used cosmetic raw material catalog in various versions of China have not listed cocoyl taurate therein. Therefore, products using the alkanoyl taurate as the main surfactant do not exist in the market.

It is worth noting that most of the above patents aim to replace sulphate, but no further experimental studies have been made on the mildness of the related products.

Aiming at the problems of strong irritation and lack of further research on the mildness of products in various compositions in the prior art, a personal care composition with good mildness is urgently needed to be found.

Disclosure of Invention

The invention provides a personal care composition suitable for adults and children at the same time aiming at the problems in the prior art, the personal care composition takes alkanoyl taurate as a main anionic surfactant, has excellent performances in the aspects of viscosity, transparency, conditioning property, foam and the like, has good mild performance and is suitable for children.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the present invention provides a personal care composition comprising the following raw materials: n-alkanoyl taurates, amphoteric surfactants, non-sulphate anionic and/or nonionic surfactants, cationic polymers, benefit agents, acid-base modifiers and preservatives.

Further, the personal care composition comprises the following raw materials in percentage by weight:

(a) 1-20% of N-alkanoyl taurate

(b) 0.5-20% of amphoteric surfactant

(c) 0.1-10% non-sulfate anionic surfactant and/or non-ionic surfactant

(d) 0.05-2% of cationic polymer

(e) 0.1-10% of a benefit agent

(f) 0.05-2% of acid-base regulator

(g) 0.01-3% of preservative.

Preferably, the personal care composition comprises the following raw materials in percentage by weight:

(a) 3-15% of N-alkanoyl taurate

(b) 1-10% of amphoteric surfactant

(c) 0.1-10% non-sulfate anionic surfactant and/or non-ionic surfactant

(d) 0.05-2% of cationic polymer

(e) 0.1-10% of a benefit agent

(f) 0.05-2% of acid-base regulator

(g) 0.01-3% of preservative.

Further, the structural formula of the N-alkanoyl taurate is:

wherein R is a saturated or unsaturated hydrocarbon group of C7-C21, which contains a branched chain or no branched chain; m is an alkali metal ion, an alkaline earth metal ion or organic ammonia; preferably, R is a C7-C18 saturated or unsaturated hydrocarbon radical, containing a single carbon chain or mixed carbon chains. Further preferred is cocoyl taurate.

Further, the amphoteric surfactant comprises one or more of cocamidopropyl betaine, alkyl sulfobetaine, alkyl hydroxysulfobetaine, amphoteric hydroxypropyl sulfonate, alkyl amphoacetate, and alkyl amphodiacetate.

Further, the non-sulfate anionic surfactant comprises one or more of the following raw materials: sodium, ammonium or potassium salts of hydroxypropyl sulfonates; sodium, ammonium or potassium isethionate; sodium, ammonium or potassium salts of sulfonates; sodium, ammonium or potassium salts of ethersulfonates; sodium, ammonium or potassium salts of sulfosuccinates; sodium, ammonium or potassium salts of sulfoacetates; sodium, ammonium or potassium glycinate salts; sodium, ammonium or potassium sarcosinate salts; sodium, ammonium or potassium salts of glutamate; sodium, ammonium or potassium salts of alanine salts; sodium, ammonium or potassium salts of carboxylic acid salts; sodium, ammonium or potassium salts of acylmethyltaurine; sodium, ammonium or potassium salts of phosphoric acid esters; the nonionic surfactant may be selected from one or more of alkyl polyglucoside, alkyl glycoside, acyl glucamide, glyceryl laurate, cocamide methyl MEA and cocamide MEA.

Further, the cationic polymer comprises one or more of cationic guar gum, cationic cellulose, cationic synthetic homopolymers, and cationic synthetic copolymers; polyquaternium 10 is preferred.

Specifically, the benefit agents are: an additive for skin or hair benefits.

Further, the benefit agent comprises one or more of grease, a humectant, a plant extract and vitamins.

Further, the preservative comprises sodium benzoate and/or benzoic acid; the pH adjusting agent comprises an acid.

Further, the personal care composition comprises 60-95% water by weight percentage.

Further, the present invention also provides a method of preparing the personal care composition described above, characterized in that: the method comprises the following steps: uniformly dispersing a cationic polymer in water, adding N-alkanoyl taurate, a non-sulfate anionic surfactant or a nonionic surfactant and an amphoteric surfactant, stirring and heating until all raw materials are uniformly dispersed and transparent; adding acid and alkali regulator to regulate pH, cooling, and adding antiseptic and beneficial agent.

Further, the heating temperature is 70-80 ℃; the temperature reduction refers to the temperature reduction to be below 50 ℃.

Further, the personal care compositions of the present invention can be used in laundry care products.

The technical effects obtained by the invention are as follows:

the invention belongs to a sulfate-free product, and the personal care composition which takes the alkanoyl taurate as the main anionic surfactant not only can conveniently realize the performances of viscosity, transparency, conditioning, foam and the like, but also can provide a very good mild performance and is suitable for children.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

Before the present embodiments are further described, it is to be understood that the scope of the invention is not limited to the particular embodiments described below; it is also to be understood that the terminology used in the examples is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention.

When numerical ranges are given in the examples, it is understood that both endpoints of each of the numerical ranges and any value therebetween can be selected unless the invention otherwise indicated. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It should be noted that the raw materials used in the present invention are all common commercial products, and thus the sources thereof are not particularly limited.

Examples 1 to 5

The specific compositions and contents of the compositions of examples 1 to 5 of the present invention are shown in Table 1 (in terms of weight percent).

TABLE 1

The preparation method of each embodiment comprises the following steps: uniformly dispersing a cationic polymer in water, adding N-alkanoyl taurate, an anionic surfactant, an amphoteric surfactant and a nonionic surfactant, stirring and heating to 75 ℃ to uniformly disperse and transparent all raw materials; adding acid and alkali regulator to regulate pH to 5, cooling to below 50 deg.C, and adding antiseptic and beneficial agent.

Comparative example 1

The commercial shampoo for children is a two-in-one shampoo for children and a shower bath.

Comparative example 2

The commercially available transparent shampoo for adults contains no silicon water-moistening shampoo.

Comparative example 3

The only difference from example 1 is that the N-alkanoyl taurate was replaced by an equivalent amount of sodium methylcocoyl taurate.

Comparative example 4

The only difference from example 1 is that the N-alkanoyl taurate was replaced by the same amount of sodium lauryl sulfate.

First, the viscosity, the amount of foam and the transparency of the composition of the invention are measured

The test method comprises the following steps:

(1) viscosity:

the viscosity and flow properties of the liquid product were determined according to GB/T15357 rotational surfactant and detergent viscometer, and measured at 25 ℃ was chosen.

For personal care products, a viscosity suitable to avoid free running is required, typically a viscosity in excess of 2000 mPas.

(2) Foaming:

testing an instrument: SITA foam tester

The test method comprises the following steps: 2g of the composition in each example were taken, 150mg/kg of hard water was added to 500ml, the mixture was stirred at a constant temperature of 40 ℃ and 1000rpm for 30 seconds, and the amount of foam was recorded.

As a personal care cleansing product, it is required to have a suitable foaming capacity, and generally more than 800mL of foam is required.

(3) And (3) transparency:

testing an instrument: 721 visible spectrophotometer

The test method comprises the following steps: the light transmittance at a wavelength of 600nm was measured for each example, and the light transmittance exceeding or equal to 85% was recorded as transparent, indicated by ∘, and the light transmittance below 85% was recorded as opaque, indicated by x.

The test results are counted in table 2.

TABLE 2

Examples of the invention	Viscosity (mPa. s)	Amount of foam (mL)	Is transparent
				Example 1	4000	1240	○
Example 2	6800	1220	○
				Example 3	3820	1150	○
Example 4	2250	1090	○
				Example 5	3500	1070	○
Comparative example 1	1080	670	○
				Comparative example 2	3700	780	○
Comparative example 3	460	970	×
				Comparative example 4	7500	1030	○

From the results in table 2, it is clear that the composition of the present invention can easily achieve a balance of viscosity, foam, and transparency.

Comparative example 1 was a shampoo for children, and had a significantly lower viscosity than a general shampoo for adults (requiring more than 2000mPa · s), and also had a small amount of foaming.

Comparative example 2 was an adult shampoo, and the viscosity was acceptable, but the amount of foam was also small.

In comparative example 3, the sodium methyl cocoyl taurate is obviously different from the sodium cocoyl taurate in performance, and the same proportion is difficult to realize satisfactory viscosity and transparency.

Comparative example 4, a sulfate surfactant, exhibited excellent properties in terms of thickening performance (viscosity) and foam, although the foam was slightly inferior to the combination of sodium cocoyl taurate, it was also good.

Secondly, the method for testing the mildness of the composition comprises the following steps: 6 parallel samples are set for each group by adopting an IS scoring method according to an SN/T2329-2009 eye irritation/corrosiveness chick embryo chorioallantoic membrane test, and the results are counted in a table 3.

TABLE 3

As can be seen from the above table, the compositions of the present invention achieve substantially non-irritating levels

The commercially available silicone oil-free adult shampoo (comparative example 2) is light in irritation and is not suitable for children;

similarly, the sulfate combination of comparative example 4 also exhibited strong irritation and was not suitable for children.

Third, evaluation of Hair combing Performance test

Testing an instrument: INSTRON static carding machine

The test method comprises the following steps:

the wet combing test was performed on an INSTRON static combing machine using natural untreated asian hair tresses, washed to no foam with examples 1-5 and comparative examples 1, 2 and 4, respectively. Then, the hair tresses were naturally dried at room temperature of 25 ℃ and humidity of 60%, and then dry combing property test was performed. And calculating the combing efficiency improvement rate of the dry hair and the wet hair according to the combing work of the dry hair and the wet hair twice before and after each hair bundle.

TABLE 4

Test object	Wet hair combing work (gf-mm)	Wet hair combing performance improvement rate	Hair drying combing work (gf-mm)	Rate of improvement in dry hair combing performance
					Example 1	78.3	12％	81.7	11％
Example 2	79.2	11％	79	14％
					Example 3	76.6	14％	79.5	14％
Example 4	70.7	21％	71.9	22％
					Example 5	70.3	21％	72.8	21％
Comparative example 1	95.5	-7％	116.8	-27％
					Comparative example 2	89.4	-	92.1	-
Comparative example 4	108.5	-21％	127.3	-38％

Table 4 shows the hair combing force test data of examples 1-5 and comparative examples 1, 2, 4.

It is evident from the data in table 4 that examples 1-5 have relatively good combing properties on hair, even significantly better than the commercial product (comparative example 2).

Commercial children's product (comparative example 1) had the worst combing performance, especially dry combing;

the dry combing performance of the combination of sulfates (comparative example 4) was also very poor.

Fourth, application experiment test

The test method comprises the following steps: 50 volunteers, 25 male and female, respectively, aged 20-50 years were washed 3 times in each week for examples 1-5 and comparative examples 1-2, respectively. Then scored, 5 for good, 4 for good, 3 for acceptable, 2 for not good, 1 for very poor. The results are tabulated in table 5.

TABLE 5

Examples of the invention	Foam	Wet combing property	Dry combing property	Eye irritation	Total score
						Example 1	4.86	4.02	4.03	4.23	4.29
Example 2	4.60	4.19	4.07	4.46	4.33
						Example 3	4.24	4.12	4.16	4.01	4.13
Example 4	4.04	4.27	4.47	4.59	4.34
						Example 5	4.11	4.30	4.37	4.61	4.35
Comparative example 1	2.56	3.19	3.11	4.21	3.27
						Comparative example 2	3.60	4.03	3.95	3.55	3.78

As can be seen from the above table, when the shampoo for children is used by adults, wet combing is poor, and dry combing is not good. The transparent shampoo for people has slightly good combing property and poor performance. In conclusion, by adopting the scheme of the application, the requirements of children consumers on the mild safety and the requirements of adults consumers on the performances of carding property, foam, moisture retention and the like can be met simultaneously.

Finally, it should be noted that the above-mentioned contents are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, and that the simple modifications or equivalent substitutions of the technical solutions of the present invention by those of ordinary skill in the art can be made without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A personal care composition characterized by: the method comprises the following raw materials: n-alkanoyl taurates, amphoteric surfactants, non-sulphate anionic and/or nonionic surfactants, cationic polymers, benefit agents, acid-base modifiers and preservatives.

2. The personal care composition of claim 1, characterized in that: the composite material comprises the following raw materials in percentage by weight:

(a) 1-20% of N-alkanoyl taurate

(b) 0.5-20% of amphoteric surfactant

(c) 0.1-10% non-sulfate anionic surfactant and/or non-ionic surfactant

(d) 0.05-2% of cationic polymer

(e) 0.1-10% of a benefit agent

(f) 0.05-2% of acid-base regulator

(g) 0.01-3% of preservative.

3. The personal care composition of claim 1, characterized in that: the composite material comprises the following raw materials in percentage by weight:

(a) 3-15% of N-alkanoyl taurate

(b) 1-10% of amphoteric surfactant

(c) 0.1-10% non-sulfate anionic surfactant and/or non-ionic surfactant

(d) 0.05-2% of cationic polymer

(e) 0.1-10% of a benefit agent

(f) 0.05-2% of acid-base regulator

(g) 0.01-3% of preservative.

4. The personal care composition of claim 1, characterized in that: the structural formula of the N-alkanoyl taurate is as follows:

wherein R is a saturated or unsaturated hydrocarbon group of C7-C21, which contains a branched chain or no branched chain; m is an alkali metal ion, an alkaline earth metal ion or organic ammonia; preferably, R is a C7-C18 saturated or unsaturated hydrocarbon group, containing a single carbon chain or mixed carbon chains; further preferred is cocoyl taurate.

5. The personal care composition of claim 1, characterized in that: the amphoteric surfactant comprises one or more of cocamidopropyl betaine, alkyl sulfobetaine, alkyl hydroxy sulfobetaine, amphoteric hydroxypropyl sulfonate, alkyl amphoacetate and alkyl amphodiacetate.

6. The personal care composition of claim 1, characterized in that: the non-sulfate anionic surfactant comprises one or more of the following raw materials: sodium, ammonium or potassium salts of hydroxypropyl sulfonates; sodium, ammonium or potassium isethionate; sodium, ammonium or potassium salts of sulfonates; sodium, ammonium or potassium salts of ethersulfonates; sodium, ammonium or potassium salts of sulfosuccinates; sodium, ammonium or potassium salts of sulfoacetates; sodium, ammonium or potassium glycinate salts; sodium, ammonium or potassium sarcosinate salts; sodium, ammonium or potassium salts of glutamate; sodium, ammonium or potassium salts of alanine salts; sodium, ammonium or potassium salts of carboxylic acid salts; sodium, ammonium or potassium salts of acylmethyltaurine; sodium, ammonium or potassium salts of phosphoric acid esters; the nonionic surfactant may be selected from one or more of alkyl polyglucoside, alkyl glycoside, acyl glucamide, glycerol laurate, polyethylene glycol stearate, polyoxyethylene ether methyl glucose fatty acid ester, cocamide methyl MEA and cocamide MEA.

7. The personal care composition of claim 1, characterized in that: the cationic polymer comprises one or more of cationic guar gum, cationic cellulose, cationic synthetic homopolymers, and cationic synthetic copolymers; preferably, the cationic polymer is polyquaternium 10.

8. The personal care composition of claim 1, characterized in that: the beneficial agent comprises one or more of oil, humectant, plant extract and vitamins.

9. A method of making a personal care composition according to any one of claims 1 to 8, characterized in that: the method comprises the following steps: uniformly dispersing a cationic polymer in water, adding N-alkanoyl taurate, a non-sulfate anionic surfactant or a nonionic surfactant and an amphoteric surfactant, stirring and heating until all raw materials are uniformly dispersed and transparent; adding acid and alkali regulator to regulate pH, cooling, and adding antiseptic and beneficial agent.

10. Use of a personal care composition according to any one of claims 1 to 8 in a daily chemical product.