CN113876685B

CN113876685B - Bath foam with fine and refreshing foam and moisturizing function

Info

Publication number: CN113876685B
Application number: CN202111334785.2A
Authority: CN
Inventors: 顾锦文; 张沪青; 赵志良; 董志彦
Original assignee: Shanghai Fenghua Daily Necessities Co ltd
Current assignee: Shanghai Fenghua Daily Necessities Co ltd
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2023-09-01
Anticipated expiration: 2041-11-11
Also published as: CN113876685A

Abstract

The application discloses a foam fine, smooth, refreshing and moisturizing bath foam which is prepared from the following raw materials in percentage by weight: 15-19 parts of fatty acid, 3-9 parts of amphoteric surfactant, 0.5-1.5 parts of nonionic surfactant, 3-7 parts of polyol, a proper amount of neutralizing agent (neutralization degree is 95-98%), 0.5-2 parts of pearling agent, 0.8-1 part of suspension stabilizer, 2-8 parts of skin conditioner, 0.01-0.1 part of metal chelating agent, 0.06-0.08 part of preservative, 0.5-1 part of essence and the balance of deionized water. Also discloses a preparation process of the bath lotion. The shower gel takes the soap base as the main surface active agent, adopts the polyquaternium-39 and the acid milk powder as the skin conditioning agent, improves the tightness and the astringency caused by excessive water loss of the skin in the cleaning process of the soap base, ensures that the foam is finer and finer, increases the foam stability, and finally ensures that the shower gel has good skin feel and rich foam experience while being easy to wash.

Description

Bath foam with fine and refreshing foam and moisturizing function

Technical Field

The application relates to the technical field of daily chemicals, in particular to a bath foam with fine, smooth, refreshing and moisturizing foam, and a preparation method thereof.

Background

With the improvement of economic development and living standard, the functional requirements of people on the shower gel are gradually changed from the cleaning effect which is originally pursued to the standard of skin feel experience as the selection of the shower gel, and the shower gel which is rich in foam, mild, moist and fresh feel is more prone to be obtained.

Currently, there are three general types of body washes commonly found on the market: (1) The surfactant is mainly compounded by surfactant, the pH value of the surfactant is close to the pH value of skin, the surfactant is mild to the skin, but the compound proportion is not well controlled, so that the feeling of greasiness and uncleanness is easily caused; (2) Soap base type soap is prepared by saponification reaction of fatty acid and alkali, the pH is alkaline, foam is rich and easy to wash, the soap base type soap is fresh and not greasy after washing, but skin is tight and astringent after drying, and the soap base type soap has certain irritation; (3) The surfactant and the soap base are compounded, so that the irritation of the soap base is reduced, the soap base is easy to wash and has rich foam, but the mixed shower gel in the market still has the problems of skin tightness after washing and poor foam.

Foam is a dispersion of a gas in a liquid, wherein the gas is the dispersed phase and the liquid is the dispersion medium. Studies have shown that there are three primary mechanisms of foam decay: liquid film drainage due to capillary pressure differences, combined growth of bubbles caused by gas diffusion (disproportionation phenomenon) and liquid film drainage down under gravity, and liquid film drainage and bubble combination are the two most common forms of causing foam decay. The number of foams and their texture give consumers different experiences, and research on how to enhance the quality and stability of foams is becoming increasingly interesting.

Prior patent application No. 202110083705 discloses a skin composition, a body wash, comprising the following components: lauric acid; palmitic acid; myristic acid; stearic acid; potassium hydroxide. The amount of long-chain fatty acid is more, the generated foam is smaller, but the long-chain fatty acid can cause unstable low-temperature blanking body, the fatty acid is easy to separate out, the original shape can not be recovered after the long-chain fatty acid returns to normal temperature, and meanwhile, the foam is not rich and fine enough, and the moisturizing effect is poor.

Therefore, the mixed bath foam provided by the application has good skin feel, is easy to wash, has fine and stable foam, and has important significance for developing the technology of washing cosmetics and improving the living standard of people.

Disclosure of Invention

The application aims to provide the bath foam with fine and fresh foam and moisture preservation, aiming at the problems of skin tightness and astringent feel caused by excessive water loss after washing of the soap base bath foam, and insufficient foam.

The bath foam disclosed by the application is fine, smooth, fresh and moist, and can overcome the tight feel and astringent feel of the skin after washing the soap-based bath foam, so that the foam is more abundant and fine. The application takes the polyquaternium-39 and the yoghurt powder as the skin conditioner, reduces the irritation caused by soap basic body, and the tightness and the astringency caused by skin transepidermal water loss, so that the foam is rich and finer, and meanwhile, the addition of the yoghurt powder is beneficial to the foam stabilization, and finally, the shower gel has good skin feel and abundant foam experience while being easy to wash.

The aim of the application can be achieved by the following scheme:

the application provides a bath foam with fine and refreshing foam and moisture preservation, which comprises fatty acid, amphoteric surfactant and skin conditioner; the skin conditioning agent comprises polyquaternium and yoghurt powder.

As one embodiment of the present application, the body wash further comprises nonionic surfactant, polyol, neutralizing agent, pearling agent, suspension stabilizer, metal chelating agent, preservative, essence, deionized water.

As an embodiment of the present application, the skin conditioning agent is present in an amount of 2% to 8% by weight of the body wash.

As one embodiment of the application, the content of the polyquaternium is 1-3% of the weight of the bath foam in percentage by weight; the content of the sour milk powder is 1-5% of the weight of the bath lotion. According to the application, the yogurt powder and the polyquaternium are added on the basic formula, so that the effect of the yogurt powder and the polyquaternium is better than that of the polyquaternium when the yogurt powder and the polyquaternium are added separately, and the synergistic effect is achieved.

As one embodiment of the application, the shower gel comprises the following components in parts by weight:

wherein, the addition amount of the neutralizing agent ensures that the neutralization degree is 95-98 percent; the sum of the mass parts of the components is 100 parts.

As one embodiment of the application, the polyquaternium is polyquaternium-39 and/or polyquaternium-7.

As an embodiment of the present application, the fatty acid is one or more of lauric acid, myristic acid, palmitic acid, stearic acid.

In some embodiments, the fatty acid is a mixture of palmitic acid and stearic acid; the mass ratio of the palmitic acid to the stearic acid is 58:42.

As an embodiment of the present application, the amphoteric surfactant is one or more of cocamidopropyl betaine, sodium lauroamphoacetate, and lauroamphoacetate. The addition of the amphoteric surfactant reduces the dry and irritating feel.

As an embodiment of the present application, the nonionic surfactant is cocamide MEA and/or cocamide DEA.

As an embodiment of the present application, the polyol is one or more of glycerin, propylene glycol, sorbitol.

As an embodiment of the present application, the neutralizing agent is potassium hydroxide. The neutralizing agent is used for neutralizing fatty acid and regulating the neutralization degree.

As an embodiment of the present application, the pearlizing agent is ethylene glycol distearate and/or ethylene glycol monostearate.

As one embodiment of the present application, the suspension stabilizer is acrylic acid (ester)/C _10-30 Alkanol acrylate cross-linked copolymers.

As an embodiment of the present application, the metal chelator is disodium EDTA and/or EDTA.

As an embodiment of the present application, the preservative is methylisothiazolinone and/or phenoxyethanol.

The application also provides a preparation method of the mixed shower gel, which comprises the following steps:

s1, mixing and stirring a neutralizing agent and deionized water, adding a polyol and a metal chelating agent, and heating to 70-75 ℃ to obtain a mixed solution A;

s2, heating fatty acid to 70-75 ℃, and adding a suspension stabilizer for dispersion to obtain a mixed solution B;

s3, slowly adding the mixed solution B into the mixed solution A, stirring at constant temperature for 20-40min, and performing saponification reaction;

s4, stopping heating after saponification is completed, adding a nonionic surfactant and a pearling agent, and uniformly stirring;

s5, adding an amphoteric surfactant when the temperature is reduced to 65-60 ℃, and uniformly stirring;

s6, adding a skin conditioner when the temperature is reduced to 50-45 ℃, and uniformly stirring;

and S7, adding essence and preservative when the temperature is reduced to 45-40 ℃, and uniformly stirring to obtain the foam-fine, fresh and moisture-preserving shower gel.

As one embodiment of the present application, the temperature of the constant temperature stirring in step S3 is 75-80 ℃.

In some embodiments, the polyol in step S1 is glycerol.

In some embodiments, in step S5, the mixture is cooled to 65 ℃.

In some embodiments, in step S6, the mixture is cooled to 50 ℃.

In some embodiments, in step S7, the mixture is cooled to 45 ℃.

As an embodiment of the application, the method comprises the steps of:

a1, mixing and stirring a neutralizer and water, adding glycerol and EDTA disodium, and heating to 70-75 ℃ to obtain a mixed solution A;

a2, heating the mixed fatty acid to 70-75 ℃, adding the acrylic acid (ester)/C10-30 alkanol acrylate cross-linked copolymer, and dispersing and stirring uniformly to obtain a mixed solution B;

a3, slowly adding the mixed solution B into the mixed solution A, stirring at a constant temperature of 75-80 ℃ for 20-30min, and performing saponification reaction;

a4, stopping heating after saponification is completed, adding cocoamide MEA and glycol distearate, and uniformly stirring;

a5, cooling to 65-60 ℃, adding cocamidopropyl betaine, and uniformly stirring;

a6, when the temperature is reduced to 50-45 ℃, adding the polyquaternium-39 and the yogurt powder, and uniformly stirring;

and A7, adding essence and preservative when the temperature is reduced to 45-40 ℃, and uniformly stirring to obtain the foam-fine, fresh and moist bath foam.

Compared with the prior art, the application has the following beneficial effects:

1. the application creatively takes the polyquaternium and the yoghurt powder as skin conditioning agents, the added polyquaternium can increase the tightness of foam, the added yoghurt powder ensures that the foam is finer, the stability of the foam is further increased by slowing down the liquid discharge speed of a bubble liquid film, and meanwhile, the synergistic effect of the polyquaternium and the yoghurt powder effectively reduces the loss of skin transepidermal water during cleaning, and the tightness and the astringency after cleaning are reduced.

2. By adding the amphoteric surfactant and the nonionic surfactant, the irritation brought by the soap base body is reduced, the foam amount is increased, the thickening effect is achieved, and finally the shower gel has good skin feel and rich foam experience while being easy to wash. Fatty acids play a critical role in imparting hydrophobicity to the epidermis, with the remaining fatty acids of the saponification reaction being beneficial to the skin.

3. According to the application, on the premise of adding a small amount of long-chain fatty acid, the cleaning force is not affected, and the yogurt powder and the polyquaternium are added while the material body is stable, so that the texture and stability of the foam can be improved, the skin transepidermal water loss can be reduced, and the use feeling is improved. When the shower gel is used to form foam, the foam channel is provided with the micro particles of the yoghurt powder and the micro particles of the yoghurt powder are combined with the polyquaternium, so that the foam is fine and smooth, and the shower gel is not tight and astringent after being washed, and has a good regulating effect on skin.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:

FIG. 1 is a photograph of comparative example 1 as a foam magnified 10 times under a microscope

FIG. 2 is a photograph of comparative example 2 as a foam at 10 x magnification under a microscope;

FIG. 3 is a photograph of comparative example 1 as a foam at 5 x magnification under a microscope;

FIG. 4 is a photograph of comparative example 2 as a foam at 5 x magnification under a microscope;

FIG. 5 is a photograph of foam of examples 1, 2, and 3 treated with a bubbler;

FIG. 6 is a photograph of foam of comparative examples 1, 2, 3 treated with a bubbler;

fig. 7 is a graph of foam change with time for example 2, example 4, example 5 and comparative example 3, where a is the foam graph at 0min after foaming, b is the foam graph at 30min after foaming, c is the foam graph at 50min after foaming, and d is the foam graph at 60min after foaming.

Detailed Description

The application will now be described in detail with reference to the drawings and specific examples. The following examples, which are presented to provide those of ordinary skill in the art with a detailed description of the application and to provide a further understanding of the application, are presented in terms of implementation and operation. It should be noted that the protection scope of the present application is not limited to the following embodiments, and several adjustments and improvements made on the premise of the inventive concept are all within the protection scope of the present application.

The reagents and starting materials used were purchased commercially, unless otherwise indicated. The experimental methods, in which specific conditions are not noted in the following examples, were selected according to conventional methods and conditions, or according to the commercial specifications.

Examples 1 to 6

The embodiment provides a mixed body wash with fine foam and good skin feel, which comprises the following preparation raw materials in parts by weight as 100 parts by total:

1. weight percent of raw materials of the examples

Note that: the percentage of the polyquaternium refers to the solid content of the two raw materials, and the total solid content of the polyquaternium-7 and the polyquaternium-39 with the dosage of 2.25 percent is the same, so the dosages of the two raw materials are different.

2. The preparation process comprises the following steps: taking example 2 as an example, (1) mixing and stirring potassium hydroxide and water, adding glycerol and EDTA-disodium, and heating to 70 ℃ to obtain a first mixed solution; mixing fatty acids, heating to 75deg.C, adding acrylic acid (ester)/C _10-30 After the alkanol acrylate cross-linked copolymer is dispersed, obtaining a second mixed solution; (2) Mixing and stirring the first mixed solution and the second mixed solution obtained in the step (1) at 80 ℃ for 25min, and performing saponification reaction; (3) Stopping heating after saponification is completed, adding the ethylene glycol distearate and the cocamide MEA into the mixed solution, cooling to 65 ℃, adding the cocamide propyl betaine, and uniformly stirring; (4) When the temperature is reduced to 50 ℃, adding the polyquaternium-39 and the yogurt powder, and uniformly stirring; (5) And after the temperature is reduced to 45 ℃, adding essence and preservative, and uniformly stirring to obtain the foam-delicate, fresh and moisture-preserving shower gel. Other examples were prepared in the same manner as in example 2, but with different proportions of the components. All examples have pH 9-10, heat resistance (40+ -1) deg.C for 24h, no oil-water separation phenomenon after recovering to room temperature, cold resistance at-10deg.C for 24h, no layering, coarsening and discoloration phenomenon after recovering to room temperature.

The bath foam disclosed by the application can effectively reduce the astringent feel and the tightening feel of a soap base system caused by excessive skin water loss in the cleaning process, and can improve the physical examination of skin feel and simultaneously still have good foam experience. After bathing, the bath foam is easy to wash, is not sticky and greasy, has no false slip, and brings fresh and pleasant feel after bathing.

Comparative examples 1 to 3

The preparation method of the body washes of comparative examples 1-3 is the same as that of example 2, but the formulation is different, and the raw material components are correspondingly added or reduced during the preparation process. Specifically, comparative example 1 was obtained without adding yogurt powder and polyquaternium-39 to the formulation of example 2. Comparative example 2 was obtained without adding polyquaternium-39 to the formulation of example 2. Comparative example 3 was obtained without adding yogurt powder to the formulation of example 2.

The yogurt powder is prepared by fermenting milk with lactobacillus, and can improve hair aesthetic feeling and skin compactness, make foam finer and more smooth, and increase foam stability. As shown in the drawings, which are pictures of the foam under a microscope, fig. 1 and 3 are foam pictures of comparative example 1 under a microscope, and fig. 2 and 4 are foam pictures of comparative example 2 under a microscope. After the yogurt powder is added, solid particles flow in a foam channel (as shown in fig. 2), and the movement speed of the yogurt powder particles is reduced due to the reduction of the space size at the foam nodes, so that the collision probability among the yogurt powder particles is improved to a certain extent, and the yogurt powder particles are promoted to form clusters. Then, along with the progress of the liquid discharge process, the size of the agglomerate in the foam channel is larger and larger, and once the size of the agglomerate exceeds the cross-sectional area of the node, the agglomerate is similar to a plug, so that the flow of liquid and lactic acid particles in the foam channel is blocked, the effect of delaying the liquid discharge of the foam is achieved, the service life of the foam is prolonged, and the stability of the foam is improved. The application plays a role in delaying foam liquid discharge by adding the yogurt powder, thereby prolonging the service life of the foam and improving the stability of the foam. As shown in fig. 5, the foam pictures of examples 1, 2 and 3 are shown from left to right, and as shown in fig. 6, the foam pictures of comparative examples 1, 2 and 3 are shown from left to right. Comparing the foam pictures (fig. 5 and 6) it was found that the addition of yogurt powder resulted in a more uniform and dense foam size. As can be seen from a comparison of comparative examples 1 and 3 in fig. 6, the addition of the polyquaternium can result in smaller foam; comparative example 3 compared with example 2, it can be seen that the foam of example 2 is finer and finer under the combined action of the yogurt powder and the polyquaternium.

Instrument efficacy evaluation and human sensory evaluation:

1) Skin stratum corneum moisture Content Analysis (CAP): corneumeter was used clinically to determine moisture content of the skin stratum corneum of the arm. The higher the water content value, the higher the water content of the skin cuticle, and the better the moisturizing effect of the product. From the table, the yogurt powder and the polyquaternium-39 can effectively avoid excessive loss of moisture of skin cuticle after the bath lotion is washed, maintain the moisture content of skin after washing, and further reduce the tightness and the astringency brought by the skin.

2) Foam stability test: example 2, example 4, example 5 and comparative example 3, which are comparative representatives, were selected for foam treatment. 3g of bath cream is taken and placed in a bubbler, 17g of distilled water is added for dilution and dissolution, bubbling action is carried out for 30 times by repeating up and down, 0.1g of foam is respectively taken and placed on a glass slide for observation, and photographing recording is carried out every 10 min. As shown in fig. 7, the glass slides in each graph are graphs of the foams of example 2, example 4, example 5 and comparative example 3 with time from left to right, and the 4 shower gels can maintain good foams at 30min, which indicates that the foam generated by the formulation is relatively stable as a whole. As the standing time becomes longer, the defoaming time can be significantly prolonged after the yogurt powder is added to the sample of example 2 (slide 1) as compared with the sample of comparative example 3 (slide 4), which indicates that the yogurt powder can effectively increase the stability of foam. Comparison of example 2 and example 4 (slide 2) shows that after the polyquaternium-39 is replaced by polyquaternium-7, the defoaming time of the foam is shortened, which indicates that the synergistic effect between polyquaternium-9 and the yogurt powder is better than the synergistic effect between polyquaternium-7 and the yogurt powder, so that the foam is more stable.

3) Human sensory evaluation. 25 volunteer testers 18 to 30 years old were selected for washing in the same manner and for the same period of time, one week for each sample. The tester evaluates the test according to his own feeling. The scoring criteria were 10 minutes, 10 minutes being the best, and 1 minute being the worst.

The specific cleaning method of the tester is as follows: the skin on the body is wetted by warm water, then the product of the application is poured into a proper amount of the skin-care gel, rubbed on the palm of the hand and applied to the whole body, the skin-care gel is gently washed for two minutes and then washed by clear water, and the above method is repeated for one time a day and is continuously washed for one week. The results are shown in Table 1.

Table 1 results of efficacy evaluation test of examples and comparative examples

The results show that in the examples where yogurt powder and polyquaternium were added, the proportion of raw materials within the scope of the present application was superior to the examples outside the scope of protection both in skin feel score and in reducing skin cuticle moisture (examples 5 and 6). Compared with other examples and comparative examples, the effect of example 2 is best, the skin trans-epidermal water loss can be reduced to the greatest extent, the astringent feeling and the tight feeling caused by the water loss are effectively reduced, the washing is easy, the skin is not fake and smooth, the foam is finer and finer, the skin feeling is better than that of the commercially available soap-based shower gel, the excellent conditioning property of the polyquaternium-39 and the acid milk powder in the fine, smooth and moisturizing foam shower gel disclosed by the application to the skin is demonstrated, meanwhile, the synergy with the components such as a mild surfactant and a polyol is achieved, the astringent feeling during soap base washing is effectively solved, the skin physical examination is improved, and meanwhile, the good foam experience is still achieved.

The embodiments are described above in order to facilitate the understanding and application of the present application by those of ordinary skill in the art. It will be apparent to those skilled in the art that various modifications can be made to these embodiments and that the general principles described herein may be applied to other embodiments without the use of inventive faculty. Therefore, the present application is not limited to the embodiments herein, and those skilled in the art, based on the present disclosure, may make improvements and modifications within the scope and spirit of the present application without departing from the scope and spirit of the present application.

Claims

1. The bath foam with fine and refreshing foam and moisturizing function is characterized by comprising a neutralizer and the following components in parts by weight:

the addition amount of the neutralizing agent ensures that the neutralization degree is 95% -98%; the sum of the mass parts of the components is 100 parts;

the skin conditioning agent comprises polyquaternium and yoghurt powder; the content of the polyquaternary ammonium salt is 1-3% of the weight of the bath foam; the content of the sour milk powder is 1-5% of the weight of the bath foam; the poly-quaternary ammonium salt is poly-quaternary ammonium salt-39 with the mass concentration of 30%;

the fatty acid is one or more of lauric acid, myristic acid, palmitic acid and stearic acid;

the amphoteric surfactant is one or more of cocamidopropyl betaine, sodium lauroyl amphoacetate and lauramidopropyl betaine; the nonionic surfactant is cocamide MEA and/or cocamide DEA;

the polyalcohol is one or more of glycerol, propylene glycol and sorbitol;

the suspension stabilizer is acrylic acid/C _10-30 Alkanol acrylate cross-linked copolymers.

2. The foam concentrate, refreshing and moisturizing body wash of claim 1 wherein the neutralizing agent is potassium hydroxide.

3. A method for preparing the foam-fine, fresh and moisture-keeping body wash according to claim 1, which is characterized by comprising the following steps: