Application of rhamnolipid in improving transparency and shampoo

Abstract

The invention discloses an application of rhamnolipid in improving transparency and a shampoo, particularly discloses an application of a rhamnolipid composition in improving transparency of a daily chemical product with a cationic conditioner, and discloses the shampoo which comprises a surfactant and the cationic conditioner, the surface active agent comprises rhamnolipid and a group consisting of other surface active agents except the rhamnolipid; the mass ratio of the rhamnolipid in the shampoo is more than 0.5%, and the mass ratio of the cationic conditioner in the shampoo is more than 0.01%. When the rhamnolipid is applied to the daily chemical product with the cationic conditioner, excellent transparency is shown, the transparency defect caused by the fact that a surfactant surfactant formula purely using a petrochemical source is used in cooperation with the cationic conditioner is overcome, and meanwhile the defect of the rhamnolipid in the aspect of foam is avoided; and the user experience of consumers is better.

Description

Technical Field

[0001] The invention relates to the technical field of shampoo preparation, and in particular to application of rhamnolipid in improving transparency and shampoo. Background Art

[0002] Rhamnolipids are a type of glycolipid biosurfactant produced by certain microorganisms (usually bacteria) and can also be cultured through a fermentation process. These glycolipids have a polar head group consisting of one or two rhamnose units and one or two hydrophobic tail groups consisting of hydrocarbon chains. The selection of bacteria (usually but not limited to Pseudomonas aeruginosa) and the optimization of fermentation conditions can produce different proportions of mono-rhamnolipids and di-rhamnolipids. Rhamnolipids have good surface activity, green sources, and are 100% biodegradable. They are a new generation of surfactants that are more in line with sustainable development. However, rhamnolipids also have technical barriers such as low foam volume, poor foam stability, and low thickening responsiveness when used alone.

[0003] At present, most shampoos on the market use a combination of surfactants derived from petrochemical sources. When compounded with cationic conditioners, they can improve the conditioning performance of the product, but they can also bring a series of problems to the product itself. For example: First, some products appear opaque as a whole and are prone to precipitating crystals or flocs locally, which cannot provide a transparent and pure appearance; second, the cleansing effect of the formula is too strong and irritating, which can easily cause a series of problems such as scalp inflammation, itching and frizziness; third, cationic conditioners may accumulate excessively on the scalp and hair while smoothing frizziness, causing problems such as oily scalp and hair loss.

[0004] Therefore, how to improve the transparency of the system while ensuring the appropriate cleaning power and foam performance of the system, so as to improve the shortcomings of transparency, irritation and accumulation problems caused by the use of petrochemical-derived surfactants and cationic conditioners alone, and give the product a better appearance and texture is a technical problem to be solved by the present invention. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is how to improve the defect of poor transparency caused by the simple use of petrochemical-derived surfactants and cationic conditioners, while avoiding the shortcomings of rhamnolipid itself in foam performance, and provide an application of rhamnolipid in improving transparency to solve the above problem.

[0006] Application of rhamnolipid in improving the transparency of daily chemical products with cationic conditioning agents.

[0007] The rhamnolipid component includes monorhamnolipid and / or dirhamnolipid, etc., which can be a single compound or a composition composed of multiple rhamnolipid compounds. The rhamnolipid added in the present invention is a commercially available product, which can achieve the purpose of improving the poor transparency caused by the compounding of a surfactant from a petrochemical source and a cationic conditioner. The above-mentioned rhamnolipid in the present invention can be compounded from various types of pure rhamnolipids, can also be obtained by screening and purifying the fermentation broth, and can also be obtained by adjusting the fermentation process to change the ratio of various rhamnolipids.

[0008] In some preferred embodiments, the amount of rhamnolipid added can be more than 0.5% of the total mass of the daily chemical product, for example, about 1%, about 5%, about 9%, about 10%, about 20% or any mass percentage interval. Addition within the above range can effectively improve the transparency of daily chemical products, but rhamnolipid is a slightly yellowish product with a slightly fruity smell. In order to reduce the impact on the color and smell of the system itself and achieve the effect of significantly improving transparency, in some more preferred embodiments, the amount of addition can be preferably 2-8%.

[0009] The function of the cationic conditioning agent in the daily chemical product is to improve the combing property of the hair, reduce the generation of static electricity on the hair, and give the hair a glossy and smooth feeling; the cationic conditioning agent includes but is not limited to polysiloxane quaternary ammonium salt, modified cellulose cationic polymer (such as polyquaternium salt, etc., preferably polyquaternium-6, polyquaternium-7, polyquaternium-10, polyquaternium-22, polyquaternium-37), cationic guar gum (guar gum hydroxypropyltrimethylammonium chloride), etc. The molecular weight and cationic substitution degree of cationic conditioning agent products on the market have a large range, among which: the larger the molecular weight, the higher the product viscosity; the higher the charge density, the stronger the antistatic effect and conditioning effect, and the greater the accumulation produced at the same time, and long-term use will cause the hair to be dull and sticky and greasy. In the present invention, polyquaternium-7 (PQ-7), polyquaternium-10 (PQ-10) and cationic guar gum (guar gum hydroxypropyltrimethylammonium chloride) are preferred.

[0010] In some preferred embodiments, the conventional amount of cationic conditioning agent in the daily chemical product accounts for more than 0.01%, for example, about 0.01%, about 0.02%, about 0.04%, about 0.05%, about 0.1%, about 0.5%, about 0.8% or any mass percentage interval. Preferably, the amount of the cationic conditioning agent can be 0.01-0.5% of the total mass of the daily chemical product, and under the mutual cooperation with rhamnolipid, even at a relatively high addition amount of the cationic conditioning agent, the effect of better transparency than the conventional shampoo formula can be achieved, and rhamnolipid can effectively reduce the accumulation of cationic conditioning agents on the hair and scalp.

[0011] In some optional embodiments, the daily chemical product may also include a surfactant of petrochemical origin.

[0012] In some optional embodiments, the pH of the daily chemical product at 25° C. is in the range of 2.5-7.5.

[0013] The daily chemical product in the present invention is preferably a product for personal care, more preferably a product for hair care, body care or hand care. As the most preferred solution, the daily chemical product is shampoo.

[0014] The present invention also provides a shampoo, comprising a surfactant and a cationic conditioning agent, wherein the surfactant comprises a rhamnolipid and a surfactant of petrochemical origin; the added mass proportion of the rhamnolipid in the shampoo is more than 0.5%; the added mass proportion of the cationic conditioning agent in the shampoo is more than 0.01%.

[0015] The petrochemical-derived surfactant includes a combination of one or more of anionic surfactants, zwitterionic surfactants, and nonionic surfactants.

[0016] The anionic surfactant is selected from the group consisting of alkyl sulfates, fatty alcohol ether sulfates, alkylbenzene sulfonates, alkane sulfonates, olefin sulfonates, alkyl ether sulfonates, glyceryl ether sulfonates, methyl ester sulfonates, sulfonic fatty acids, glyceryl ether sulfates, alkyl ether sulfates, hydroxy mixed ether sulfates, monoglyceride (ether) sulfates, fatty acid amide (ether) sulfates, monoalkyl sulfosuccinates, dialkyl sulfosuccinates, monoalkyl sulfosuccinamates, dialkyl sulfosuccinamates, sulfotriglycerides, amides, ether carboxylic acids and salts thereof, fatty acid isethionates, fatty acid sarcosinates, fatty acid taurates, N-acylamino acids, alkyl oligosaccharide sulfates, and alkyl oligosaccharide carboxylates. The added mass proportion of anionic surfactant in shampoo is 1-40%, for example: it can be about 1%, about 2%, about 5%, about 7%, about 9%, about 10%, about 12%, about 15%, about 16%, about 20%, about 30%, about 40% or any mass percentage interval. The above-mentioned anionic surfactant is low in price, strong in decontamination and degreasing power, and good in foaming property. However, when the dosage of anionic surfactant is high, the degreasing power of the system will be too strong, and long-term use will damage the scalp barrier, which may cause dry and frizzy hair, split ends and hair loss, so the amount of anionic surfactant should be kept appropriate. In some more preferred embodiments, the amount can be preferably 4-20%.

[0017] The zwitterionic surfactant is selected from a combination of one or more of betaine-type amphoteric surfactants and / or imidazoline-type amphoteric surfactants and / or amine oxide-type amphoteric surfactants. Wherein, the betaine-type amphoteric surfactant includes a combination of one or more of carboxylic acid betaine, sulfonic acid betaine, phosphate betaine, sulfate betaine, and alkyl betaine, such as cocamidopropyl betaine, lauryl hydroxysulfo betaine, lauryl hydroxysulfo betaine, etc. The imidazoline-type amphoteric surfactant includes a combination of one or more of lauryl amphoacetate sodium, coconut oil amphoacetate sodium, lauroyl amphodiacetate disodium, and coconut oil amphodiacetate disodium. The mass proportion of the above-mentioned zwitterionic surfactant in shampoo is 0.1-45%, for example: it can be about 2%, about 5%, about 7%, about 9%, about 10%, about 10.5%, about 14%, about 16%, about 20%, about 30%, about 40%, about 45%, or it can be any mass percentage interval. Among them, when anionic surfactants (such as fatty alcohol ether sulfates) are combined with zwitterionic surfactants (such as cocamidopropyl betaine), the irritation of anionic surfactants to skin and eyes can be effectively reduced and the viscosity of the system can be increased. However, excessive addition of zwitterionic surfactants in the system will reduce the foaming performance. Therefore, in some preferred embodiments, the amount of the zwitterionic surfactant is preferably 1-20%.

[0018] The nonionic surfactant is selected from a combination of one or more of alkyl glycosides, alkanolamides, fatty alcohol polyoxyethylene ethers, fatty acid polyoxyethylene esters, polyoxyethylene alkylamines, polyoxyethylene alkylolamides, polyol esters, and polyol esters. The nonionic surfactant is added to the shampoo in an amount of 0.1-30% by mass, for example, about 0.2%, about 0.5%, about 4%, about 7%, about 10%, about 15%, about 20%, about 25%, about 30% or any mass percentage range; the nonionic surfactant is preferably added to the shampoo in an amount of 1-10% by mass.

[0019] The shampoo of the present invention may also contain conventional additives, including but not limited to solubilizers, thickeners, brighteners, anti-dandruff and antipruritic agents, moisturizers, preservatives, pH regulators, flavors, pigments, and the like.

[0020] The technical solution of the present invention has the following advantages: 1. The present invention provides a kind of rhamnolipid for improving the transparency of daily chemical products with cationic conditioning agents, wherein rhamnolipid is a biosurfactant, has good biodegradability, lower toxicity and environmental compatibility, and has the advantages of greener and safer fermentation sources, and has product source advantages compared to petrochemical surfactants; and, when rhamnolipid is applied to daily chemical products with cationic conditioning agents, it shows excellent transparency, improves the transparency defect of the compound formula of petrochemical surfactants and cationic conditioning agents, and has better consumer experience. Specifically, the mechanism of improving transparency may be that the accumulation of cationic conditioning agents is very sensitive to the types and proportions of the main surfactants, auxiliary surfactants and salts used in combination. Since rhamnolipid itself has a large molecular weight and an anionic-nonionic structure conversion occurs under different acid-base conditions, it is more difficult to form stable micelles compared to ordinary anionic / zwitterionic / nonionic surfactants. After adding a daily chemical product system with a cationic conditioning agent, the transparency of the system can be improved by changing the size of the micelles of the original system.

[0021] 2. The shampoo provided by the present invention not only improves the defect of poor transparency when anionic / zwitterionic / nonionic surfactants are used in combination with cationic conditioners, but also changes the electrical properties of the surfactant micelles bound to the molecular chain segments of the cationic conditioners by introducing rhamnolipids, which can effectively shield part of the charges of the anionic surfactants and cationic conditioners, thereby adjusting the charge density of the shampoo system, avoiding the excessive action of the cationic conditioners to form flocculation and cause their accumulation on the scalp, and reducing the risks of oily scalp, itchy scalp and hair loss; at the same time, the shampoo of the present invention exhibits a suitable cleaning feeling, and can solve the balance between the greasy feeling caused by the accumulation of cationic conditioners and the smooth feeling of lack of combing properties from the source.

[0022] 3. The shampoo provided by the present invention, when using rhamnolipid alone as a surfactant, has a lower foam richness than most anionic surfactants and zwitterionic surfactants derived from petrochemical sources. However, by using rhamnolipid in combination with surfactants derived from petrochemical sources, the shortcoming of rhamnolipid alone in terms of poor foam richness can be effectively compensated, so that the final product exhibits good foam properties and a dense and rich foam texture. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a foam performance diagram of Example 1 of the present invention; Figure 2 This is a foam performance diagram of Example 2 of the present invention; Figure 3 This is a foam performance diagram of Example 3 of the present invention; Figure 4 This is a foam performance diagram of Example 4 of the present invention; Figure 5 The figure shows the foam quality map before and after adding rhamnolipid in the present invention. DETAILED DESCRIPTION

[0025] The following examples are provided for a better understanding of the present invention, but are not intended to limit the best mode of implementation, nor to limit the content and protection scope of the present invention. Any product identical or similar to the present invention obtained by anyone under the inspiration of the present invention or by combining the features of the present invention with other prior arts shall fall within the protection scope of the present invention.

[0026] If no specific experimental steps or conditions are specified in the examples, the conventional experimental steps or conditions described in the literature in the field can be used. If no manufacturer is specified for the reagents or instruments used, they are all conventional reagent products that can be obtained commercially.

[0027] The sources of raw materials used in the following examples and comparative examples are as follows: rhamnolipid was purchased from Wanhua Chemical, sodium laureth sulfate, cocamidopropyl betaine, alkyl glucoside, and phenoxyethanol were all purchased from BASF, sodium cocoyl isethionate was purchased from Yuantairun, sodium cocoyl isethionate and piroctone olamine salt were purchased from Klein, sodium lauroyl sarcosinate was purchased from Croda, sodium methyl cocoyl taurate, sodium cocoyl glutamate, and disodium lauryl sulfosuccinate were purchased from Kao of Japan, chitosan, hydrolyzed collagen, and hydrolyzed keratin were purchased from CITIC Chemical, sodium chloride and citric acid were purchased from Sinopharm, sodium xylene sulfonate and sodium benzoate were purchased from Aladdin, cationic guar gum, PQ-10, and PQ-7 were purchased from Dow Chemical, and methylisothiazolinone was purchased from Bioao Chemical.

[0028] Example 1: Effect of rhamnolipid on transparency improvement.

[0029] This example shows that replacing the original petrochemical-derived surfactant in the formula with rhamnolipid significantly improves the defect of poor transparency when the petrochemical-derived anionic / zwitterionic / nonionic surfactants are used in combination with cationic conditioners. All concentrations in the application examples are given in mass percentages, and the raw material composition is shown in Table 1.

[0030] Table 1

[0031] According to the weight parts in the above table, weigh the surfactants in turn, add them into a water bath, heat and stir to 70°C to make them completely dissolved, cool to 50°C, add the pre-dispersed cationic conditioner and stir evenly, return to room temperature, adjust the pH to 6.3 with citric acid (the pH value range of conventional shampoo is 5.5-6.5), add water to 100 parts by weight to obtain shampoo, and the shampoo formulas described below are also prepared by this process.

[0032] The shampoo samples prepared in the above-mentioned comparative example 1a, comparative example 1d, and examples 1a-d were centrifuged and defoamed for 5 minutes at 5000 rpm in a centrifuge, and then the transparency of the shampoo was measured using a UV-visible spectrophotometer at a wavelength of 420 nm and deionized water as a reference sample. The samples were measured 3 times and the average value was taken. The test data are shown in Table 2 below.

[0033] Table 2

[0034] In order to alleviate the frizziness and dryness of hair caused by damage, cationic conditioning agents (cationic guar gum, PQ-10, PQ-7, etc.) are often added to shampoo to be adsorbed on the surface of damaged hair through electrostatic action. However, the increase in the amount of cationic addition will reduce the transparency of the system and also bring about a slippery and uncomfortable feeling after washing. Therefore, the amount of cationic conditioning agent added is preferably 0.01-0.5%. By adding rhamnolipid to the shampoo of the present invention with cationic conditioning agents, the transparency can be significantly improved. The reason why the present invention can improve the transparency of the system may be that the sugar ring and dissociated carboxyl group in the rhamnolipid structure can effectively change the charge density and binding state of the system, avoid salting out, and reduce the transparency loss caused by the increase in the amount of cationic addition.

[0035] Specifically, as shown in Tables 1-2 above, in different shampoo formulas, the purpose of improving the transparency of the system can be achieved when the added mass proportion of rhamnolipid is ≥0.5%. When the amount of cationic conditioning agent added is relatively large (for example: Comparative Example 1d), insoluble floccules will precipitate and the transparency of the system will be significantly reduced. At this time, adding a small amount of rhamnolipid can bring about a significant improvement in transparency; combined with Examples 1a-c, it can be seen that: the preferred addition amount of rhamnolipid is 2-8%, and it can still have good transparency when the system conditioning agent is at a relatively high level. In summary, the present invention can achieve the effect of improving transparency when rhamnolipid is added to a shampoo with a cationic conditioning agent; when rhamnolipid and cationic conditioning agent are within the preferred range disclosed in the present invention, the effect of significantly improving transparency can be achieved.

[0036] Example 2-4: Effect of rhamnolipid on transparency improvement in shampoo formulations.

[0037] The specific configurations of the shampoo preparations in each embodiment are shown in Tables 3 to 5. Table 3 shows the specific proportions of the shampoo preparations in Embodiment 2, Table 4 shows the specific proportions of the shampoo preparations in Embodiment 3, and Table 5 shows the specific proportions of the shampoo preparations in Embodiment 4.

[0038] Table 3

[0039] Table 4

[0040] Table 5

[0041] The preparation method of the samples of the shampoo formulations in the above table is the same as that of Example 1.

[0042] The transparency detection method is as follows: The shampoo samples prepared in the above embodiments and comparative examples were centrifuged at 5000 rpm for 5 minutes to defoam, and then the transparency of the shampoo was measured using an ultraviolet-visible spectrophotometer at a wavelength of 420 nm and deionized water as a reference sample. The samples were measured 3 times and the average value was taken. The test data are shown in Table 6 below.

[0043] Table 6

[0044] According to the data in Table 6, it can be concluded that the transparency of the combination formula of rhamnolipid and other surfactants including at least one of anionic surfactants, zwitterionic surfactants and nonionic surfactants is improved to varying degrees due to the addition of rhamnolipid.

[0045] What is more noteworthy is that the combination of surfactants with excessive irritation will affect the integrity of the lipid barrier in the stratum corneum of the skin, causing the natural moisturizing factors to be partially removed and increasing the possibility of irritating chemicals penetrating into the epidermis, leading to skin inflammation and itching. The existing scheme usually adopts the method of increasing the proportion of zwitterionic surfactants / nonionic surfactants or surfactants with low red blood cell (RBC) detection data in the system to reduce the risk of shampoo causing irritation to the scalp. In the present invention, rhamnolipids are more green and natural in source and the product itself is mild and non-irritating, and will not cause hemolysis and corn protein swelling and denaturation. Therefore, the use of rhamnolipids added to the shampoo system not only improves transparency, but also significantly reduces the risk of irritation to the scalp caused by shampoo, which is especially suitable for people with sensitive scalp.

[0046] Test Example 1-3: Effect of rhamnolipid on improving overall washing feeling in shampoo preparations.

[0047] The samples of the shampoo preparations disclosed in Examples 1-4 were used to conduct sensory related performance (comprehensive washing feeling) tests, and the test items included: foam volume and foam stability, combing feeling during wet hair, dry hair detangling and conditioning performance, shampooing irritation, etc. The above test items are particularly important to consumers and are all consideration indicators of the present invention. The following is a relevant evaluation of each test item.

[0048] Test 1. Evaluation of foam performance: Use hard water to prepare 100g of 5% shampoo sample aqueous solution in a soymilk maker. Stir at high speed for 30 seconds. After whipping twice, pour the foam into a measuring cylinder immediately. Record the initial foam volume and the foam volume after 5 minutes. Repeat the test 3 times for each sample and take the average value.

[0049] When rhamnolipid is used alone, the foam performance is poor (the foam performance is between that of amphoteric surfactants and nonionic surfactants) and the foam stability is poor. Figure 1-Figure 4 The data results show that: according to the scheme of the present invention, the combination of rhamnolipids with other petrochemical surfactants and cationic conditioning agents will not cause a decrease in foam volume and loss of foam stabilization performance, but will increase the foam stabilization performance of the formula. Figure 5 It can be found intuitively that the addition of rhamnolipids can also effectively improve the density of foam. The cells can be seen to become smaller and more uniform, which can bring a more delicate washing and care experience. The density of foam can be understood as the number of initial bubbles per square millimeter in the system. Because rhamnolipids contain longer carbon chains and the spatial effect of sugar rings makes the size of foam formed in the system smaller, the macroscopic result leads to an increase in foam density, and the fineness also increases accordingly. Test 2: Evaluation of combing performance: A 50 cm long human hair piece was selected to simulate the shampooing process. Before the operation, a 10% sodium dodecyl sulfate (K12) aqueous solution was used to clean the hair to remove dirt on the surface. 5 mL of shampoo sample was evenly applied to the front and back of the hair piece and gently rubbed for 1 min. After rubbing and washing, the hair piece was rinsed with tap water for 1 min, and then the hair piece was clamped with the index finger and middle finger, and the excess water was filtered from top to bottom for wet combing test; the treated hair piece was hung on the combing instrument, and the wooden teeth of the wooden comb on the combing instrument passed through the hair piece evenly. The hair piece was fixed with a rubber ring to prevent the hair piece from leaving the wooden comb. The start button was pressed, and the wooden comb was combed from the root part of the hair piece to the tail part of the hair piece, and the friction during the combing process was recorded. Each sample was tested 3 times, the data was recorded, and the average value was taken. The hair piece was removed and left to stand overnight at a temperature of 25 °C and a humidity of 60%, and its dry combing performance was measured using the same method as above. The results of wet combing performance and dry combing performance test are shown in Table 7 below.

[0050] Table 7

[0051] It can be seen from the data in Table 7 that cationic conditioning agents can effectively improve the combability of hair, reduce the generation of hair static electricity, and give hair a better smooth feeling, but excessive accumulation of cationic conditioning agents will bring about a greasy feeling of incomplete cleaning. The shampoo prepared by the present invention changes the electrical properties of the surface active micelles bound to the molecular chain segments of the cationic conditioning agents by setting the preferred content of each component and introducing rhamnolipids, and adjusts the charge density of the shampoo system through the process of anionic-nonionic structure conversion of rhamnolipids in the formula, thereby avoiding the excessive action of cationic conditioning agents to form flocculation and cause its accumulation on the hair and scalp; at the same time, the shampoo of the present invention exhibits a suitable cleaning feeling, which can solve the balance between the residual greasy feeling of the cationic conditioning agent and the lack of combing smoothness from the source.

[0052] Test 3, evaluation of irritation: Use skin occlusive patch test, the selected area should not exceed 50mm 2 , qualified spot test equipment with a depth of about 1mm. In each embodiment, 15 qualified subjects were selected to participate in the test, and the experimental product was placed in the spot test chamber, with a dosage of about 0.020mL-0.025mL. The spot tester with the test object was applied to the curved side of the forearm of the subject with a hypoallergenic tape, and the palm of the hand was gently pressed to make it evenly applied to the skin for 24 hours, and the skin reaction was observed for 24 hours according to the skin reaction grading standard of the skin occlusion patch test.

[0053] When the skin reaction is +, it means there is no adverse reaction; when the skin reaction is ++, it means that a small amount of irritation can be felt, but no adverse reaction occurs; when the skin reaction is +++, it means that a stronger irritation can be felt, but no adverse reaction occurs; when the skin reaction is ++++, it means that a stronger irritation can be felt and an adverse reaction occurs.

[0054] The evaluation results of the irritation of each example and comparative example are shown in Table 8 below.

[0055] Table 8

[0056] The skin reactions of the shampoo provided by the present invention are all +, indicating that the shampoo is mild, safe and non-irritating to the skin.

[0057] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. Application of rhamnolipid in improving the transparency of daily chemical products with cationic conditioning agents.

2. The use according to claim 1, It is characterized in that The added mass proportion of the rhamnolipid in the daily chemical product is ≥0.5%; And / or, the cationic conditioning agent is added to the daily chemical product in an amount of ≥0.01% by mass.

3. The use according to claim 1, It is characterized in that The cationic conditioning agent includes one or more of modified cellulose-based cationic polymers, cationic guar gum, and polysiloxane quaternary ammonium salts.

4. The use according to claim 1, It is characterized in that The daily chemical products also include surfactants from petrochemical sources.

5. The use according to claim 4, It is characterized in that The pH of the daily chemical product at 25° C. is 2.5-7.

5.

6. The use according to any one of claims 1 to 5, It is characterized in that The daily chemical product is shampoo.

7. A shampoo comprising a surfactant and a cationic conditioning agent, It is characterized in that The surfactants include rhamnolipids and surfactants of petrochemical origin.

8. The shampoo according to claim 7, It is characterized in that The cationic conditioning agent is added to the shampoo at a mass ratio of ≥ 0.01%; And / or, the cationic conditioning agent is selected from a combination of one or more of polyquaternium-6, polyquaternium-7, polyquaternium-10, polyquaternium-22, polyquaternium-37, and cationic guar gum; And / or, the added mass proportion of the rhamnolipid in the shampoo is ≥0.5%; And / or, the petrochemical-derived surfactant includes a combination of one or more of anionic surfactants, zwitterionic surfactants, and nonionic surfactants.

9. The shampoo according to claim 8, It is characterized in that The anionic surfactant is selected from the group consisting of alkyl sulfates, fatty alcohol ether sulfates, alkylbenzene sulfonates, alkane sulfonates, olefin sulfonates, alkyl ether sulfonates, glyceryl ether sulfonates, methyl ester sulfonates, sulfo fatty acids, glyceryl ether sulfates, alkyl ether sulfates, hydroxy mixed ether sulfates, monoglyceride (ether) sulfates, fatty acid amide (ether) sulfates, monoalkyl sulfosuccinates, dialkyl sulfosuccinates, monoalkyl sulfosuccinamates, dialkyl sulfosuccinamates, sulfotriglycerides, amides, ether carboxylic acids and salts thereof, fatty acid isethionates, fatty acid sarcosinates, fatty acid taurates, N-acylamino acids, alkyl oligosaccharide sulfates, and alkyl oligosaccharide carboxylates. And / or, the zwitterionic surfactant is selected from a combination of one or more of betaine-type zwitterionic surfactants and / or imidazoline-type zwitterionic surfactants and / or amine oxide-type zwitterionic surfactants; wherein the betaine-type zwitterionic surfactant includes a combination of one or more of carboxylic acid betaine, sulfonic acid betaine, phosphate betaine, sulfate betaine, and alkyl betaine; the imidazoline-type zwitterionic surfactant includes a combination of one or more of sodium lauryl amphoacetate, sodium cocoyl amphoacetate, disodium lauroyl amphodiacetate, and disodium cocoyl amphodiacetate; And / or, the nonionic surfactant is selected from one or more combinations of alkyl glycosides, alkanolamides, fatty alcohol polyoxyethylene ethers, fatty acid polyoxyethylene esters, polyoxyethylene alkylamines, polyoxyethylene alkylolamides, polyol esters, and polypolyol esters; And / or, the anionic surfactant is added to the shampoo in an amount of 1-40% by mass; And / or, the zwitterionic surfactant is added to the shampoo in an amount of 0.1-45% by mass; And / or, the nonionic surfactant is added to the shampoo in an amount of 0.1-30% by weight.

10. The shampoo according to claim 9, It is characterized in that The anionic surfactant is added to the shampoo in an amount of 4-20% by mass; And / or, the zwitterionic surfactant is added to the shampoo in an amount of 1-20% by mass; And / or, the nonionic surfactant is added to the shampoo in an amount of 1-10% by weight; And / or, the added mass proportion of the rhamnolipid in the shampoo is 2-8%; And / or, the cationic conditioning agent is added to the shampoo in an amount of 0.01-0.5% by weight.

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