Viscosity improver and its use in adjusting the viscosity of daily chemicals

Abstract

The present invention relates to the field of daily chemical products, and provides a viscosity modifier and its use in adjusting the viscosity of daily chemical products. The viscosity modifier provided by the present invention can play a role in adjusting the viscosity and the like in daily chemical products. The viscosity modifier is composed of component A and optionally component B, wherein component A is one or more of glycolipids and their salts, and component B is selected from one or more of alkyl glycoside surfactants and surfactants with a benzene ring structure.

Description

Technical Field

[0001] The present invention relates to the field of daily chemical products, and particularly relates to a viscosity modifier and its use in adjusting the viscosity of daily chemical products. Background Art

[0002] The production technology of daily chemical products is currently very mature. However, in order to achieve a beautiful appearance, some personal care products will choose to match suspended substances such as petals, pearlescent powder, and soft beads. To ensure that the suspended substances do not settle for a long time, the viscosity of the product is usually increased, which not only greatly reduces the fluidity of the product during use, but also greatly increases the filling difficulty, resulting in an increase in cost. In addition, in the field of household care products, concentrated laundry detergents and laundry beads have gradually become popular among consumers. Due to the high content of surfactants, the viscosity of concentrated laundry detergents is usually much higher than that of ordinary laundry detergents. During use, it is not only difficult to control the dosage, but also greatly affects the dissolution rate of the product. For the quick wash mode, there is often a problem of residue. At the same time, concentrated laundry detergents and laundry beads are also prone to filling difficulties.

[0003] In the current technology, some use specific solvents to synergistically reduce the viscosity of the surfactant system. However, the solvents used in the formulation need to be compounded with multiple chemical components, and the operation process is relatively complex. Moreover, the addition of solvents greatly increases the requirements for surfactants, and the universality is low. At the same time, their components all come from petrochemical raw materials and are difficult to degrade. There are also some solutions that use the synergistic effect of cationic and anionic compounding to control the viscosity of body wash. However, they also have requirements for the types of surfactants, the application range is limited, and they can often only control the viscosity of the product at the source and have no clear effect on products that have already gelated. Summary of the Invention

[0004] The present invention provides a viscosity modifier and its use in adjusting the viscosity of daily chemical products. The viscosity modifier provided by the present invention can play a role in adjusting the viscosity and the like in daily chemical products.

[0005] To achieve its purpose, the present invention provides the following technical solutions:

[0006] On the one hand, the present invention provides a viscosity modifier, which is composed of component A and optionally component B. Among them, component A is one or more of glycolipids and their salts, and component B is selected from one or more of alkyl glycoside surfactants and surfactants with a benzene ring structure.

[0007] Preferably, the glycolipid is selected from one or more of rhamnolipid, sophorolipid, trehalolipid, glyceroglycolipid, mannosylerythritol lipid, and cellobiose lipid, and more preferably rhamnolipid.

[0008] Preferably, the surfactant with a benzene ring structure is selected from one or more of sodium dodecylbenzenesulfonate and sodium decylbenzenesulfonate;

[0009] and / or, the alkyl polyglycoside surfactant is selected from one or more of decyl glucoside, coconut glucoside, octyl glucoside, and stearyl glucoside.

[0010] In some embodiments, the viscosity modifier is the component A, preferably one or more of rhamnolipids and their salts;

[0011] Alternatively, the viscosity modifier is composed of the component A and the alkyl polyglycoside surfactant;

[0012] Alternatively, the viscosity modifier is composed of the component A and the surfactant with a benzene ring structure; preferably, the component A is one or more of rhamnolipids and their salts, and the surfactant with a benzene ring structure is sodium dodecylbenzenesulfonate.

[0013] In some embodiments, the viscosity modifier is composed of the component A and the component B in any mass ratio; for example, the mass ratio of the component A to the component B is 1000:1 to 1:1000; for example, the addition amounts of the component A and the component B are independently 0.05 - 30 parts by mass, preferably 0.1 - 10 parts by mass.

[0014] The present invention also provides the use of the above-mentioned viscosity modifier in adjusting the viscosity of daily chemicals.

[0015] Furthermore, the daily chemicals include personal care products or household care products, preferably cleaning and washing products;

[0016] Preferably, the daily chemicals are one or more of shampoo, body wash, hand sanitizer, and fabric cleaner; the fabric cleaner includes, for example, one or more of laundry detergent and laundry beads;

[0017] Preferably, the addition amount of the component A in the daily chemicals is 0.05 - 30 wt%, preferably 0.1 - 30%, preferably 0.1 - 25%, more preferably 0.1 - 16 wt%;

[0018] Preferably, the addition amount of the component B in the daily chemicals is 0 - 30%, for example 0.05 - 30 wt%, for example 0.05 - 25%, preferably 0.05 - 10 wt%.

[0019] In some embodiments, the daily chemicals are added with suspended matter, and the use also includes improving the suspension performance of the added suspended matter in the daily chemicals.

[0020] Further, the use also includes accelerating the dissolution rate of the daily chemical in water;

[0021] and / or, the daily chemical is a fabric detergent, and the use also includes improving the detergency of the fabric detergent.

[0022] In some embodiments, the daily chemical includes a water-soluble outer film, and the use also includes improving the dissolution performance of the daily chemical with the water-soluble outer film in water.

[0023] The technical solution provided by the present invention has the following beneficial effects:

[0024] In the present invention, component A (glycolipid and / or salt of glycolipid) is used as a viscosity modifier, or a viscosity modifier is composed of component A and component B. This viscosity modifier can play roles such as viscosity regulation in daily chemicals, can reduce the viscosity, improve the fluidity of the product, and at the same time facilitate reducing the difficulty in the production and filling processes of daily chemicals. Detailed Embodiments

[0025] To facilitate the understanding of the present invention, the present invention will be further described below in conjunction with embodiments. It should be understood that the following embodiments are only for better understanding the present invention, and do not mean that the present invention is limited only to the following embodiments.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The term "and / or" as used herein may include any and all combinations of one or more of the related listed items.

[0027] On the one hand, the present invention provides a viscosity modifier, which is composed of component A and optionally component B. Among them, component A is one or more of glycolipids and their salts, and component B is selected from one or more of alkyl glycoside surfactants and surfactants with a benzene ring structure.

[0028] In the present invention, component A can be one or more of glycolipids and salts of glycolipids. Among them, salts of glycolipids are, for example but not limited to, one or more of potassium salts, sodium salts, lithium salts, etc. of glycolipids, and preferably sodium salts of glycolipids.

[0029] In the present invention, glycolipid and / or salt of glycolipid is used as a viscosity modifier, or a viscosity modifier is composed of glycolipid and / or salt of glycolipid (i.e., component A) and component B. This viscosity modifier can play roles such as viscosity regulation in daily chemicals, can reduce the viscosity, improve the fluidity of the product, and at the same time facilitate reducing the difficulty in the production and filling processes of daily chemicals.

[0030] Preferably, the glycolipid is selected from one or more of rhamnolipid, sophorolipid, trehalolipid, glyceroglycolipid, mannosylerythritol lipid, cellobiose lipid, and more preferably rhamnolipid.

[0031] Preferably, the surfactant with a benzene ring structure is selected from one or more of sodium dodecylbenzenesulfonate and sodium decylbenzenesulfonate.

[0032] Preferably, the alkyl polyglycoside surfactant is selected from one or more of decyl glucoside, coconut oil glucoside, octyl glucoside, and stearyl glucoside.

[0033] In a preferred embodiment, the viscosity modifier is Component A, that is, the viscosity modifier is one or more of glycolipids and their salts, and more preferably the viscosity modifier is one or more of rhamnolipids and their salts.

[0034] In a preferred embodiment, the viscosity modifier is composed of Component A and an alkyl polyglycoside surfactant, and preferably Component A is one or more of rhamnolipids and their salts.

[0035] In a more preferred embodiment, the viscosity modifier is composed of Component A and a surfactant with a benzene ring structure. The inventors have found that when Component A (i.e., glycolipid and / or salt of glycolipid) is compounded with a surfactant with a benzene ring structure, the two can play a synergistic role, further compressing the gel range of the daily chemical product, significantly reducing the product viscosity, promoting dissolution in water, and improving the consumer experience. More preferably, Component A is one or more of rhamnolipids and their salts.

[0036] In an even more preferred embodiment, the viscosity modifier is composed of Component A and a surfactant with a benzene ring structure, and Component A is one or more of rhamnolipids and their salts, and the surfactant with a benzene ring structure is sodium dodecylbenzenesulfonate.

[0037] In one embodiment, the viscosity modifier is composed of Component A and Component B. For example, the addition amounts of Component A and Component B are independently 0.05 - 30 parts by mass, preferably 0.1 - 10 parts by mass;

[0038] For the viscosity modifier composed of component A and component B, component A and component B can be combined in any mass ratio as a viscosity modifier, for example, the mass ratio of component A and component B is 1000:1-1:1000, for example, the mass ratio of component A and component B is 1000:1, 600:1, 500:1, 400:1, 300:1, 200:1, 100:1, 50:1, 10:1, 4:1, 1:1, 1:4, 1:600, 1:10, 1:50, 1:100, 1:200, 1:300, 1:400, 1:500, 1:600, 1:1000 and the like.

[0039] Another aspect of the present invention provides the use of the viscosity improver described above in adjusting the viscosity of daily chemicals. The composition of the viscosity improver can be found in the above description, and will not be described in detail here.

[0040] Specifically, the viscosity improver consists of component A and optional component B, wherein component B is selected from one or more of alkyl glycoside surfactants and surfactants with a benzene ring structure, and component A is one or more of glycolipids and salts thereof.

[0041] In the present invention, the daily chemicals include, for example, personal care products or household care products. There is no particular restriction on the types of personal care products or household care products, for example, various daily chemicals with viscosity adjustment requirements, especially viscosity reduction requirements, preferably cleaning and washing products. In some examples, the daily chemicals are one or more of shampoo, shower gel, hand soap, and fabric detergent; the fabric detergent includes, for example, one or more of laundry detergent and laundry beads, and the laundry detergent may be, for example, concentrated laundry detergent. As for daily chemicals, it is well known in the art that one or more other ingredients may be included according to the application occasion or purpose, exemplarily including but not limited to: any one or a combination of at least two of active ingredients, thickeners, moisturizers, greases, film formers, pH regulators, dispersants, preservatives, fragrances, stabilizers, etc. In the present invention, the key is to add the viscosity modifier mentioned in the present invention to the daily chemicals to play a role in reducing viscosity. As for daily chemicals, those skilled in the art can prepare them specifically according to the application requirements through conventional techniques or common knowledge.

[0042] In some embodiments, the viscosity modifier is one or more of glycolipids and their salts, more preferably one or more of rhamnolipids and their salts. The inventors unexpectedly found through extensive research that glycolipid surfactants, especially preferably rhamnolipids, can effectively regulate the viscosity when applied in daily chemicals. Specifically, they can reduce the viscosity of daily chemicals, improve the fluidity during product use, and also facilitate reducing the production and filling difficulties of the products. The inventors found that applying glycolipids, especially rhamnolipids, in daily chemicals can achieve good viscosity regulation effects. For example, adding the above viscosity modifier to daily chemicals containing suspended substances (such as body wash, etc.) can reduce the viscosity and improve the suspension stability of the suspended substances, and extend the suspension settling rate of the suspended substances in the system. For example, adding the above viscosity modifier to concentrated laundry detergent can reduce the viscosity, promote the dissolution of the concentrated laundry detergent in water, shorten the dissolution time required, and improve the detergency at the same time. For example, adding the above viscosity modifier to laundry beads can reduce the viscosity, improve the dissolution effect of the water-soluble outer membrane in water, shorten the dissolution time required for the laundry beads in water, and improve the detergency at the same time.

[0043] In the present invention, the glycolipids used are the fourth-generation biosurfactants, which are obtained by treating a biological metabolite produced by bacteria, and have advantages such as high biological safety and low irritation. The viscosity modifier provided by the present invention is a green, biodegradable viscosity modifier with excellent performance.

[0044] Preferably, the glycolipids are selected from one or more of rhamnolipids, sophorolipids, trehalolipids, glyceroglycolipids, mannosylerythritol lipids, cellobiose lipids, and more preferably rhamnolipids. Glycolipids can be obtained through commercial purchase or prepared by well-known preparation processes in the art. Taking rhamnolipids as an example, for example, but not limited to Carfil BIO RL1 of Wanhua Chemical, REWOFERM® RL100 of Evonik Industries, rhamnolipids of Zijin Biology; taking sophorolipids as an example, for example, but not limited to Unicap BIO SL1 of Wanhua Chemical, REWOFERM® SL ONE of Evonik Industries, CARINEX SL A of Sasol Chemicals, etc.

[0045] Preferably, the surfactant with a benzene ring structure is selected from one or more of sodium dodecylbenzenesulfonate and sodium decylbenzenesulfonate.

[0046] Preferably, the alkyl polyglycoside surfactants are selected from one or more of decyl glucoside, coconut glucoside, octyl glucoside, and stearyl glucoside.

[0047] In some embodiments, the viscosity modifier is obtained by compounding component A (i.e., glycolipid and / or salt of glycolipid) with component B (i.e., alkyl glycoside surfactant and / or surfactant with benzene ring structure). The inventors have found that adding this compounded viscosity modifier to daily chemicals can effectively regulate the micelle state, compress the gel range of the surfactant, and while providing a detergency effect, can effectively control the viscosity of the product. For example, it can reduce the viscosity of daily chemicals such as cleaning and washing products, improve the fluidity during product use, and also facilitate reducing the production and filling difficulties of the product. The application of the above viscosity modifier in daily chemicals can effectively overcome the difficulties existing in the prior art, such as the difficult viscosity regulation of daily products, environmental unfriendliness, and complex operation process. For example, adding the above compounded viscosity modifier to daily chemicals containing suspended matter (such as body wash, etc.) can reduce the viscosity and also improve the suspension stability of the suspended matter, prolonging the suspension settling rate of the suspended matter in the system. For example, adding the above viscosity modifier to concentrated laundry detergent can reduce the viscosity, promote the dissolution of the concentrated laundry detergent in water, shorten the dissolution time required, and at the same time improve the detergency ability. For example, adding the above viscosity modifier to laundry beads can reduce the viscosity, improve the dissolution effect of the water-soluble outer membrane in water, shorten the dissolution time required for the laundry beads in water, and at the same time improve the detergency ability.

[0048] In the viscosity modifier composed of component A and component B, it is more preferable that component A is combined with a surfactant having a benzene ring structure to form the viscosity modifier. When the addition amounts of the respective components are at a comparable level, such a preferred viscosity modifier has a more significant viscosity reduction effect compared to the combination of component A and an alkyl polyglycoside surfactant. The present inventors have found that when a glycolipid and / or a salt of a glycolipid is used in combination with a surfactant having a benzene ring structure, the sugar ring in the hydrophilic part of the glycolipid structure can effectively improve the solubility of the surfactant product, and the relatively large volume can also provide a steric hindrance effect. When compounded with a surfactant having a benzene ring structure with a large steric hindrance, the two exert a synergistic interaction, intersperse between the rod-like micelles in the surfactant aqueous solution, making it difficult for the rod-like micelles in the surfactant aqueous solution to aggregate and form a gel, thus further compressing the gel range of the final product; the viscosity modifier of this preferred combination can exert a more excellent viscosity adjustment effect in daily chemicals, can more significantly reduce the product viscosity, and can also make the product dissolve faster in water, improving the user experience of consumers. In the viscosity modifier composed of component A and a surfactant having a benzene ring structure, it is more preferable that component A is one or more of rhamnolipid and its salts. The viscosity modifier of this preferred combination has a further improved viscosity reduction effect. In a more preferred embodiment, the viscosity modifier is composed of component A and sodium dodecylbenzenesulfonate, and component A is one or more of rhamnolipid and its salts; when the viscosity modifier of this preferred combination is applied in daily chemicals, it can exert a more excellent viscosity control effect and can further significantly reduce the product viscosity.

[0049] In some examples, the addition amount of component A in the daily chemical is 0.05 - 30 wt%, preferably 0.1 - 30%, more preferably 0.1 - 25%, and further preferably 0.1 - 16 wt%; and / or, the addition amount of component B in the daily chemical is 0 - 30%, for example 0.05 - 30 wt%, for example 0.05 - 25%, preferably 0.05 - 10 wt%.

[0050] In some examples, when the viscosity modifier only contains component A, the addition amount of component A in the daily chemical product is, for example, 0.05 - 30 wt%, preferably 0.1 - 30 wt%, for example, 0.1 - 25 wt%, more preferably 0.1 - 16 wt%. When the viscosity modifier contains component A and component B, the two can be used in any proportion combination. The addition amount of the viscosity modifier in the daily chemical product is specifically determined according to application requirements, for example, but not limited to, 0.05 - 40 wt%, for example, but not limited to, 0.05 - 30 wt%; the addition amount of component A in the daily chemical product is, for example, 0.05 - 30 wt%, preferably 0.1 - 30 wt%, for example, 0.1 - 25%, more preferably 0.1 - 16 wt%; the addition amount of component B is, for example, 0 - 30 wt%, for example, 0.05 - 30 wt%, 0.05 - 25%, 0.05 - 10 wt%, etc. In some examples, based on the mass of the daily chemical product, the addition amount of component A is, for example, 0.05 wt%, 0.1 wt%, 1 wt%, 3 wt%, 5 wt%, 10 wt%, 15 wt%, 20 wt%, 25 wt%, 30 wt%, etc. In some examples, based on the mass of the daily chemical product, the addition amount of component B is, for example, 0, 0.05 wt%, 0.1 wt%, 1 wt%, 3 wt%, 5 wt%, 10 wt%, 15 wt%, 20 wt%, 25 wt%, 30 wt%, etc. More preferably, the viscosity modifier is composed of component A and a surfactant with a benzene ring structure, and the addition amount of component A in the daily chemical product is 0.1 - 30 wt%, and the addition amount of the surfactant with a benzene ring structure in the daily chemical product is 0.05 - 10 wt%, which can achieve a more excellent viscosity reduction effect.

[0051] In some embodiments, the daily chemical product is added with a suspension. The use of the viscosity modifier provided by the present invention further includes improving the suspension performance of the suspension added in the daily chemical product in the daily chemical product. The suspension is a substance that needs to maintain a suspended state in the daily chemical product, such as petals, pearlescent powder, soft beads, etc. Adding the viscosity modifier of the present invention to the daily chemical product added with a suspension can effectively improve the suspension performance of the suspension, delay the sinking of the suspension, and reduce the sinking rate.

[0052] Furthermore, the use of the viscosity modifier provided by the present invention also includes accelerating the dissolution rate of the daily chemical product in water, enabling the daily chemical product to dissolve better in water. For example, it can accelerate the dissolution rate of concentrated laundry detergent, laundry beads, etc. in water, and avoid problems such as low cleaning efficiency and residue caused by too long dissolution time during the use of such products. By adding the viscosity modifier provided by the present invention, the cleaning efficiency and cleaning effect can be improved.

[0053] In some embodiments, the daily chemical is a fabric detergent. The use of the viscosity improver provided by the present invention also includes improving the detergency of the fabric detergent. For example, compared with a laundry bead or a concentrated laundry detergent without the viscosity improver of the present invention, the product added with the viscosity improver of the present invention has better detergency.

[0054] In some embodiments, the daily chemical includes a water-soluble outer film. The use of the viscosity improver provided by the present invention also includes improving the dissolution performance of the water-soluble outer film in water, and further improving the dissolution performance of the daily chemical with the water-soluble outer film in water. For example, it can improve the dissolution rate of a laundry bead including a water-soluble outer film, and improve the cleaning efficiency and cleaning effect. The water-soluble outer film can be various water-soluble outer film materials commonly used in the art, such as a PVA film. The viscosity improver of the present invention has good compatibility with the water-soluble outer film of the daily chemical, can improve the water solubility of the water-soluble outer film, so that the material wrapped by the water-soluble outer film can better dissolve in water, and improve the cleaning efficiency.

[0055] In the above uses, the viscosity improver provided by the present invention is used to adjust the viscosity of the daily chemical; on this basis, the viscosity improver of the present invention can further play a positive role in one or more of the following uses A)-D):

[0056] A) Used to improve the suspension performance of the suspended matter in the daily chemical added with the suspended matter;

[0057] B) Used to accelerate the dissolution rate of the daily chemical in water;

[0058] C) Used to improve the detergency of the fabric detergent;

[0059] D) Used to improve the dissolution performance of the water-soluble outer film in the daily chemical with the water-soluble outer film in water;

[0060] The above daily chemicals are, for example, shampoo, body wash, hand sanitizer, fabric detergent, etc. The fabric detergent is, for example, laundry liquid, laundry beads, etc.; in the above uses, the viscosity improver is component A and optional component B. Component B is more preferably a surfactant with a benzene ring structure, and component A is more preferably one or more of rhamnolipid and its salts; in some preferred examples, the viscosity improver is one or more of rhamnolipid and its salts used alone; more preferably, the viscosity improver is one or more of rhamnolipid and its salts, compounded with sodium dodecylbenzenesulfonate.

[0061] The following further illustrates the solution of the present invention through examples, but it should not be understood that the present invention is only limited thereto.

[0062] Where specific experimental procedures or conditions are not specified in the examples, the operations or conditions of the corresponding conventional experimental procedures in this technical field can be followed. For reagents or instruments whose manufacturers are not specified, they are all conventional products that can be obtained through commercial purchase.

[0063] Unless otherwise specified, the percentages used in the examples and comparative examples of the present invention are all mass percentages.

[0064] Some raw materials in the examples and comparative examples are described as follows:

[0065] Rhamnolipid: commercially available; specifically, the rhamnolipid used in Examples 1, 4, and 5 is Carfil BIO RL1 (Wanhua Chemical), the rhamnolipid used in Example 2 is REWOFERM® RL100 (Evonik Chemical), and the rhamnolipid used in Example 3 is from Zijin Biology.

[0066] Sophorolipid: commercially available; specifically, the sophorolipid used in Examples 1 and 5 is Unicap BIO SL1 (Wanhua Chemical), the sophorolipid used in Example 2 is REWOFERM® SL ONE (Evonik Chemical), and the sophorolipid used in Example 3 is CARINEX SL A (Sasol Chemical).

[0067] Application of viscosity improver in petal body wash in Example 1a - 1h

[0068] The preparation of the petal body wash in Example 1a specifically includes the following steps

[0069] 1) Add 0.5 kg of cherry petals to 25 kg of deionized water, stir evenly, and then add 3.5 kg of suspending agent and continue to stir until evenly mixed to obtain mixture A;

[0070] 2) Add 25 kg of deionized water to the stirring kettle, heat it to 70 °C, and then sequentially add 10 kg of viscosity improver, 5 kg of moisturizer, 1 kg of shaping agent, 0.2 kg of skin care agent, 1 kg of preservative, and 0.1 kg of essence under stirring until evenly mixed to obtain mixture B;

[0071] 3) Add mixture A to mixture B, stir evenly, and then add a pH regulator to adjust the pH to 6.5 to obtain the petal body wash.

[0072] Among them, the viscosity improver is rhamnolipid, the suspending agent is acrylate copolymer, the humectant is 1,3-butanediol; the forming agent is gellan gum; the skin care agent is violet essential oil; the preservative is a mixture of phenoxyethanol and 1,2-hexanediol, the addition amount of phenoxyethanol is 0.4 kg, and the addition amount of 1,2-hexanediol is 0.6 kg; the essence is a mixture of jasmine essence and lemon essence, the addition amount of jasmine essence is 0.05 kg, and the addition amount of lemon essence is 0.05 kg; the pH regulator is 18 wt% sodium hydroxide aqueous solution.

[0073] Examples 1b - 1h are prepared in the same way as Example 1a, the difference is that the composition of the viscosity improver and the addition amounts of each component in the viscosity improver in the body wash in Examples 1b - 1h are different from those in Example 1a. See Table 1 below for details.

[0074] Perform the following tests on the petal body wash obtained from each of the above examples:

[0075] (1) Viscosity test: Use a viscometer (Brookfield, LV, 21#, 10 rpm) to test the viscosity of each petal body wash sample in each example at 25°C.

[0076] (2) Suspension test: Put the petal body wash samples in each example into 10 ml centrifuge tubes, mark the positions of the petals at the same height, heat store them in an oven at 50°C for 14 days, and observe the descending height of the petals.

[0077] (3) Foam height test: Weigh 5 ml of each petal body wash sample in each example, add it to a juicer, stir for 1 min, then pour the foam into a 500 ml graduated cylinder and observe the foam height.

[0078] (4) Cleaning effect test: Draw 20 lines with an oil-based pen on the inner side of the arm, take 1 ml of the petal body wash and clean the handwriting in a circular motion for 3 min, and observe the clarity of the handwriting.

[0079] (5) Skin feel after washing test: Select 10 male and 10 female volunteers to use each petal body wash sample in each example for testing. Each time, take 5 ml of the sample for use. After use, score the "skin feel after washing" of each sample from dimensions such as tightness, moisturization after washing, and irritation. The full score is 5 points.

[0080] The test results are shown in Table 1.

[0081] Table 1 Petal body wash

[0082]

[0083] According to the experiments in Table 1, compared with Example 1h (without adding glycolipid), all the other examples achieved an obvious effect of reducing viscosity and significantly delayed the descent of the suspended petals. In terms of reducing viscosity, Examples 1c - 1e and Example 1g using a viscosity modifier composed of glycolipid and alkyl glycoside surfactants were inferior to Examples 1a - 1b and Example 1f, while Examples 1b and 1f using a viscosity modifier composed of glycolipid and a surfactant with a benzene ring structure had significantly better viscosity reduction effects compared to other examples. More preferably, Example 1b using a viscosity modifier composed of rhamnolipid and sodium dodecylbenzenesulfonate achieved a more excellent viscosity reduction effect and could more significantly delay the descent of the petals. Compared with Example 1h, the above Examples 1a - 1g not only achieved obvious effects of reducing viscosity and delaying the sinking of the petals, but also took into account good cleaning effects, better skin feel after washing and other properties.

[0084] Application of viscosity modifiers in Examples 2a - 2h in concentrated laundry detergents

[0085] The preparation of the concentrated laundry detergent in Example 2a specifically includes the following steps:

[0086] Dosages of each component: 10 kg of C12 - 15 alkanol polyether sulfate, 5 kg of C12 - 13 alkanol polyether - 3, 5 kg of C12 - 14 olefin sulfonate, 10 kg of lauryl alcohol polyether - 9, 10 kg of viscosity modifier (rhamnolipid in this example), and 25 kg of water.

[0087] 1) Weigh C12 - 15 alkanol polyether sulfate, C12 - 13 alkanol polyether - 3, C12 - 14 olefin sulfonate, lauryl alcohol polyether - 9, and the viscosity modifier according to the formula amounts.

[0088] 2) Add the formula amounts of C12 - 14 olefin sulfonate, C12 - 13 alkanol polyether - 3, C12 - 15 alkanol polyether sulfate, lauryl alcohol polyether - 9, and the viscosity modifier to the formula amount of water and stir evenly.

[0089] The preparation methods of Examples 2b - 2h are the same as that of Example 2a, the difference being that the composition of the viscosity modifier and the addition amounts of each component in the viscosity modifier in concentrated laundry detergents in Examples 2b - 2h are different from those in Example 2a. See Table 2 below for details.

[0090] The concentrated laundry detergents obtained in the above examples were subjected to the following various tests, and the test results are shown in Table 2.

[0091] (1) Viscosity test: Use a viscometer (Brookfield, LV, 21#, 10 rpm) to test the viscosity of each concentrated laundry detergent sample in each example at 25°C.

[0092] (2)Dissolution time test: Weigh 1 g of the concentrated laundry detergent samples in each example into a 100 ml beaker, add 50 ml of deionized water, and observe and record the dissolution time.

[0093] (3)Cleaning effect test: Cut the national standard sebum soiled cloth into 6 cm * 6 cm squares. Add 3 sebum soiled cloths, 2 g of the concentrated laundry detergent in each example, and 1000 ml of deionized water into the test bucket in sequence. After cleaning with a vertical decontamination machine (Yinze Instrument, RHLQ-Ⅱ) for 30 min, rinse 3 times and dry. Use a whiteness meter (Yante Technology, YQ-Z-48B) to measure the whiteness of the sebum soiled cloth before and after cleaning respectively, and calculate the percentage increase in whiteness after cleaning with the concentrated laundry detergent.

[0094] Table 2

[0095]

[0096] Note: In Table 2, "m" in the dissolution time represents minutes and "s" represents seconds. For example, 1m17s represents 1 minute and 17 seconds. The same applies to Tables 3 - 5.

[0097] According to the experiments in Table 2, compared with Example 2h (without adding glycolipid), all the other examples achieved obvious effects of reducing viscosity, significantly shortened the dissolution time of the product, and improved the decontamination performance. In terms of reducing viscosity, the effects of Examples 2c - 2e and Example 2g using a viscosity modifier composed of glycolipid and alkyl polyglycoside surfactants were inferior to those of Examples 2a - 2b and Example 2f, while Examples 2b and 2f using a viscosity modifier composed of glycolipid and a surfactant with a benzene ring structure had significantly better viscosity reduction effects compared with all the other examples. More preferably, Example 2b using a viscosity modifier composed of rhamnolipid and sodium dodecylbenzenesulfonate achieved more excellent viscosity reduction effects.

[0098] Application of viscosity modifiers in laundry beads in Examples 3a - 3h

[0099] The preparation of the laundry beads in Example 3a specifically includes the following steps

[0100] 1) Weigh 3 kg of C8 - 16 alkyl glucoside, 22 kg of fatty alcohol polyoxyethylene ether, 8 kg of sodium lauryl polyether sulfate, 15 kg of lauryl polyether - 9, and 10 kg of viscosity modifier (rhamnolipid in this example) into a reaction vessel in sequence, and stir at a speed of 100 rpm for 30 min until the liquid becomes completely transparent to obtain mixture A;

[0101] 2) In another pot, weigh 39 kg of C10 - isomeric alcohol polyoxyethylene ether, 0.2 kg of chlorhexidine acetate, and 0.3 kg of parachlorometaxylenol. After mixing them evenly, heat to complete transparency at 70 - 80 °C to obtain mixture B;

[0102] 3) Add mixture B to mixture A, and continue to stir at a speed of 100 rpm for 30 min until the mixed solution is completely transparent;

[0103] 4) Add 1 kg of glycerol, 0.1 kg of alkaline protease, and 0.1 kg of cellulase to the mixed solution, and continue to stir at a speed of 100 rpm for 30 min until the mixed solution is completely transparent;

[0104] 5) Add preservatives, fragrance, and pigment to the mixed solution, and continue to stir at a speed of 100 rpm for 30 min until the mixed solution is completely transparent; among them, the preservative is a mixture of phenoxyethanol and 1,2 - hexanediol, the addition amount of phenoxyethanol is 0.1 kg, and the addition amount of 1,2 - hexanediol is 0.1 kg; the fragrance is jasmine fragrance, the addition amount is 0.5 kg; the pigment is sunset yellow, the addition amount is 0.02 kg;

[0105] 6) Filter, discharge, fill, and press the PVA film for the obtained liquid material to obtain laundry beads encapsulated with the liquid material by the PVA film.

[0106] The preparation methods of Example 3b - Example 3h are the same as that of Example 3a, the difference is that the composition of the viscosity modifier and the addition amounts of each component in the viscosity modifier in the laundry beads in Example 3b - Example 3h are different from those in Example 3a. See Table 3 below for details.

[0107] Concentrated laundry detergents obtained from the above - mentioned examples were subjected to the following various tests, and the test results are shown in Table 3.

[0108] (1) Viscosity test: Use a viscometer (Brookfield, LV, 21#, 10 rpm) to test the viscosity of the liquid material samples in each laundry bead in each example at 25 °C.

[0109] (2) Dissolution time test: Take 1 g of the liquid material sample in the laundry bead in each example and put it in a 100 ml beaker, add 50 ml of deionized water, and observe and record the dissolution time.

[0110] (3) Cleaning effect test: Cut the national standard sebum soiled cloth into 6 cm * 6 cm squares. Add 3 sebum soiled cloths, 2 g of the laundry beads in Example 3, and 1000 ml of deionized water into the test bucket in sequence. After cleaning with a vertical decontamination machine (Yinze Instrument, RHLQ-II) for 30 min, rinse 3 times and dry. Use a whiteness meter (Yante Technology, YQ-Z-48B) to measure the whiteness of the sebum soiled cloth before and after cleaning, and calculate the percentage increase in whiteness after cleaning with the concentrated laundry detergent.

[0111] (4) Outer packaging film contact angle test: Cut a 5 cm * 5 cm PVA film, and use a contact angle tester to measure the contact angle of each liquid sample in each example on the PVA film.

[0112] Table 3

[0113]

[0114] According to the experiments in Table 3, compared with Example 3h (without adding glycolipid), all the other examples achieved obvious effects of reducing viscosity, significantly shortened the dissolution time of the product, significantly reduced the contact angle of the outer packaging film, and at the same time improved the decontamination performance. In terms of reducing viscosity, Examples 3c - 3e and Example 3g using a viscosity modifier composed of glycolipid and alkyl polyglycoside surfactants were inferior to Examples 3a - 3b and Example 3f, while Examples 3b and 3f using a viscosity modifier composed of glycolipid and a surfactant with a benzene ring structure had significantly better viscosity reduction effects than all the other examples. More preferably, Example 3b using a viscosity modifier composed of rhamnolipid and sodium dodecylbenzenesulfonate achieved more excellent viscosity reduction effects.

[0115] Application of viscosity modifiers in Examples 4a - 4f in concentrated laundry detergents

[0116] The preparation of the concentrated laundry detergent in Example 4a specifically includes the following steps:

[0117] Dosages of each component: 15 kg of C12 - 15 alkanol polyether sulfate, 10 kg of C12 - 13 alkanol polyether - 3, 10 kg of C12 - 14 olefin sulfonate, 10 kg of lauryl alcohol polyether - 9, 30 kg of viscosity modifier (rhamnolipid in this example), and 25 kg of water.

[0118] 1) Weigh C12 - 15 alkanol polyether sulfate, C12 - 13 alkanol polyether - 3, C12 - 14 olefin sulfonate, lauryl alcohol polyether - 9, and the viscosity modifier according to the formula amounts.

[0119] 2) Add sodium C12-14 olefin sulfonate, C12-13 alcohol polyether-3, sodium C12-15 alcohol polyether sulfate, lauryl alcohol polyether-9, and viscosity modifier in the formula amount to the water in the formula amount, and stir evenly.

[0120] Examples 4b - 4f are prepared in the same manner as Example 4a, except that the composition of the viscosity modifier and the addition amounts of the components in the viscosity modifier in the concentrated laundry detergent in Examples 4b - 4f are different from those in Example 4a. See Table 4 below for details.

[0121] Conduct the following tests on the concentrated laundry detergents obtained in the above examples, and the test results are shown in Table 4.

[0122] (1) Viscosity test: Use a viscometer (Brookfield, LV, 21#, 10rpm) to test the viscosity of each concentrated laundry detergent sample in each example at 25°C.

[0123] (2) Dissolution time test: Weigh 1 g of the concentrated laundry detergent sample in each example and place it in a 100 ml beaker, add 50 ml of deionized water, and observe and record the dissolution time.

[0124] (3) Cleaning effect test: Cut the national standard sebum soiled cloth into 6 cm * 6 cm squares, and sequentially add 3 sebum soiled cloths, 2 g of the concentrated laundry detergent in each example, and 1000 ml of deionized water into the test bucket. After cleaning with a vertical decontamination machine (Yinze Instruments, RHLQ-II) for 30 minutes, rinse 3 times and dry. Use a whiteness meter (Yante Technology, YQ-Z-48B) to test the whiteness of the sebum soiled cloth before and after cleaning, and calculate the percentage increase in whiteness after cleaning with the concentrated laundry detergent.

[0125] Table 4

[0126]

[0127] According to the experiments in Table 4, compared with Example 4f (without adding glycolipid), all the other examples achieved the effect of significantly reducing the viscosity, significantly shortening the dissolution time of the product, and improving the detergency performance. In terms of reducing viscosity, the effect of Example 4e with a viscosity modifier composed of a low glycolipid content and a high alkyl polyglycoside surfactant is inferior to that of Examples 4a - 4d, while Example 4b with a viscosity modifier composed of a high glycolipid content and a surfactant with a benzene ring structure has a significantly better viscosity reduction effect compared to all the other examples.

[0128] Examples 5a - 5h

[0129] The following examples are used to illustrate that the viscosity modifier provided by the present invention can also significantly regulate the viscosity of a system that has undergone gelation.

[0130] Weigh 50 g of AEO-9 in a beaker, add 50 ml of water to prepare a 50% mass concentration AEO-9 solution, stir evenly to obtain an AEO-9 liquid material with a gel phenomenon, and the viscosity is 28950 mPa·s.

[0131] In Example 5a, add 10 g of viscosity modifier (rhamnolipid in this example) to the above AEO-9 liquid material, mix evenly to obtain a sample liquid.

[0132] Examples 5b - 5h have the same preparation method for the sample liquid as in Example 5a. The difference is that the composition of the viscosity modifier and the addition amount of each component in the viscosity modifier in the sample liquid in Examples 5b - 5h are different from those in Example 5a. See Table 5 below for details.

[0133] Perform the following various tests on the sample liquids obtained in the above examples, and the test results are shown in Table 5.

[0134] (1) Viscosity test: Use a viscometer (Brookfield, LV, 64#, 10 rpm) to measure the viscosity of each sample liquid in the above examples at 25°C.

[0135] (2) Dissolution time test: Take 1 g of the sample liquid in each example and place it in a 100 ml beaker, add 50 ml of deionized water, observe and record the dissolution time.

[0136] (3) Cleaning effect test: Cut the national standard sebum soiled cloth into 6 cm * 6 cm squares. Add 3 sebum soiled cloths, 2 g of the sample liquid in each example, and 1000 ml of deionized water to the test bucket in sequence. Use a vertical decontamination machine (Yinze Instruments, RHLQ-II) to clean for 30 min, then rinse 3 times and dry. Use a whiteness meter (Yante Technology, YQ-Z-48B) to measure the whiteness of the sebum soiled cloth before and after cleaning respectively, and calculate the percentage increase in whiteness after cleaning with the sample liquid.

[0137] Table 5

[0138]

[0139] According to the experiments in Table 5, for the surfactant solutions that have already exhibited gelation, compared with Example 5h (without adding glycolipid), all the other examples have achieved the effects of significantly reducing viscosity, significantly shortening the dissolution time of the product, and improving the detergency performance. In terms of reducing viscosity, Examples 5c - 5e and Example 5g using a viscosity modifier composed of glycolipid and alkyl polyglycoside surfactants are inferior to Examples 5a - 5b and Example 5f, while Examples 5b and 5f using a viscosity modifier composed of glycolipid and a surfactant with a benzene ring structure have significantly better viscosity reduction effects than all the other examples. More preferably, Example 5b using a viscosity modifier composed of rhamnolipid and sodium dodecylbenzenesulfonate has achieved even more excellent viscosity reduction effects.

[0140] It is easily understandable that the above examples are merely illustrations for clear explanation and do not mean that the present invention is limited thereto. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A viscosity improver, characterized in that The viscosity improver is composed of component A and component B in any mass ratio, wherein component A is rhamnolipid and component B is a surfactant with a benzene ring structure; The surfactant with a benzene ring structure is selected from one or more of sodium dodecylbenzenesulfonate and sodium decylbenzenesulfonate.

2. The viscosity improver according to claim 1, characterized in that The mass ratio of the component A to the component B is 1000:1 to 1:1000.

3. The viscosity improver according to claim 1, characterized in that The addition amounts of the component A and the component B are independently 0.05-30 parts by mass.

4. Use of the viscosity improver according to any one of claims 1 to 3 in adjusting the viscosity of daily chemicals.

5. The use according to claim 4, characterized in that The daily chemicals include personal care products or household care products; And / or, the addition amount of the component A in the daily chemical product is 0.05-30wt%; And / or, the component B is added in an amount of 0.05-30 wt % in the daily chemical product.

6. The use according to claim 5, characterized in that The daily chemicals are one or more of shampoo, shower gel, hand soap, and fabric detergent.

7. The use according to any one of claims 4 to 6, characterized in that: The daily chemical is added with suspended matter, and the use also includes improving the suspension performance of the suspended matter added to the daily chemical.

8. The use according to any one of claims 4 to 6, characterized in that: The use also includes accelerating the dissolution rate of the daily chemicals in water; And / or, the daily chemical is a fabric cleaning agent, and the use also includes improving the stain removal ability of the fabric cleaning agent.

9. The use according to any one of claims 4 to 6, characterized in that: The daily chemical comprises a water-soluble outer film, and the use also comprises improving the solubility of the daily chemical with the water-soluble outer film in water.

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