Viscosity modifier and use thereof for adjusting viscosity of daily chemicals

Abstract

The invention relates to the field of daily chemicals, and provides a viscosity modifier and application thereof in adjusting the viscosity of daily chemicals. The viscosity modifier provided by the invention can play a role in adjusting viscosity and the like in daily chemicals. The viscosity modifier is composed of a component A and an optional component B, the component A is one or more of glycolipid and salts thereof, and the component B is selected from one or more of an alkyl glycoside surfactant and a surfactant with a benzene ring structure.

Description

Technical Field

[0001] The invention relates to the field of daily chemicals, and in particular to a viscosity improver and application thereof in adjusting the viscosity of daily chemicals. Background Art

[0002] The production technology of daily chemical products is now very mature, but some personal care products will choose to match petals, pearl powder, soft beads and other suspended substances to achieve a beautiful appearance. In order to ensure that the suspended substances do not settle for a long time, the viscosity of the product is usually increased, which will not only greatly reduce the fluidity of the product during use, but also greatly increase the difficulty of filling, resulting in increased costs. In addition, in the field of household care products, concentrated laundry detergents and laundry beads are gradually becoming popular among consumers. However, 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 amount used, but also greatly affects the dissolution rate of the product. For the quick wash mode, it is easy to have residue problems. At the same time, concentrated laundry detergents and laundry beads are also prone to filling difficulties.

[0003] Among the current technologies, one aspect is to use specific solvents to synergistically reduce the viscosity of the surfactant system. However, the solvents used in the formula require the compounding of multiple chemical components, and the operation process is relatively complicated. Moreover, the addition of solvents greatly increases the requirements for surfactants, and the universality is low. At the same time, its components are all derived from petrochemical raw materials and are difficult to degrade. In some other schemes, the synergistic effect of anion and cation compounding is used to control the viscosity of shower gel, but it also has requirements for the type of surfactant, the scope of application is limited, and it can often only control the viscosity of the product at the source, and has no clear effect on products that have already produced gelation. Summary of the invention

[0004] The present invention provides a viscosity improver and its use in adjusting the viscosity of daily chemicals. The viscosity improver provided by the present invention can play a role in adjusting the viscosity of daily chemicals.

[0005] To achieve the purpose, the present invention provides the following technical solutions: On one hand, the present invention provides a viscosity improver, which consists of component A and optional 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.

[0006] Preferably, the glycolipid is selected from one or more of rhamnolipid, sophorolipid, algal lipid, glyceroglycolipid, mannosylerythritol lipid, cellobiose lipid, more preferably rhamnolipid.

[0007] Preferably, the surfactant with a benzene ring structure is selected from one or more of sodium dodecylbenzenesulfonate and sodium decylbenzenesulfonate; And / or, the alkyl glycoside surfactant is selected from one or more of decyl glucoside, coconut glucoside, octyl glucoside and stearyl glucoside.

[0008] In some embodiments, the viscosity modifier is the component A, preferably one or more of rhamnolipids and their salts; Alternatively, the viscosity improver consists of the component A and the alkyl glycoside surfactant; Alternatively, the viscosity improver 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 dodecylbenzene sulfonate.

[0009] In some embodiments, the viscosity modifier is composed of component A and component B in any mass ratio; for example, the mass ratio of component A to component B is 1000:1 to 1:1000; for example, the addition amount of component A and component B is independently 0.05-30 parts by mass, preferably 0.1-10 parts by mass.

[0010] The present invention also provides use of the viscosity improver described above in adjusting the viscosity of daily chemicals.

[0011] Furthermore, the daily chemicals include personal care products or household care products, preferably cleaning and washing products; Preferably, 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; Preferably, the addition amount of component A in the daily chemical product is 0.05-30 wt %, preferably 0.1-30 wt %, preferably 0.1-25 wt %, more preferably 0.1-16 wt %; Preferably, the component B is added in an amount of 0-30% in the daily chemical product, such as 0.05-30wt%, such as 0.05-25%, preferably 0.05-10wt%.

[0012] In some embodiments, the daily chemical is added with suspended matter, and the use further includes improving the suspension performance of the suspended matter added to the daily chemical.

[0013] Furthermore, 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.

[0014] In some embodiments, the daily chemical comprises a water-soluble outer film, and the use further comprises improving the solubility of the daily chemical with the water-soluble outer film in water.

[0015] The technical solution provided by the present invention has the following beneficial effects: The present invention uses component A (glycolipid and / or glycolipid salt) as a viscosity modifier, or uses component A and component B to form a viscosity modifier. The viscosity modifier can play a role in viscosity regulation in daily chemicals, can reduce viscosity, improve product fluidity, and help reduce the difficulty of the production and filling process of daily chemicals. DETAILED DESCRIPTION

[0016] In order to facilitate the understanding of the present invention, the present invention will be further described below in conjunction with examples. It should be understood that the following examples are only for a better understanding of the present invention and do not mean that the present invention is limited to the following examples.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the invention belongs. The term "and / or" as may be used herein includes any and all combinations of one or more of the associated listed items.

[0018] On one hand, the present invention provides a viscosity improver, which consists of component A and optional 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.

[0019] In the present invention, component A can be one or more of glycolipids and glycolipid salts, wherein the glycolipid salts are, for example but not limited to, one or more of glycolipid potassium salts, sodium salts, lithium salts, etc., preferably glycolipid sodium salts.

[0020] The present invention uses glycolipids and / or glycolipid salts as viscosity improvers, or uses glycolipids and / or glycolipid salts (i.e., component A) and component B to form a viscosity improver. The viscosity improver can play a role in viscosity regulation in daily chemicals, can reduce viscosity, improve product fluidity, and help reduce the difficulty of the production and filling process of daily chemicals.

[0021] Preferably, the glycolipid is selected from one or more of rhamnolipid, sophorolipid, algal lipid, glyceroglycolipid, mannosylerythritol lipid, cellobiose lipid, more preferably rhamnolipid.

[0022] Preferably, the surfactant with a benzene ring structure is selected from one or more of sodium dodecylbenzenesulfonate and sodium decylbenzenesulfonate.

[0023] Preferably, the alkyl glycoside surfactant is selected from one or more of decyl glucoside, coconut glucoside, octyl glucoside and stearyl glucoside.

[0024] In a preferred embodiment, the viscosity modifier is component A, that is, the viscosity modifier is one or more glycolipids and their salts, more preferably, the viscosity modifier is one or more rhamnolipids and their salts.

[0025] In a preferred embodiment, the viscosity improver consists of component A and an alkyl glycoside surfactant, and preferably, component A is one or more of rhamnolipids and their salts.

[0026] In a more preferred embodiment, the viscosity improver is composed of component A and a surfactant with a benzene ring structure. The inventors have found that component A (i.e., glycolipid and / or glycolipid salt) and a surfactant with a benzene ring structure are compounded, and the two can play a synergistic role, so that the gel range of daily chemicals can be further compressed, the viscosity of the product can be more significantly reduced, and the dissolution in water can be promoted, thereby improving the consumer's use experience. More preferably, the component A is one or more of rhamnolipid and its salt.

[0027] In a further preferred embodiment, the viscosity improver consists 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 dodecylbenzene sulfonate.

[0028] In one embodiment, the viscosity modifier consists of component A and component B. For example, the addition amount of component A and component B is independently 0.05-30 parts by mass, preferably 0.1-10 parts by mass. 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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 a large number of studies that glycolipid surfactants, especially preferred rhamnolipids, can be used in daily chemicals to effectively adjust the viscosity. Specifically, it can reduce the viscosity of daily chemicals, improve the fluidity of the product when used, and also help to reduce the production and filling difficulty of the product. The inventors found that the application of glycolipids, especially rhamnolipids in daily chemicals can play a good viscosity adjustment effect. For example, adding the above-mentioned viscosity modifier to daily chemicals (such as shower gel, etc.) with suspended matter can reduce viscosity, improve the suspension stability of suspended matter, and prolong the suspension sinking rate of suspended matter in the system. For example, adding the above-mentioned viscosity modifier to concentrated laundry detergent can reduce viscosity, promote the dissolution of concentrated laundry detergent in water, shorten the time required for dissolution, and improve the decontamination ability. For example, adding the above viscosity improver to laundry beads can reduce the viscosity and improve the dissolution effect of the water-soluble outer film in water, shorten the time required for the laundry beads to dissolve in water, and at the same time enhance the dirt removal ability.

[0033] In the present invention, the glycolipid used is a fourth-generation biosurfactant, which is obtained by processing a biological metabolite produced by bacteria and has the advantages of high biological safety and low irritation. The viscosity improver provided by the present invention is a green, degradable viscosity improver with excellent performance.

[0034] Preferably, the glycolipid is selected from one or more of rhamnolipid, sophorolipid, algae lipid, glyceroglycolipid, mannosylerythritol lipid, cellobiose lipid, more preferably rhamnolipid. Glycolipids can be obtained commercially or prepared by a preparation process well known in the art. Taking rhamnolipid as an example, for example, but not limited to Carfil BIO RL1 of Wanhua Chemical, REWOFERM®RL100 of Evonik Chemical, and rhamnolipid of Zijin Biological; taking sophorolipid as an example, for example, but not limited to Unicap BIO SL1 of Wanhua Chemical, REWOFERM®SL ONE of Evonik Chemical, CARINEX SL A of Sasol Chemical, etc.

[0035] Preferably, the surfactant with a benzene ring structure is selected from one or more of sodium dodecylbenzenesulfonate and sodium decylbenzenesulfonate.

[0036] Preferably, the alkyl glycoside surfactant is selected from one or more of decyl glucoside, coconut glucoside, octyl glucoside and stearyl glucoside.

[0037] In some embodiments, the viscosity modifier is obtained by compounding component A (i.e., glycolipid and / or glycolipid salt) with component B (i.e., alkyl glycoside surfactant and / or surfactant with benzene ring structure). The inventors have found that adding the compounded viscosity modifier to daily chemicals can effectively regulate the micelle state, compress the gel range of the surfactant, and effectively control the viscosity of the product while providing a decontamination effect. For example, the viscosity of daily chemicals for cleaning and washing can be reduced, the fluidity of the product can be improved during use, and it is also beneficial to reduce the difficulty of production and filling of the product. The application of the above-mentioned viscosity modifier in daily chemicals can effectively overcome the difficulties in the prior art such as the difficulty in regulating the viscosity of daily products, the non-environmental protection, and the complicated operation process. For example, adding the above-mentioned compounded viscosity modifier to daily chemicals with suspended matter (such as shower gel, etc.) can reduce the viscosity, improve the suspension stability of the suspended matter, and prolong the suspension sinking rate of the suspended matter in the system. For example, adding the above-mentioned viscosity modifier to concentrated laundry detergent can reduce the viscosity, promote the dissolution of concentrated laundry detergent in water, shorten the time required for dissolution, and improve the decontamination ability. For example, adding the above viscosity improver to laundry beads can reduce the viscosity and improve the dissolution effect of the water-soluble outer film in water, shorten the time required for the laundry beads to dissolve in water, and at the same time enhance the dirt removal ability.

[0038] In the viscosity modifier composed of component A and component B, it is more preferred that component A and a surfactant with a benzene ring structure are combined to form a viscosity modifier. When the addition amount of each component is at a comparable level, this type of preferred viscosity modifier has a more significant viscosity reduction effect than the combination of component A and an alkyl glycoside surfactant. The inventors found that glycolipids and / or glycolipid salts are used in combination with surfactants with benzene ring structures. The sugar rings of the hydrophilic part of the glycolipid structure can effectively improve the solubility of the surfactant product, and the larger volume can also provide steric hindrance, and the surfactant with a benzene ring structure with a larger steric hindrance is compounded. The two play a synergistic interaction, interspersed between the rod-shaped micelles in the surfactant aqueous solution, making it difficult for the rod-shaped micelles in the surfactant aqueous solution to aggregate and unable to form a gel, so that the gel interval of the final product is further compressed; the viscosity modifier of the preferred combination can play a more excellent viscosity adjustment effect in daily chemicals, can more significantly reduce the viscosity of the product, and can make the product dissolve faster in water, which can improve the consumer's use experience. In the viscosity modifier composed of component A and a surfactant with a benzene ring structure, it is more preferred that component A is one or more of rhamnolipids and their salts, and 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 dodecylbenzene sulfonate, and component A is one or more of rhamnolipids and their salts; the use of the viscosity modifier of this preferred combination in daily chemicals can exert a more excellent viscosity control effect and can further reduce the viscosity of the product more significantly.

[0039] In some examples, the amount of component A added to the daily chemical is 0.05-30wt%, preferably 0.1-30%, more preferably 0.1-25%, and further preferably 0.1-16wt%; and / or, the amount of component B added to the daily chemical is 0-30%, for example 0.05-30wt%, for example 0.05-25%, and preferably 0.05-10wt%.

[0040] In some examples, when the viscosity improver contains only component A, the amount of component A added to the daily chemicals is, for example, 0.05-30wt%, preferably 0.1-30wt%, such as 0.1-25 wt%, and more preferably 0.1-16wt%. When the viscosity improver contains component A and component B, the two can be used in combination in any proportion, and the amount of viscosity improver added to the daily chemicals is specifically determined according to application requirements, such as but not limited to 0.05-40wt%, such as but not limited to 0.05-30wt%; the amount of component A added to the daily chemicals is, for example, 0.05-30wt%, preferably 0.1-30 wt%, such as 0.1-25%, and more preferably 0.1-16wt%; the amount of component B added is, for example, 0-30wt%, such as 0.05-30wt%, 0.05-25%, 0.05-10wt%, etc. In some examples, based on the mass of daily chemicals, the addition amount of component A is, for example, 0.05wt%, 0.1wt%, 1wt%, 3wt%, 5wt%, 10wt%, 15wt%, 20wt%, 25wt%, 30wt%, etc. In some examples, based on the mass of daily chemicals, the addition amount of component B is, for example, 0, 0.05wt%, 0.1wt%, 1wt%, 3wt%, 5wt%, 10wt%, 15wt%, 20wt%, 25wt%, 30wt%, etc. More preferably, the viscosity improver is a combination of component A and a surfactant with a benzene ring structure, and the addition amount of component A in daily chemicals is 0.1-30wt%, and the addition amount of the surfactant with a benzene ring structure in daily chemicals is 0.05-10wt%, which can exert a better viscosity reduction effect.

[0041] In some embodiments, the daily chemicals are added with suspended matter, and the use of the viscosity improver provided by the present invention further includes improving the suspension performance of the suspended matter added to the daily chemicals in the daily chemicals. Suspended matter is a substance that needs to be kept suspended in the daily chemicals, such as flower petals, pearl powder, soft beads, etc. Adding the viscosity improver of the present invention to the daily chemicals added with suspended matter can effectively improve the suspension performance of the suspended matter, delay the sinking of the suspended matter, and reduce the sinking rate.

[0042] Furthermore, the use of the viscosity improver provided by the present invention also includes accelerating the dissolution rate of the daily chemicals in water so that the daily chemicals can be better dissolved in water. For example, the dissolution rate of concentrated laundry detergent, laundry beads, etc. in water can be accelerated to avoid such products taking too long to dissolve during use, resulting in low cleaning efficiency, residues, and other problems. By adding the viscosity improver provided by the present invention, the cleaning efficiency and cleaning effect can be improved.

[0043] In some embodiments, the daily chemical is a fabric detergent, and the use of the viscosity improver provided by the present invention also includes improving the detergency of the fabric detergent. For example, compared with laundry beads or concentrated laundry liquid to which the viscosity improver of the present invention is not added, the product to which the viscosity improver of the present invention is added has better detergency.

[0044] In some embodiments, the daily chemical products include a water-soluble outer film, and the use of the viscosity improver provided by the present invention also includes improving the solubility of the water-soluble outer film in water, thereby improving the solubility of the daily chemical products with the water-soluble outer film in water. For example, the dissolution rate of laundry beads including a water-soluble outer film can be improved, and the cleaning efficiency and cleaning effect can be improved. The water-soluble outer film can be various water-soluble outer film materials conventionally used in the art, such as PVA film, etc. The viscosity improver of the present invention has good compatibility with the water-soluble outer film of daily chemical products, and can improve the water solubility of the water-soluble outer film, so that the material wrapped by the water-soluble outer film can be better dissolved in water, thereby improving the cleaning efficiency.

[0045] In the above-mentioned uses, the viscosity improver provided by the present invention is used to adjust the viscosity of daily chemicals; on this basis, the viscosity improver of the present invention can further play an active role in one or more of the following uses A)-D): A) To improve the suspension performance of suspended matter in daily chemicals containing suspended matter; B) Used to accelerate the dissolution rate of daily chemicals in water; C) Used to improve the stain removal ability of fabric cleaning agents; D) for improving the solubility of the water-soluble outer film in water in daily chemicals having a water-soluble outer film; The above-mentioned daily chemical products are, for example, shampoo, shower gel, hand soap, fabric detergent, etc., and the fabric detergent is, for example, laundry detergent, laundry beads, etc.; in the above-mentioned 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 rhamnolipids and their salts; in some preferred examples, the viscosity improver is one or more of rhamnolipids and their salts used alone; more preferably, the viscosity improver is one or more of rhamnolipids and their salts, compounded with sodium dodecylbenzene sulfonate.

[0046] The present invention is further described below by way of examples, but it should not be understood that the present invention is limited thereto.

[0047] Where specific experimental steps or conditions are not specified in the examples, the corresponding conventional experimental steps or conditions in the art can be used. The reagents or instruments used without specifying the manufacturer are all conventional products that can be purchased commercially.

[0048] Unless otherwise specified, the percentages used in the examples and comparative examples of the present invention are all percentages by mass.

[0049] Some of the raw materials in the embodiments and comparative examples are described as follows: Rhamnolipid: commercially available; specifically, the rhamnolipid used in Examples 1, 4, and 5 was Carfil BIO RL1 (Wanhua Chemical), the rhamnolipid used in Example 2 was REWOFERM® RL100 (Evonik Chemical), and the rhamnolipid used in Example 3 was from Zijin Biotechnology.

[0050] Sophorolipids: commercially available; specifically, the sophorolipids used in Examples 1 and 5 are Unicap BIO SL1 (Wanhua Chemical), the sophorolipids used in Example 2 are REWOFERM® SL ONE (Evonik Chemical), and the sophorolipids used in Example 3 are CARINEX SL A (Sasol Chemical).

[0051] Examples 1a-1h Application of viscosity improver in flower petal shower gel The preparation of the petal shower gel of Example 1a specifically comprises the following steps: 1) Add 0.5 kg of cherry petals to 25 kg of deionized water and stir evenly, then add 3.5 kg of suspending agent and continue stirring until evenly mixed to obtain mixture A; 2) Add 25 kg of deionized water into a stirring kettle and heat it to 70° C. Then, 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 flavor in sequence under stirring, and stir evenly to obtain a mixture B; 3) Add mixture A to mixture B, stir evenly, and then add a pH adjuster to adjust the pH to 6.5 to obtain flower petal shower gel.

[0052] Among them, the viscosity improver is rhamnolipid, the suspending agent is acrylic acid (ester) 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 added amount of phenoxyethanol is 0.4kg, and the added amount of 1,2-hexanediol is 0.6kg; the flavor is a mixture of jasmine flavor and lemon flavor, the added amount of jasmine flavor is 0.05kg, and the added amount of lemon flavor is 0.05kg; the pH adjuster is 18wt% sodium hydroxide aqueous solution.

[0053] The preparation methods of Examples 1b to 1h are the same as those of Example 1a, except that the composition of the viscosity modifier and the amount of each component of the viscosity modifier added to the shower gel in Examples 1b to 1h are different from those in Example 1a. See Table 1 below for details.

[0054] The petal shower gel obtained in the above embodiments was subjected to the following tests: (1) Viscosity test: The viscosity of each flower petal shower gel sample in each embodiment was tested at 25° C. using a viscometer (Brookfield, LV, 21#, 10 rpm).

[0055] (2) Suspension test: The flower petal shower gel samples in each embodiment were placed in a 10 ml centrifuge tube, the positions of the flower petals at the same height were marked, and the tubes were placed in a 50° C. oven for 14 days to observe the height at which the flower petals dropped.

[0056] (3) Foam height test: Weigh 5 ml of the flower petal shower gel sample in each example, add it to a juicer, stir for 1 min, pour the foam into a 500 ml measuring cylinder, and observe the foam height.

[0057] (4) Cleaning effect test: Use an oil-based pen to draw 20 lines on the inside of the arm. Take 1 ml of petal shower gel and use circular motions to clean the marks for 3 minutes. Observe the clarity of the marks.

[0058] (5) Skin feel test after washing: 10 male and 10 female volunteers were selected to use the petal shower gel samples in each embodiment for testing. 5 ml of sample was taken each time. After use, the "skin feel after washing" of each sample was scored from the dimensions of tightness, moisturizing after washing, irritation, etc., with a full score of 5 points.

[0059] The test results are shown in Table 1.

[0060] Table 1 Petal Shower Gel

[0061] According to the experiment in Table 1, compared with Example 1h (without adding glycolipid), the other embodiments have achieved a significant effect of reducing viscosity and significantly delayed the descent of suspended petals. In terms of reducing viscosity, the effects of Example 1c-1e and Example 1g using a viscosity modifier composed of glycolipid and alkyl glycoside surfactant are inferior to those of Example 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 have a significantly better viscosity reduction effect than the other embodiments. More preferably, Example 1b using a viscosity modifier composed of rhamnolipid and sodium dodecylbenzene sulfonate has achieved a more excellent viscosity reduction effect and can more significantly delay the descent of petals. Compared with Example 1h, the above Examples 1a-1g not only achieve a significant viscosity reduction effect and a petal sinking delay effect, but also take into account good cleaning effect, better skin feel after washing and other properties.

[0062] Examples 2a-2h Application of viscosity improver in concentrated laundry detergent The preparation of the concentrated laundry detergent of Example 2a specifically comprises the following steps: The amount of each component used: 10kg of C12-15 sodium polyether sulfate, 5kg of C12-13 polyether-3, 5kg of C12-14 sodium olefin sulfonate, 10kg of laureth-9, 10kg of viscosity improver (rhamnolipid in this embodiment), and 25kg of water.

[0063] 1) Weigh C12-15 sodium alkyl polyether sulfate, C12-13 paraether-3, C12-14 sodium olefin sulfonate, laureth-9 and viscosity improver according to the formula amount.

[0064] 2) Add the formulated amount of C12-14 sodium olefin sulfonate, C12-13 paraffin polyether-3, C12-15 paraffin polyether sodium sulfate, laureth-9 and viscosity improver into the formulated amount of water and stir evenly.

[0065] The preparation methods of Examples 2b to 2h are the same as those of Example 2a, except that the composition of the viscosity modifiers in Examples 2b to 2h and the amount of each component in the viscosity modifier added to the concentrated laundry detergent are different from those in Example 2a. See Table 2 below for details.

[0066] The concentrated laundry detergents obtained in the above embodiments were subjected to the following tests, and the test results are shown in Table 2.

[0067] (1) Viscosity test: The viscosity of each concentrated laundry detergent sample in each embodiment was tested at 25° C. using a viscometer (Brookfield, LV, 21#, 10 rpm).

[0068] (2) Dissolution time test: Weigh 1 g of the concentrated laundry detergent sample in each example into a 100 ml beaker, add 50 ml of deionized water, and observe and record the dissolution time. (3) Cleaning effect test: Cut the national standard sebum-stained cloth into 6cm*6cm squares, add 3 sebum-stained cloths, 2g of concentrated laundry detergent in each embodiment, and 1000ml of deionized water in the test bucket in sequence. Use a vertical detergent (Yinze Instrument, RHLQ-Ⅱ) to clean for 30 minutes, rinse 3 times, and dry. Use a whiteness meter (Yante Technology, YQ-Z-48B) to test the whiteness of the sebum-stained cloth before and after cleaning, and calculate the percentage of whiteness improvement after cleaning with concentrated laundry detergent.

[0069] Table 2

[0070] Note: In Table 2, "m" in the dissolution time is minutes and "s" is seconds, for example, 1m17s means 1 minute and 17 seconds. The same applies to Tables 3-5.

[0071] According to the experiment in Table 2, compared with Example 2h (without adding glycolipid), the other examples all achieved a significant effect of reducing viscosity, and significantly shortened the dissolution time of the product, and improved the detergency performance. In terms of reducing viscosity, the effects of Example 2c-2e and Example 2g using a viscosity modifier composed of glycolipid and alkyl glycoside surfactant are inferior to those of Example 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 have a significantly better viscosity reducing effect than the other examples. More preferably, Example 2b using a viscosity modifier composed of rhamnolipid and sodium dodecylbenzene sulfonate achieved a more excellent viscosity reducing effect.

[0072] Examples 3a-3h Use of viscosity improvers in laundry detergent beads The preparation of the laundry beads of Example 3a specifically includes the following steps: 1) 3 kg of C8-16 alkyl glucoside, 22 kg of fatty alcohol polyoxyethylene ether, 8 kg of sodium laureth sulfate, 15 kg of laureth-9, and 10 kg of a viscosity improver (rhamnolipid in this embodiment) were weighed in sequence and added into a reaction container, and stirred at a speed of 100 rpm for 30 min until the liquid became completely transparent to obtain a mixture A; 2) In another pot, weigh 39 kg of C10-isomeric alcohol polyoxyethylene ether, 0.2 kg of chlorhexidine acetate, and 0.3 kg of para-chloro-meta-xylenol, mix them evenly, and heat at 70-80°C until completely transparent to obtain mixture B; 3) Add mixture B into mixture A and continue stirring at 100 rpm for 30 min until the mixed solution is completely transparent; 4) Add 1 kg of glycerol, 0.1 kg of alkaline protease and 0.1 kg of cellulase into the mixed solution, and continue stirring at 100 rpm for 30 min until the mixed solution becomes completely transparent; 5) Add preservatives, flavors and pigments to the mixed solution, and continue stirring at a speed of 100 rpm for 30 minutes until the mixed solution is completely transparent; wherein 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 flavor is jasmine flavor, the addition amount is 0.5 kg; the pigment is sunset yellow, the addition amount is 0.02 kg; 6) The obtained liquid is filtered, discharged, filled and pressed with a PVA film to obtain laundry beads in which the liquid is encapsulated by the PVA film.

[0073] The preparation methods of Examples 3b to 3h are the same as those of Example 3a, except that the composition of the viscosity improver and the amount of each component of the viscosity improver added to the laundry beads in Examples 3b to 3h are different from those in Example 3a. See Table 3 below for details.

[0074] The concentrated laundry detergents obtained in the above embodiments were subjected to the following tests, and the test results are shown in Table 3.

[0075] (1) Viscosity test: The viscosity of each laundry detergent bead liquid sample in each embodiment was tested at 25° C. using a viscometer (Brookfield, LV, 21#, 10 rpm).

[0076] (2) Dissolution time test: 1 g of the sample of the laundry beads in each example was placed in a 100 ml beaker, 50 ml of deionized water was added, and the dissolution time was observed and recorded.

[0077] (3) Cleaning effect test: Cut the national standard sebum-stained cloth into 6cm*6cm squares, and add 3 sebum-stained cloths, 2g of the laundry beads in Example 3, and 1000ml of deionized water in the test bucket. Use a vertical detergent (Yinze Instrument, RHLQ-Ⅱ) to clean for 30 minutes, rinse 3 times, and dry. Use a whiteness meter (Yante Technology, YQ-Z-48B) to test the whiteness of the sebum-stained cloth before and after cleaning, and calculate the percentage of whiteness improvement after cleaning with concentrated laundry detergent.

[0078] (4) Contact angle test of outer film: Cut a 5 cm*5 cm PVA film and use a contact angle tester to test the contact angle of each liquid sample in each embodiment on the PVA film.

[0079] Table 3

[0080] According to the experiment in Table 3, compared with Example 3h (without adding glycolipid), the other examples all achieved a significant effect of reducing viscosity, and significantly shortened the dissolution time of the product, significantly reduced the contact angle of the outer membrane, and improved the detergency performance. In terms of reducing viscosity, the effects of Examples 3c-3e and 3g using a viscosity modifier composed of glycolipid and alkyl glycoside surfactants are inferior to those of Examples 3a-3b and 3f, while Examples 3b and 3f using a viscosity modifier composed of glycolipid and a surfactant with a benzene ring structure have a significantly better viscosity reducing effect than the other examples. More preferably, Example 3b using a viscosity modifier composed of rhamnolipid and sodium dodecylbenzene sulfonate achieved a more excellent viscosity reducing effect.

[0081] Examples 4a-4f Application of viscosity improver in concentrated laundry detergent The preparation of the concentrated laundry detergent of Example 4a specifically comprises the following steps: The amount of each component used: 15kg of C12-15 sodium polyether sulfate, 10kg of C12-13 polyether-3, 10kg of C12-14 sodium olefin sulfonate, 10kg of laureth-9, 30kg of viscosity improver (rhamnolipid in this embodiment), and 25kg of water.

[0082] 1) Weigh C12-15 sodium alkyl polyether sulfate, C12-13 paraether-3, C12-14 sodium olefin sulfonate, laureth-9 and viscosity improver according to the formula amount.

[0083] 2) Add the formulated amount of C12-14 sodium olefin sulfonate, C12-13 paraffin polyether-3, C12-15 paraffin polyether sodium sulfate, laureth-9 and viscosity improver into the formulated amount of water and stir evenly.

[0084] The preparation methods of Examples 4b to 4f are the same as those of Example 4a, except that the composition of the viscosity modifiers in Examples 4b to 4f and the amount of each component in the viscosity modifier added to the concentrated laundry detergent are different from those in Example 4a. See Table 4 below for details.

[0085] The concentrated laundry detergents obtained in the above embodiments were subjected to the following tests, and the test results are shown in Table 4.

[0086] (1) Viscosity test: The viscosity of each concentrated laundry detergent sample in each embodiment was tested at 25° C. using a viscometer (Brookfield, LV, 21#, 10 rpm).

[0087] (2) Dissolution time test: Weigh 1 g of the concentrated laundry detergent sample in each example into a 100 ml beaker, add 50 ml of deionized water, and observe and record the dissolution time. (3) Cleaning effect test: Cut the national standard sebum-stained cloth into 6cm*6cm squares, add 3 sebum-stained cloths, 2g of concentrated laundry detergent in each embodiment, and 1000ml of deionized water in the test bucket in sequence. Use a vertical detergent (Yinze Instrument, RHLQ-Ⅱ) to clean for 30 minutes, rinse 3 times, and dry. Use a whiteness meter (Yante Technology, YQ-Z-48B) to test the whiteness of the sebum-stained cloth before and after cleaning, and calculate the percentage of whiteness improvement after cleaning with concentrated laundry detergent.

[0088] Table 4

[0089] According to the experiment in Table 4, compared with Example 4f (without adding glycolipid), the other examples all achieved a significant effect of reducing viscosity, and significantly shortened the dissolution time of the product, and improved the detergency. In terms of reducing viscosity, the effect of Example 4e using a viscosity improver composed of a low glycolipid content and a high alkyl glycoside surfactant was inferior to that of Examples 4a-4d, while Example 4b using a viscosity improver composed of a high glycolipid content and a surfactant with a benzene ring structure had a significantly better viscosity reducing effect than the other examples.

[0090] Examples 5a-5h The following examples are used to illustrate that the viscosity modifier provided by the present invention can also play a significant role in regulating the viscosity of a system that has already undergone gelation.

[0091] Weigh 50g of AEO-9 in a beaker, add 50ml of water to prepare an AEO-9 solution with a mass concentration of 50%, stir evenly, and obtain an AEO-9 liquid with a gel phenomenon and a viscosity of 28950 mPa.s.

[0092] In Example 5a, 10 g of a viscosity improver (rhamnolipid in this example) was added to the above-mentioned AEO-9 liquid and mixed evenly to obtain a sample liquid.

[0093] The preparation methods of the sample solutions in Examples 5b-5h are the same as those in Example 5a, except that the composition of the viscosity modifiers and the amount of each component in the viscosity modifier added to the sample solution in Examples 5b-5h are different from those in Example 5a. See Table 5 below for details.

[0094] The sample solutions obtained in the above examples were subjected to the following tests, and the test results are shown in Table 5.

[0095] (1) Viscosity test: The viscosity of each sample liquid in each example was tested at 25° C. using a viscometer (Brookfield, LV, 64#, 10 rpm).

[0096] (2) Dissolution time test: 1 g of the sample solution in each example was placed in a 100 ml beaker, 50 ml of deionized water was added, and the dissolution time was observed and recorded.

[0097] (3) Cleaning effect test: Cut the national standard sebum-stained cloth into 6cm*6cm squares, and add 3 sebum-stained cloths, 2g of the sample solution in each embodiment, and 1000ml of deionized water in the test bucket in sequence. Use a vertical decontamination machine (Yinze Instrument, RHLQ-Ⅱ) to clean for 30 minutes, rinse 3 times, and dry. Use a whiteness meter (Yante Technology, YQ-Z-48B) to test the whiteness of the sebum-stained cloth before and after cleaning, and calculate the percentage increase in whiteness after cleaning with the sample solution.

[0098] Table 5

[0099] According to the experiment in Table 5, for the surfactant solution that has produced gelation, compared with Example 5h (without adding glycolipid), the other examples have achieved a significant effect of reducing viscosity, and significantly shortened the dissolution time of the product, while also improving the detergency performance. In terms of reducing viscosity, the effects of Examples 5c-5e and 5g using a viscosity modifier composed of glycolipid and alkyl glycoside surfactant are inferior to those of Examples 5a-5b and 5f, while Examples 5b and 5f using a viscosity modifier composed of glycolipid and a surfactant with a benzene ring structure have a significantly better viscosity reducing effect than the other examples. More preferably, Example 5b using a viscosity modifier composed of rhamnolipid and sodium dodecylbenzene sulfonate achieves a more excellent viscosity reducing effect.

[0100] It is easy to understand that the above embodiments are only examples for clear explanation and do not mean that the present invention is limited thereto. For ordinary technicians in the relevant field, 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 from this are still within the protection scope of the present invention.

Claims

1. A viscosity improver, characterized in that The viscosity improver consists of component A and optional 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.

2. The viscosity improver according to claim 1, characterized in that The glycolipid is selected from one or more of rhamnolipid, sophorolipid, algal lipid, glyceroglycolipid, mannosylerythritol lipid and cellobiose lipid.

3. The viscosity improver according to claim 1 or 2, characterized in that The surfactant with a benzene ring structure is selected from one or more of sodium dodecylbenzenesulfonate and sodium decylbenzenesulfonate; And / or, the alkyl glycoside surfactant is selected from one or more of decyl glucoside, coconut glucoside, octyl glucoside and stearyl glucoside.

4. The viscosity improver according to claim 1 or 2, characterized in that The viscosity improver is the component A; Alternatively, the viscosity improver consists of the component A and the alkyl glycoside surfactant; Alternatively, the viscosity improver consists of the component A and the surfactant having a benzene ring structure.

5. The viscosity improver according to claim 1 or 2, characterized in that The viscosity improver is composed of component A and component B in any mass ratio; Alternatively, the mass ratio of the component A to the component B is 1000:1 to 1:1000; Alternatively, the addition amounts of the component A and the component B are independently 0.05-30 parts by mass.

6. Use of the viscosity improver according to any one of claims 1 to 5 in adjusting the viscosity of daily chemicals.

7. The use according to claim 6, characterized in that The daily chemicals include personal care products or household care products; And / or, the daily chemicals are one or more of shampoo, shower gel, hand soap, and fabric detergent; And / or, the addition amount of the component A in the daily chemical product is 0.05-30wt%; And / or, the addition amount of the component B in the daily chemical is 0-30%.

8. The use according to any one of claims 6 to 7, 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.

9. The use according to any one of claims 6 to 7, 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.

10. The use according to any one of claims 6 to 7, 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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